Abstract
Vehicle collision characteristics are among the most important performance parameters to be examined at the design stage. These characteristics are dependent on the collapse mode of the box columns making up the side members of the body. An accordion-type collapse mode in which the columns do not bend but collapse in sequence is ideal. Beads or reinforcements are often used to produce this kind of mode ;however, most of the work done on them has been of an experimental nature owing to the lack of suitable analytical methods such as finite-element models. In this study, it is shown that a mathematically improved finite-element model, which can be run on a supercomputer, makes it possible to conduct a precise crush analysis of beaded columns When the first buckling mode is applied as the initial deflection.
