基于某车型车顶瘪塘问题的分析与解决

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摘 要：本文基于某车型行李架安装导致的车顶瘪塘问题，通过对车顶行李架系统的结构分析建立了车顶变形量公式，提出了减小泡棉有效接触面积和减小泡棉弹性模量两种解决方案，并通过实车试验和有限元仿真验证了方案的有效性，最终解决了该车顶瘪塘问题。

关键词：行李架 车顶瘪塘 泡棉 有限元仿真

Abstract：Based on the roof deformation problem after roof rack’s assembling， this paper analyzed the construction of roof rack system and built a formula of roof deformation. Two solutions were raised and verified through real car test and finite element model simulation. One solution is to reduce the contact area of roof rack foam. The other solution is to reduce the elastic modulus of foam. The proposed schemes have successfully solved the roof deformation problem.

Key words：roof rack， roof deformation， foam， finite element model simulation

1 引言

随着SUV市场的逐渐扩大，自驾游和家用储物需求也与日俱增，车顶行李架的运用不仅弥补了车后行李舱空间的不足，也给SUV车型增加了运动感和时尚感[1]，行李架变成了各大主机厂SUV车型的标准配置。（剩余5065字）