Crush Simulation of Car Using LSDYNA

Abstract:

The paper is concerned with FEA procedures are now used abundantly in automotive industry. Linear static and dynamic analyses are conducted in a routine manner, and nonlinear analysis is increasingly pursued. Two analysis fields in which highly nonlinear conditions are simulated are the crash and crush analysis of complete motorcar models. The purpose of a crash analysis is to see how the car will behave in a frontal or sideway collision. In a crash analysis the crashing of a car at about 30mph and above is considered. Various crash codes have been developed based on explicit time integration, special shell elements for this specific analysis results have been compared with laboratory test data, and the simulations have proved very valuable. In crush analysis, a quite different physical phenomenon is considered. Here the purpose is to establish the ultimate strength of the car body in a static situation. The ultimate strength affects the behavior of the car under various operating conditions, such as when the car overturns in an accident. While crash analysis of cars have been carried out with mush success, a crush analysis is much more difficult to achieve. The reasons for this greater difficulty lie in the fact that a slow-speed, almost static analysis requires increased robustness and efficiency in the solution algorithms. Specifically, for the crush analysis, the shell element mush be of high predictive capability, and be robust and computationally efficient for static analyses.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 2326-2331
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.2326
• Online since: January 2012
• Authors: Eriki Ananda Kumar, R. Ravichandra, Devaraj Kanisin
• Keywords: Car Overturn in an Accident, Crush Analysis, Finite Element Analysis (FEA), Impact of Car, LS-DYNA

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