Optimal Design of Thin-Walled Structure subject to Crashing Deformations (Second Report) - Optimization of Load-Displacement Relation

摘要

In the previous report, a topology optimization algorithm of shell structure subject to crashing deformations was presented. As a topology optimization method the density method is used and the work done by the external loads is employed as the objective function. The bilinear shell element, which is widely used for the car crash analysis, is employed in the crash analysis with the explicit time integration scheme. In the vehicle safety design it is sometimes necessary to design a structural member to have a desirable load displacement relation. In this paper, we will show an optimization method for a given load displacement curve.