Design of Automotive Body Structure for Roof Crush

Crashworthiness and Occupant Protection in Transportation Systems Pub Date : 1996-11-17 DOI:10.1115/imece1996-1012

H. Mahmood, M. Baccouche

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Abstract

This paper investigates the parameters that influence the design and analysis of automotive structures subject to roof crush loading. Influence of components such as roof bows, A-pillars, B-pillars, roof side rails, windshield header, and windshield glass on the load carrying capacity of the green house structure is discussed. Several analysis of the roof model were carried out to simulate the effect of roof bows, windshield glass, windshield header, and roof side rail span. The results of this analysis are discussed in terms of components contribution to the strength and stability of the greenhouse structure. The mode of collapse of the 3D roof structure is analyzed and the formulation of the plastic hinges and maximum collapse moment is discussed. Results from a non-linear finite beam element system code are presented in this paper. Axial and bending strengths, sequences of failure, and modes of collapse from this code are discussed at both the component and system level. Also presented in this paper is a summary of engineering guidelines and recommendations for designing roof structure components to carry roof crush load.

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汽车顶压车身结构设计

本文研究了影响车顶挤压载荷作用下汽车结构设计与分析的参数。讨论了屋面弓形梁、a柱、b柱、屋面侧轨、风挡板、风挡玻璃等构件对温室结构承载能力的影响。对车顶模型进行了多次分析，模拟了车顶弓、风挡玻璃、风挡头和车顶侧轨跨度的影响。从影响温室结构强度和稳定性的构件的角度讨论了分析结果。分析了三维顶板结构的倒塌模式，讨论了塑性铰和最大倒塌力矩的计算公式。本文给出了非线性有限元系统的计算结果。轴向和弯曲强度，破坏顺序，和崩溃模式，从这个代码在组件和系统级别进行了讨论。本文还概述了设计承受顶板挤压荷载的顶板结构构件的工程准则和建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Crashworthiness and Occupant Protection in Transportation Systems

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