The Ring-Shaped Route Body Structure Design and Evaluation Method

摘要

The performance matching between material and structure is the most fundamental matching relationship during car body engineering development. In this paper, the "3S-Targets" conception of car body structure design is summarized by studying theme reports of automotive original equipment manufacturers (OEM) published in previous Euro-Car-Body conferences. Meanwhile, the "Ring" structure feature is concluded which has been proposed by OEMs from different points of view and can meet different performance requirements simultaneously. Finally, ring-shaped route body is proposed by regarding the car body skeleton as being made up of 16 Rings. From ring-structured materials and performance evaluation matrix, on one hand, this method can reasonably explain the relevance between crash safety star rating and torsion stiffness; on the other hand, the "3R-BODY" evaluation method for design itself is proposed which is independent and ahead of simulation and test. It provides an important theoretical significance and value in engineering for car body lightweight design.