Improving the crashworthiness of B-Pillars in side-collisions

Jiayu Guo, Shuyang Liu, Yu Fu, Ricky Liu, Jincheng Shi
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Abstract

The B-pillar plays a crucial element in protecting passengers during side collisions. However, the current technology used in B-pillars is insufficient in providing adequate protection. Therefore, this research aims to investigate ways to improve the crashworthiness of the B-pillars. The study utilizes a 2020 Toyota Yaris due to its prevalence and poor side-crashworthiness and a right body measuring 80cm 60cm 40cm to simulate side collision. The results show that the velocity and acceleration of the upper B-pillar are greater than that of the lower B-pillar, indicating that the welding spot should be placed at the lower end of B-pillars, and the pillars thickness should be increased to enhance side crashworthiness. Furthermore, the study discovers that PVC, when combined with nano-materials, ABS resin, when combined through physical mixing, and SMC materials experience no significant deformation during collision while possessing an incomparably low density. Therefore, the study proposes the use of these stronger materials as an alternative to steel. The cost and feasibility of using these materials in mass production is also analyzed.
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提高侧面碰撞时 B 柱的耐撞性
在发生侧面碰撞时,B 柱对保护乘客起着至关重要的作用。然而,目前 B 柱采用的技术不足以提供足够的保护。因此,本研究旨在探讨如何提高 B 柱的耐撞性。由于 2020 年款丰田雅力士的普遍性和较差的侧面耐撞性,本研究使用其右侧车身(尺寸为 80 厘米 60 厘米 40 厘米)来模拟侧面碰撞。结果表明,B 柱上部的速度和加速度均大于 B 柱下部,这表明应将焊点置于 B 柱下端,并增加 B 柱厚度,以提高侧面耐撞性。此外,研究还发现,与纳米材料结合的 PVC、物理混合的 ABS 树脂和 SMC 材料在碰撞时不会产生明显变形,同时密度极低。因此,研究建议使用这些强度更高的材料来替代钢材。研究还分析了使用这些材料进行大规模生产的成本和可行性。
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