Abstract
Taking HYPERMESH as pre-processor, the modeling methods for a frame of the cab-over-engine medium bus in crash is expounded. Based on software LS-DYNA, the crash process is simulated with the crash regulations on M1 type bus. The deformations and energy absorbing for the parts and whole frame are analysised, especially for the invade distance and acceleration in crash. Based on these, the crash worthiness is estimated further for the medium bus.
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