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Generic “Stick” Model of a Vehicular Structure
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English
Abstract
The paper describes a method of developing generic “stick” models (beam only finite element models) of vehicle structures. The EAL program is used to create two- and four-door generic models through a capability for specifying geometry by assigning dimensions of a vehicle structure. A description is given for elastic analyses, the steps of sensitivity analyses and the test setup for measuring bending and torsional stiffness of a body-in-white structure. The analysis results are shown to be in good agreement with the test data for the overall bending and torsional stiffness. Sensitivity coefficients of the total strain energy are computed using the forward finite diference scheme.
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Authors
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Citation
Chon, C., Mohammadtorab, H., and El-Essawi, M., "Generic “Stick” Model of a Vehicular Structure," SAE Technical Paper 860825, 1986, https://doi.org/10.4271/860825.Also In
References
- Bennett, J. A. Nelson, H. F. 1979 “An Optimization Capability of Automotive Structures” 3rd International Conference on Vehicle Structural Mechanics Troy, Mi. Oct. 10-12 1979 1 9
- Du, H. A. Chon, C. T. 1983 “Modeling of a Large-Scale Vehicle Structure” proc. of the 8th Conf. on Electronic Computation University of Houston Houston, TX Nelson, J. K. Jr. ASCE 326 335
- Fenyes, P. A. 1981 “Structural Optimization with Alternate Materials: Minimum Mass Design of the Primary Structure” SAE Paper 810228
- DeVries, R. I. Chon, C. T. 1984 “Structural Design Sensitivity Analysis via Strain Energy Variations” 5th Int. Conf. on Vehicle Structural Mechanics Detroit, Mi. April 2-4 1984 135 141
- Chon, C. T. 1985 “Rationalization of “Stick” Model Approximation”
- Whetstone, W. D. 1983 “EISI EAL Engineering Analysis Language Reference Manual” Engineering Information Systems, Inc. San Jose, CA
- Whetstone, W. D. 1979 “SPAR Structural Analysis system”
- Kulkarni, H. T. Prasad B. Emerson, J. F. 1981 “Generic Modeling Procedure for Complex Component Design” SAE Paper 811320 4th Int. Conf, on Vehicle Structural Mechanics Detroit Nov. 1981
- Whetstone, W. D. 1979 “Development of Generic Models Using EISI-EAL” Symposium on Mathematical Modeling in Structural Engineering NASA Langley October 1979
- “SPOTS - Section Properties of Thin Walled Sections” Structural Dynamics Research Corporation 1976 SDRC Mechanical Design Library 1
- Barthelemy, B. M. Chon, C. T. Haftka, R. T. 1986 “Finite Difference Approximation in a Generic Model”