Miscellaneous Papers (59 entries)


A Finite Element Model For Pre And PostTest Calculations of the FOREVERExperiments


H. G. Willschuetz, E. Altstadt, F. P. Weiss, B. R. Sehgal


"An axissymmetric Finite Element (FE) model is developed based on the multipurpose code ANSYS/Multiphysics. Using the Computational Fluid Dynamics (CFD) module the temperature field within the melt pool and within the vessel wall is evaluated. The transient structural mechanical calculations are then performed applying a creep model which takes into account large temperature, stress and strain variations." (Document 2)
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Average Rating: 9.8 (54 votes)




A SMA Actuated Artificial Earthworm


A. Menciassi, S. Gorini, G. Pernorio, P. Dario


"This paper presents the design and development of a
microrobot which aims to replicate the locomotion principle of
earthworms. The undulatory locomotion of living earthworms
has been investigated deeply from the biological point of view,
but attempts of replication of earthworm models in real size are
limited. The authors designed an artificial earthworm with four
modules which can be driven independently according to defined
undulatory patterns with a typical frequency of 0.5 Hz. Each
module is actuated by one or more SMA springs whose
configuration has been designed in order to limit the wiring
problems and optimizing working frequency. The robot is
covered by a shaped silicone material which can be used as a
platform to insert tiny legs for obtaining differential friction
conditions. Preliminary tests demonstrate that the earthworm
prototypes can move with a speed of 0.22 mm/s, thus
approximating the behavior of biological earthworms.
earthworms. Hopefully, the artificial moving earthworm will
constitute a platform for improving the knowledge of
mechanisms regulating motion and perception abilities of
these creatures."
Model in paper does not use TB,SMA constitutive model.
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Average Rating: 3.3 (3 votes)




Advanced Analysis Of Structural Reliability Using Commercial FECodes


Christian Bucher, Dagmar Hintze, and Dirk Roos


"The paper focuses on two main issues, i.e. (a) The application of existing code for probabilistic analysis together with existing Finite Element Code for advanced Monte Carlo analysis (b) Presentation of a localglobal approximation strategy for the response surface method. This socalled "weighted radii" approximation appears to provide the flexibility and accuracy needed for the reliability analysis of complex structures." (Probabilistics)
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Average Rating: 10.0 (6 votes)




An Architecture for Fluid/Structure Analysis of Turbomachinery Blading


David A. Johnston, Charles J. Cross, J. Mitch Wolff


"Aeroelastic stability and response analyses used in the design of turbomachinery
blading are typically uncoupled: the unsteady aerodynamics and structural dynamics are
treated in separate models, with boundary conditions sequentially updated after stationary
periodic convergence is met. Higher fidelity simulations are achieved by coupling the
fluid and structure domains such that boundary conditions are updated once or several
times per physical time step of the simulation."
"As a starting point, the turbomachinery CFD research code
TURBO (Chen and Briley, 2001) and the commercial structural solver ANSYS® has been
chosen for coupling, although FSI is designed with modularity for future inclusion of
other fluid and structural solvers."
[ANSYS Dynamics, version unspecified]
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Average Rating: 10.0 (3 votes)




An Investigation into Vibration in Switched Reluctance Motors


Pragasen Pillay and William (Wei) Cai


"Two disadvantages of the switched reluctance motor
(SRM) are its torque ripple and acoustic noise. Previous work on
vibration modes and resonant frequencies of the laminations of
an 86 SRM is extended here to include the effects of the frame.
Both a smooth frame and a ribbed frame are examined, and the
presence of numerous additional vibratory modes in the ribbed
frame demonstrated. Accelerometer tests behind a pole verify
some of the theoretical predictions."
[ANSYS Dynamics, version unspecified]
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Average Rating: 10.0 (1 vote)




Analysis and Modeling of FiberWrapped Columns and ConcreteFilled Tubes


Mohsen Shahawy, Tom Beitelman, and Amir Mirmiran


"Carbonwrapping of concrete column adds to its strength and ductility. The behavior of carbonwrapped concrete is in general very similar to that of glasswrapped concrete. The bilinear confinement that was developed for glasswrapped concrete can be applied to carbonwrapped concrete. However, a better fit can be obtained by recalibrating the model for an entire database that consists of both carbonwrapped and glasswrapped concrete. Such database needs to be accompanied by a set of accurate coupon tests on the properties of the jacket. The finite element modeling is also useful in predicting the response of carbonwrapped concrete. A more accurate estimate of jacket properties make the analysis fit the test results better."
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Average Rating: 7.7 (37 votes)




Analysis and Simulation of the Ultrasonic/Sonic Driller/Corer(USDC)


X. Bao, Z. Chang, S. Sherrit, B.P. Dolgin, Y. BarCohen, D.S. Pal, S. Du, T. Peterson


"An ultrasonic/sonic driller/corer (USDC) was developed to address the challenges to the NASA objective of planetary insitu
rock sampling and analysis. The USDC uses a novel drive mechanism, transferring ultrasonic vibration into impacts on a
drill stem at sonic frequency using a freeflying mass block (freemass). The main parts of the device and the interactions
between them were analyzed and numerically modeled to understand the drive mechanism and allow design of effective
drilling mechanism. A computer program was developed to simulate the operation of the USDC and successfully predicted
the characteristic behavior of the new device. This paper covers the theory, the analytical models and the algorithms that were
developed and the predicted results."
[ANSYS Piezoelectric, version 5.4]
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Average Rating: 10.0 (4 votes)




Analysis Of The FOREVERExperiments Using A Finite Element Model


Eberhard Altstadt, Thomas Moessner, Baj Ral Sehgal, HansGeorg Willschütz


"An axissymmetric Finite Element (FE) model is developed based on the multipurpose code ANSYS/Multiphysics. Using the Computational Fluid Dynamics (CFD) module the temperature field within the melt pool and within the vessel wall is evaluated. The transient structural mechanical calculations are then performed applying a creep model which takes into account large temperature, stress and strain variations." (Document 1)
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Average Rating: 7.5 (10 votes)




Behavioural modeling for heterogeneous systems based on FEM descriptions


Joachim Haase, Sven Reitz, Peter Schwarz


"To simulate more complex systems using Spicecompatible circuit and system simulation programs, behavioural models of the components are required. The focus of the paper is to discuss two possibilities to derive such models from FEM descriptions."
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Average Rating: 10.0 (4 votes)




Bellcore Response Spectrum Analysis using ANSYS and Pro/ENGINEER


Andy Bax and Chris Andersen


Bellcore test (see other related DRD presentation).
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Average Rating: 10.0 (10 votes)




Cavity mechanics and vibrations under Lorentz forces excitation


Danilo Barni


(Harmonic, modal analyses)
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Average Rating: 6.7 (6 votes)




Conceptual Design for the SRRC Elliptically Polarizing Undulator EPU5.6. Part II: Magnetic Loading and Structure Deformation


Ch. Wang, M.C. Lin, C.H. Chang, L.H. Chang, H.H. Chen, T.C. Fan, K.T. Hsu, J.Y. Hsu, C.S. Hwang, K.T


"In part II of the conference paper, we address our efforts on the determination of the maximal magnetic loading on the individual magnetic arrays, and on the estimation of the resulting structure deformation by using the 3D finite element code ANSYS."
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Average Rating: 10.0 (3 votes)




Coupled StructuralAcoustic Analysis Using ANSYS [PDF]


Carl Howard (University of Adelaide)


Paper on using SHELL63 and SOLID45 with FLUID30 in acoustic analyses.
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Average Rating: 9.8 (27 votes)




Cyclic Symmetry Analysis


(ANSYS, Inc.)


Presentation on cyclic symmetry enhancements at ANSYS 6.1 (part of the "Advanced Analysis with ANSYS" seminar during the 2002 User's Conference).
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Average Rating: 9.6 (13 votes)




Design and Analysis of Ultrasonic Actuator in Consideration of LengthReduction for a USDC (Ultrasonic/Sonic Driller/Corer)


Z. Chang, S. Sherrit, M. Badescu, X. Bao, and Y. BarCohen


"The USDC uses a novel driving mechanism, transferring
ultrasonic vibration to sonic frequency impacts with the aid of a freeflying mass block (freemass). The free mass then
drives the drill bit. The actuator consists of a stack of piezoelectric disks with a horn that amplifies the induced vibration
amplitudes. The standard USDC is a slender device, and some times its length is too long for specific NASA missions.
It is of current interest to have novel designs that reduce the length of the device. For this purpose, two novel horn
designs were examined analytically. One is the flipped horn, the other is the planar folded horn. The new designs of the
horn were analyzed using finite element modeling and the results allow for the determination of the control parameters
that can optimize the performance of the ultrasonic horn in terms of the tip displacement and velocity. The results of the
modeling are described and discussed in this paper."
[ANSYS Piezoelectric, version 5.4]
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Average Rating: 10.0 (5 votes)




Designing the LiquidNitrogen Injection Rakes for the European Transonic Windtunnel Project


Ian Glendinning


Article from Heat Engineering magazine, back in 1993. Static and transient stress and thermal analysis performed in ANSYS 4.4a.
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Average Rating: 10.0 (3 votes)




Developing The Basis For Target Injection And Tracking In Inertial Fusion Energy Power Plants


D.T. Goodin, C.R. Gibson, R.W. Petzoldt, N.P. Siegel, L. Thompson, A. Nobile, G.E. Besenbruch, K.R.


The use of ANSYS's thermal and CFD capabilities to analyze the target injection and tracking of an Inertial Fusion Energy power plant
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Average Rating: 10.0 (4 votes)




Disruption Load Calculations Using ANSYS Transient Electromagnetic Simulations for the ALCATOR CMOD Antennas


Peter H. Titus


"ANSYS has been used to compute eddy current loads in CMod antenna components due to a disruption. The antennas are on the outbuard midplane, away from the direct involvement with halo currents, which characterize loading in the inner divertor and wall. Only inductively driven currents are computed. A rather complex but manageable electromagnetic model is used. Three of the antennas used in CMod were analyzed, Lower Hybrid, ICRH, and MHD antennas. The goal of these simulations was principally to quantify upper bound disruption loads."
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Average Rating: 9.6 (12 votes)




Easing the Strain


Glen Hartung


Analysis of the Spiderman Theme Park Ride
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Average Rating: 10.0 (2 votes)




Economic Method for the Collection of Complex Materials Data for the Design of Microsystems [PDF]


Jürgen Wilde, Markus Thoben, Klaus Becker


Use of Anand model.
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Average Rating: 10.0 (2 votes)




Electromagnetic, Thermal, and Structural Analysis of RF Cavities Using ANSYS


N. Hartman, R. A. Rimmer


"We report on techniques developed for producing electromagnetic, thermal, and structural solutions to RF cavity design problems in ANSYS, using one model. Methods for preparing imported geometry from solid modeling programs are discussed, and meshing techniques are suggested. A study of mesh density is presented, comparing mesh size with heat flux and Q factor convergence. The general analysis protocol is presented in a stepwise fashion, describing the macros that are used for conducting RF calculations. Finally, these techniques are applied to a proposed RF cavity for the NLC damping rings, which is shown as an example."
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Average Rating: 10.0 (13 votes)




Element for Modelling of Interaction Between Foundations and Bedrock in ANSYS Software


Radim Cajka, Ondrej Víta


"Ansys provides standard solutions to contact
tasks. It is a highperforming computing tool that
offers several modifications, making it possible to
create a new element and adjust the calculation to
individual requirements. When dealing with
specific problems relating to the contact between
the foundation and the foundation soil, it is
possible to create an element that will take into
account the behaviour of a soil layer under the
foundation exposed to shear. The shearing load
can be caused by undermining, concrete creep, or
concrete shrinkage."
Example of userdefined element (older USER100105)
[ANSYS Nonlinear, version 5.7.1]
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Average Rating: 10.0 (4 votes)




Example Applications


(Pacific Northwest National Laboratory)


Examples of use of ANSYS in engineering analysis
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Average Rating: 9.3 (7 votes)




Examples of using ANSYS in Ship Design


(Delta Marine)


Examples of using FEA for structural and CFD analyses of ships.
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Average Rating: 9.8 (25 votes)




Fatigue Code Benchmark


Riccardo Testi (Piaggio & C. spa)


A comparison of fatigue codes — LMS Virtual.Lab (Durability), FEMFAT, and MSC.Fatigue — for use with ANSYS
Web version here
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Average Rating: 6.2 (8 votes)




FE Analysis of ATLAS: End Cap Support Structure  PSD Spectrum Analysis


C.J.Nelson


"This report investigates the effect of a PSD (Power Spectral Density) random input load on an
early FE model of the ATLAS EndCap Support Structure. Statistical predictions of the
maximum displacement are presented."
[ANSYS Structural, version 5.3]
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Average Rating: 8.8 (4 votes)




Finite Deformations Of An Earthworm Segment


H. Kunz


Use of MooneyRivlin model.
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Finite Element Analysis of an AC Solenoid Including the Effects of Harmonic Loading and Magnetic Saturation


A. Bax, C. Andersen, M. Yaksh, D. Ostergaard


From 1994 Conference
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Average Rating: 9.7 (15 votes)




Finite Element Limit Load Analysis of ThinWalled Structures by ANSYS (Implicit), LSDYNA (Explicit) and in Combination


Wilhelm Rust


"After discussing general properties of implicit Finite Element analysis using ANSYS and explicit analysis
using LSDYNA it is shown when and how quasistatic limit load analyses can be performed by a transient
analysis using explicit time integration. Then we focus on the remaining benefits of implicit analysis
and how a proper combination of ANSYS and LSDYNA can be used to prepare the transient analysis by
common preprocessing and static analysis steps. Aspects of discretization, solution control, consideration
of imperfections and methods of checking the results are outlined."
[ANSYS LSDYNA, Nonlinear, version unspecified]
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Average Rating: 6.2 (4 votes)




Finite Element Modeling Of Damage Accumulation In Bolted Composite Joints Under Incremental Tensile Loading


Th. Kermanidis, G. Labeas, K.I. Tserpes and Sp. Pantelakis


"A threedimensional progressive damage model was developed in order to simulate the damage accumulation of bolted singlelap composite joints under inplane tensile loading. The parametric study includes stress analysis, failure analysis and material property degradation. Stress analysis of the threedimensional geometry was performed using the ANSYS FE code. Failure analysis and degradation of material properties were implemented using a progressive damage model, which is incorporated in an ANSYS macroroutine."
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Average Rating: 8.3 (21 votes)




Finite Element Predictions of PlasticityInduced Fatigue Crack Closure in ThreeDimensional Cracked Geometries


Jeffrey Skinner, Jr.


"Elasticplastic finite element analyses were performed to predict the crack opening level profiles in semielliptical surface cracks."
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Average Rating: 8.6 (21 votes)




Finite Elements for Thermoelectric Device Analysis in ANSYS


Elena Antonova and David Looman


"A new set of ANSYS coupledfield elements enables users to accurately and efficiently analyze thermoelectric devices. This paper reviews the finite element formulation, which, in addition to Joule heating, includes Seebeck, Peltier, and Thomson effects. Examples of steadystate and transient simulations of a thermoelectric generator and a singlestage Peltier cooler are presented for thermoelectric analysis verification. An analysis of a multistage thermoelectric cooler is performed to demonstrate ANSYS parametric analysis capability."
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Average Rating: 9.2 (6 votes)




Geometrical Aspects of a HollowCathode Magnetron (HCM)


Zhehui Wang and Samuel A. Cohen


"A hollowcathode magnetron (HCM), built by surrounding a planar sputteringmagnetron cathode with a hollowcathode structure (HCS), is operable at substantially lower pressures than its planarmagnetron counterpart... Detailed magnetic field distribution was calculated using the ANSYS code, and confirmed by Hall probe measurements."
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History of ANSYS University Support Program


D.E. Dietrich (CurtissWright ElectroMechanical Corporation)


This document describes the history of the ANSYS University Support Program as well as history of ANSYS/ED software.
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Average Rating: 7.5 (4 votes)




History of XANSYS Mailing List


Dan Bohlen (GE Aircraft Engines)


History of the XANSYS mailing list.
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Identification Methodology of Electrical Equivalent Circuit of the Piezoelectric Transformers by FEM


Pigache François, Nadal Clément


Methodology using Ansys analyses for the identification of Electrical Equivalent Circuit of piezoelectric transformer. The demonstration is done with typical multilayered Rosen transformer but the method is relevant for any kind of transformer structures.
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Average Rating: 10.0 (4 votes)




Iterative Determination of Save Working Loads (SWL) for Crawler Cranes


G. Kolarov, K.H.Reckziegel, T.Göllnitz


"A program for the calculation of Save Working Loads (SWL) is introduced. It uses ANSYS and its parametric design language. The models are based on large displacements, small strains and linearelastic material. The limit state method with partial safety coefficients is applied. For a crawler crane many configurations exist and they have to be calculated for different positions and load cases. Special attention is paid to the overall structural stability of the crane and to the effectiveness of the calculations."
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Average Rating: 8.8 (4 votes)




Lab Tests Improve Accuracy of FEA


(ANSYS, Inc.)


"Test results steer finetuning of ANSYS/LSDYNA simulation in Motorola cell phone study" (from ANSYS Solutions Magazine, Vol. 2 No. 2)
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Average Rating: 10.0 (7 votes)




LargeArea, HighTransparency Extraction System for Negative Ions


B. Heinemann, J. Bucalossi, P. Frank, R. Riedl, A. Simonin, E. Speth, O. Vollmer


(Thermal analysis)
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Low Creep and Hysteresis Load Cell Based on a Force to Liquid Pressure Transformation


Robert A.F. Zwijze, Remco J. Wiegerink, Theo S. J. Lammerink, and Miko Elwenspoek


"Important problems in load cells are creep and hysteresis. Expensive high grade steels are used in order to reduce these effects. In this paper a load cell design based on a force to liquid pressure transformation is presented. The design is insensitive to hysteresis and creep and can be made at very low costs. Analytical, numerical and experimental results are in very close agreement with each other." (FLUID79) See related paper
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Average Rating: 10.0 (5 votes)




LSDYNA Simulations of Thermal Shock in Solids


Goran Skoro


PowerPoint presentation on thermal shock on rod.
[ANSYS LSDYNA, version unspecified]
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Average Rating: 10.0 (2 votes)




Microsystem Design Using Simulator Coupling


S. Wünsche, C. Clauß, P. Schwarz, F. Winkler


"A methodology for simulating the performance of complex microsystems using simulator coupling is presented. The technique is based on the coupling of the FEM program ANSYS with the circuit and system simulator SABER."
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Modeling Of Aluminum Reduction Cells Using Finite Element Analysis Techniques


Imad Tabsh, Marc Dupuis


"This paper summarizes the authors' experience in using FEA to model HallHéroult reduction cells. FEA capabilities necessary to adequately simulate thermoelectric, electromagnetic and stress fields within the cell are identified." (Used ANSYS 4.4A and 5.0) Available is an older, related paper on ThermoElectric Coupled Field Analysis of Aluminum Reduction Cells Using the ANSYS Parametric Design Language.
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Average Rating: 9.0 (5 votes)




MultiCriteria Shape Optimization of a Funnel in Cathode Ray Tubes Using Response Surface Model


Tae Hee Lee, Kwangki Lee, Kwang Soon Lee


"The ultimate goal of simulation that represents the behaviour of structures is to optimize their response performances within the specific requirements and needs with respect to the design variables. The first step of the design of cathode ray tubes is to design the glass geometry, called funnel geometry, to endure the vacuum stress because it is a main structure of cathode ray tubes. In order to create 3dimensional funnel geometry in the cathode ray tubes, higher order response surface model is used instead of NURBS (nonuniform rational Bsplines) or Bezier curve because it is more robust for understanding the geometry change in finite element analysis. By combining finite element analysis, response surface model and sequential quadratic programming within the process integration framework, the shape optimization of a funnel is successfully performed and the maximum stress is reduced to almost half of the current one."
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Average Rating: 7.1 (7 votes)




Novel Horn Designs for Ultrasonic/Sonic Cleaning Welding, Soldering, Cutting and Drilling


S. Sherrit, S.A. Askins, M. Gradziol, B.P. Dolgin, X. Bao, Z. Chang, and Y. BarCohen


"In this paper we will present a variety of novel horn
designs, which overcome some of the limitations discussed above. One particular design that has been found to overcome
these limitations is the folded horn. In this design the horn elements are folded which reduce the overall length of the
resonator (physical length) but maintain or increase the acoustic length. In addition initial experiments indicate that the tip
displacement can be further adjusted by phasing the bending displacements and the extensional displacements. The
experimental results for a variety of these and other novel horn designs will be presented and compared to the results
predicted by theory."
[ANSYS Piezoelectric, version unknown]
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Average Rating: 10.0 (3 votes)




Numerical Modeling for Systematization of Line Heating Process


JongGye Shin, WonDon Kim, and JangHyun Lee


"In this paper, we first propose a conceptual configuration for ship production system of plate forming. It is necessary to integrate lofting and plate forming activities for minimum thermal energy in line heating process. The modeling of heating torch, water cooling, and plate to be formed is proposed for the finite element analysis after the mechanics of line heating is studied. A threedimensional 8node solid elements of ANSYS were chosen for analysis." (ThermalStress)
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Average Rating: 10.0 (6 votes)




Optimization of a Circular Piezoelectric Bimorph for a Micropump Driver


Christopher J. Morris and Fred K. Forster


"Piezoelectric bimorph actuation has been successfully used in numerous types of microdevices, most notably micropumps. However, even for the simple case of circular geometry, analytical treatments are severely limited. This study utilized the finiteelement method to optimize the deflection of a circular bimorph consisting of a single piezoelectric actuator, bonding material and elastic plate of finite dimensions. Optimum actuator dimensions were determined for given plate dimensions, actuatortoplate stiffness ratio and bonding layer thickness." (PLANE13)
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Average Rating: 2.0 (5 votes)




Prediction of Thermal Fatigue in Tooling for Diecasting Copper via Finite Element Analysis


Amit Sakhuja, Jerald R. Brevick


"Recent research by the Copper Development Association (CDA) has demonstrated the feasibility of diecasting
electric motor rotors using copper. Electric motors using copper rotors are significantly more energy
efficient relative to motors using aluminum rotors. However, one of the challenges in copper rotor diecasting is low tool
life. Experiments have shown that the higher molten metal temperature of copper (1085 °C), as compared to aluminum
(660 °C) accelerates the onset of thermal fatigue or heat checking in traditional H13 tool steel. This happens primarily
because the mechanical properties of H13 tool steel decrease significantly above 650 °C. Potential approaches to
mitigate the heat checking problem include: 1) identification of potential tool materials having better high temperature
mechanical properties than H13, and 2) reduction of the magnitude of cyclic thermal excursions experienced by the
tooling by increasing the bulk die temperature. A preliminary assessment of alternative tool materials has led to the
selection of nickelbased alloys Haynes 230 and Inconel 617 as potential candidates. These alloys were selected based
on their elevated temperature physical and mechanical properties. Therefore, the overall objective of this research work
was to predict the number of copper rotor diecasting cycles to the onset of heat checking (tool life) as a function of bulk
die temperature (up to 650 °C) for Haynes 230 and Inconel 617 alloys. To achieve these goals, a 2D thermomechanical
FEA was performed to evaluate strain ranges on selected die surfaces. The method of Universal Slopes (Strain Life
Method) was then employed for thermal fatigue life predictions."
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Average Rating: 8.8 (4 votes)




Reduced Order Modeling of Fluid Structural Interactions in MEMS Based on Modal Projection Techniques


Jan Mehner, Wolfram Doetzel, Bernd Schauwecker, Dale Ostergaard


This paper provides useful background information on the modal projection technique available in ANSYS with FLUID136 elements (RMFLVEC, DMPRAT, and ABEXTRACT macros). Although the ROM140 element has not been officially released (it is undocumented), this paper introduces that element as well.
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Average Rating: 10.0 (1 vote)




Simulation Of An Ultrasonic Piezoelectric Transducer


David Johnson, Dharmendra Pal


"This paper presents the piezoelectric, coupled field capability of the ANSYS/Multiphysics product in both linear and nonlinear simulations. A piezoelectric transducer assembly is modeled, including a discussion of vendorsupplied property data as it relates to the ANSYS material input requirements. A cylindrical geometry is treated as an axisymmetric model using the PLANE13 element type. The transducer model is used in modal and harmonic analysis solutions to understand its mechanical behavior and to aid in design modifications to optimize its weight, performance, and electrical power consumption."
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Average Rating: 9.4 (17 votes)




Smart Materials for Silent Alarms


Mostafa Hedayatnia (Philips Consumer Communication)


"Piezoceramic materials can produce motion by receiving electric potential across their polarized surfaces. Using finiteelement analysis and optimization, engineers at Philips Corp. in Sunnyvale, Calif., have developed a miniature vibrator/piezobender that consumes only 8 milliamperes."
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Average Rating: 5.0 (4 votes)




The Control Of The Thermal Environment Of Perimeter Spaces In Buildings To Prevent Cold Drafts


Yuji Hukushima, Yasuo Utsumi, Hiroshi Kobayashi, Yoshimi Ishikawa, Mitsuo Suzuki, And Tatsuya Yamash


"This paper is focused on the evaluation of simulation system using the experiment result and the configuration of pericounter which is the part of counter unit setting at bottom of window side with heat panel to avoid the influence of cold draft, utilizing simulation system. The simulation shows similar flow pattern to full scale experiment and consequent simulations indicate that cold draft does not flow into interior zone when the heat generation rate exceeds heat loss from the window in most cases. When the heat generation portion is 75% of heat loss from the window, some cases which have certain configuration of pericounter successfully avoids the influence of draft without fan."
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Average Rating: 10.0 (5 votes)




Thermal Stress Analysis of Numi Baffle


Bob Wands


(Thermalstress analysis)
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Average Rating: 10.0 (6 votes)




Transient Thermal Analysis of Spot Welding Electrodes


K. S. Yeung, P. H. Thornton


"The accurate thermal simulation of a spot welding electrode cap could permit critical design parameters to be identified for improved electrode life. In this study, a parametric model has been developed to predict the transient thermal behavior of a typical spot welding electrode cap. The model employs the technique of conjugate heat transfer analysis to avoid the problem of estimating a value for the heat transfer coefficient that arises with conventional heat transfer analysis."
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Average Rating: 8.1 (27 votes)




TV Panel Glass Forming and Annealing Process Model


John Chumley


"This article describes the modeling technique used in forming a TV glass panel from the formation of the droplet of molten glass (gob) delivered to the forming machine (ELP) through the pressing and cooling operations plus the annealing oven (lehr). To assure the continuity of the solution, the model also tracks the return of the empty mold parts to their initial position on the ELP. The complexity of the problem and variety of solution domains involved requires multiple solution techniques." (VISCO89 and Flotran FLUID142)
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Average Rating: 10.0 (12 votes)




Unofficial History of ANSYS


ShenYeh Chen (Honeywell)


This is an unofficial history of Dr. Swanson and ANSYS.
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Average Rating: 7.1 (19 votes)




Using a Heat Transfer Analogy to Solve for Squeeze Film Damping and Stiffness Coefficients in MEMS Structures


Dale Ostergaard, Jan Mehner


This paper provides background information on using a heat transfer analogy to solve the Reynolds equation (squeeze film damping). Although ANSYS now has FLUID136 and FLUID138 to solve such problems, this paper can be useful in gaining a better understanding of these types of analyses.
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Average Rating: 10.0 (6 votes)




Using ANSYSBased Aluminum Reduction Cell Energy Balance Models to Assist Efforts to Increase Lauralco's Smelter Productivity


Marc Dupuis and Claude Fradet


"State of the art ANSYSbased aluminum reduction cell energy balance models have been successfully used to assist efforts to increase Lauralco's smelter productivity by improving cell thermoelectric design." From 1998 Conference PDF version here
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Average Rating: 8.1 (8 votes)




Vibration Prediction in Switched Reluctance Motors With Transfer Function Identification From Shaker and Force Hammer Tests


Zhangjun Tang, Pragasen Pillay, and Avoki M. Omekanda


"A vibration prediction model for the switched reluctance
motor is constructed in this paper. Shaker and force hammer
tests for vibration measurement are used for measuring crucial parameters
like modal frequency and damping ratio for the transfer
function. A detailed lookup table of normal force versus phase current
and rotor angle is constructed based on finiteelement calculations.
The model is then verified by experiments, with acceptable
accuracy."
[ANSYS LowFrequency Electromagnetics, version unspecified]
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Average Rating: 10.0 (6 votes)



