F2012-E04-002-THE RING-SHAPED ROUTE BODY 环状路径车身.pdf

F2012-E04-002 THE RING-SHAPED ROUTE BODY STRUCTURE DESIGN AND EVALUATION METHOD 1 * 2 Feng, Xiao ; XinHua, Gao 1Wuhan ShangShan Simulation Technology Co., Ltd, China; 2HeFei University of Technology, China ABSTRACT-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. KEYWORDS-Performance Matching, 3S-Targets, Ring-shaped Route Body, 3R-BODY Evaluation Method 1 INTRODUCTION Car body is a community of the performance for crash safety, structure NVH and strengthdurability. The substance of car body structure forward development engineering is the performance development under lightweight design which needs to face at least five basic questions: reference structure, performance matching, assessment criteria, evaluation method and development procedure. The ring-shaped route body structure