Abstract

The newly revised GB 13057-2014 put forward high requirements for the dynamic occupant protection of passenger car seats. Due to the high density of steel, there is currently not much space for lightweight through structure improvement. In this paper, the quasi-static and dynamic mechanical properties of CFRP and corresponding simulations are used to study the mechanical behaviour of CFRP and verify the accuracy of simulation. It is now applied to the composite seat backplane structure design, and combined with the CFRP moulding process and the energy absorption characteristics of the car seat backplane to initially design the CFRP seat backplane material and structure. At the same time, considering the designability of the material itself, the ply optimisation technology under multi-condition is used to design the material and structure of the CFRP passenger car seat backplane. The new CFRP passenger car seat achieves significant weight reduction while meeting regulatory requirements.

摘要

新修订的GB 13057-2014对乘用车座椅的动态乘员保护提出了很高的要求。由于钢材的密度较高，目前通过结构改进实现轻量化的空间不大。本文利用CFRP的准静态和动态力学性能以及相应的模拟来研究CFRP的力学行为并验证模拟的准确性。现已应用于复合材料座椅背板结构设计，结合CFRP成型工艺和汽车座椅背板的吸能特性，初步设计了CFRP座椅背板材料和结构。同时，考虑到材料本身的可设计性，采用多工况下的帘布层优化技术设计CFRP轿车座椅背板的材料和结构。新型 CFRP 乘用车座椅在满足法规要求的同时显着减轻了重量。