无缝安全气囊仪表板撕裂线的结构分析与优化  

Structural Analysis and Optimization for the Invisible Tear Seam of Airbag on Instrument Panel

作　　者：袁智军[1,2] 王辉[1] 刘华官 危学兵 华林[1] 房飞 

机构地区：[1]武汉理工大学,现代汽车零部件技术湖北省重点实验室,武汉430070 [2]上汽通用五菱汽车股份有限公司,柳州545007

出　　处：《汽车工程》2016年第8期1025-1029,共5页Automotive Engineering

基　　金：国家自然科学基金(51305318);中国博士后科学基金(2015M582484);湖北省自然科学基金(2015CFB277)资助

摘　　要：本文中以目前常用的硬质PP仪表板为对象,基于LS-DYNA平台建立安全气囊点爆和撕裂线区域头部碰撞过程的计算模型,根据气囊点爆和仪表板低速头碰要求,采用正交试验方法并结合台架试验深入探究铣刀弱化无缝气囊仪表板撕裂线设计参数对弱化区强度和气囊展开的影响。结果表明,对仪表板弱化区的影响程度依次为撕裂线的间距、残厚和宽度,确定的最佳设计参数组合为撕裂线残厚0.8mm,间距15mm,宽度1.5mm。本研究为无缝气囊撕裂线的结构分析与优化提供了理论依据。With the Polypropylene instrument panel （IP） currently commonly used as objective,the calculation models for safety airbag deployment and head impact on tear seam are built based on LS-DYNA platform,and according to the requirements of airbag deployment and low-speed head impact on IP ,the effects of the design parameters of milling weakened invisible tear seam on the strength in weakened area and airbag deployment are investigated in-depth through orthogonal experiment and bench test. The results show that the influence order of design parameters on the weakened area properties of IP is tear seam spacing,residual thickness and width, and the optimized combination of tear seam design parameters is a residual thickness of 0. 8 mm,a spacing of 15 mm and a width of 1. 5mm. The research provides a theoretical basis for the structural analysis and optimization of milling weakened invisible tear seam.

关 键 词：仪表板 撕裂线 正交试验 结构分析 优化 

分 类 号：U463.83[机械工程—车辆工程]