有限要素法による薄肉箱型断面真直部材の衝撃圧潰解析

抄録

Vehicle collision characteristics are among the most important characteristics to be examined in 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 most ideal. Beads or reinforcements are often used to produce this kind of mode; however, investigation conducted on them has been mainly through experiments due to an absence of adequate analytical methods such as FEM. In this study, we show that, using a mathematically improved FEM along with a supercomputer, precise crush analysis can be conducted on columns or columns with some beads when the first buckling mode is provided as initial deflection.