Jounce Bumper Modelling Using Finite Element Analysis

Mohammed Elmahdi Elgack, Haret Hossoon, Omar A. Ghannam, H. Hussien
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Abstract

Jounce bumpers act as suspension limiters during impact. They prevent the suspension from getting into kinematic singularity situation during shock impacts due to potholes, curbs, and debris on the road. A Jounce bumper is manufactured of hyperplastic materials to make use of the viscoelasticity characteristics allowing it to be a better absorber that minimizes transmitted forces to the vehicle body for failure prevention. Therefore, it is essential to create accurate models for reliable and practical bumpers testing and design optimization before manufacturing. In this work, we will provide a modelling approach to evaluate the static performance of some traditional jounce bumpers. The model accuracy was evaluated using standard bumper tests and found to have a good agreement.
使用有限元分析的弹跳保险杠建模
颠簸保险杠在撞击过程中起到悬挂限制器的作用。它们可以防止悬架在受到道路上的坑洼、路缘和碎片的冲击时进入运动学奇异状态。弹跳缓冲器是由增生性材料制造的,利用粘弹性特性,使其成为一个更好的吸收器,最大限度地减少传递到车身的力,以防止故障。因此,在制造前创建可靠和实用的保险杠测试和设计优化的精确模型至关重要。在这项工作中,我们将提供一种建模方法来评估一些传统缓冲器的静态性能。用标准保险杠试验对模型的精度进行了评价,结果表明模型的精度与标准保险杠试验结果吻合较好。
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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