Design study of body structure consist of standardized components as module

(Realizing and evaluation of body frame structure made of CFRP)

Abstract

We have constructed a design method for body structures consist of standardized components which connects pipes, spacers and joints in a previous study. As a practical application example, we have designed detailed shape of spacers and joints of rear frame. In order to evaluate stiffness and displacement under four experiments such as torsion and bending, we have constructed the three-dimensional CAE models. In the CAE models, we have assumed the CFRP’s Young's modulus was low considering the manufacturing process. Furthermore, we have made it possible to simulate adhesive behavior by simple modeling instead of adopting the adhesive model called CZM (Cohesive Zone Model) with high model creation cost. As a result, in the initial CAE model, displacement error at the load point was from 4.8% to 27.6%. In the improved CAE model, we obtained a model that allows the error to be within 10%.