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International Journal of Automotive Technology > Volume 3(4); 2002 > Article
International Journal of Automotive Technology 2002;3(4): 129-135.
H. S. KIM1, H. J. YIM2, C. B. KIM3
1Hyundai Motors
2Kookmin University
3Inha University
Durability estimation of a prototype vehicle has traditionally relied heavily on accelerated durability tests using predefined proving grounds or rig tests using a road simulator. By use of those tests, it is very difficult to predict durability failures in actual service environments. This motivated the development of an integrated CAE (Computer Aided Engineering) methodology for the durability estimation of a prototype vehicle in actual service environments. Since expensive computational costs such as computation time and hardware resources are required for a full vehicle simulation in those environments with a very long span of enent time, the conventional CAE methodologies have little feasibility. An efficient computational methodology for durability estimations is applied with theoretical developments. The effectiveness of the proposed methodology is shown by the comparison of results of the typical actual service environment such as the city mode with those of the typical accelerated durability test over the Belgian road.
Key Words: Computational durability estimation, Flexible multibody dynamic analysis, Dynamic stress analysis, Fatigue life prediction, City mode, Belgian mode, Degrees of freedom (DOFs)
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