开发PVB层玻璃等价分析模型,用于TRAM撞车安全分析
Yuhyeong Jeong1, Youngjin Jeon1,2, Wonjoo Lee1
1Department of Mechanical Engineering, Hanyang University ERICA, 55, Hanyangdaehak-ro, Sangnok-gu, Ansan-si 15588, Gyeonggi-do, Republic of Korea.
Polymers
|January 11, 2025
概括
一个新的等效模型准确地模拟了用聚乙烯 (PVB) 层玻璃对行人头部的撞击,大大降低了分析成本. 这一进步有助于了解电车碰撞期间的头部伤害标准 (HIC).
科学领域:
- 计算力学是计算力学.
- 材料建模 材料建模
- 车辆安全工程 车辆安全工程
背景情况:
- 在城市交通中,行人安全是一个关键问题,特别是与电车相撞.
- 用层玻璃精确模拟头部撞击对于评估受伤风险至关重要,例如头部受伤标准 (HIC).
- 现有的聚乙 (PVB) 层状玻璃模型,像PLC模型一样,在计算上可能很昂贵.
研究的目的:
- 开发和验证一个有效的等效模型,用于聚乙烯 (PVB) 层玻璃.
- 准确模拟行人与电车的头部撞击场景,专注于头部伤害标准 (HIC) 预测.
- 为了降低与模拟冲击期间的层状玻璃行为相关的计算成本.
主要方法:
- 钢化玻璃和PVB薄膜的材料性能通过四点曲和拉伸测试来确定.
- 通过将层属性和几何图形映射到外元素集成点,创建了一个相当的模型.
- 拟议模型的模拟结果与传统的PLC模型和实验动态头部撞击测试数据进行了比较.
主要成果:
- 相当的模型在模拟PVB层玻璃在头部撞击时的碰撞行为方面表现出了很高的准确性.
- 模拟结果与动态头部撞击测试和传统PLC模型的结果非常相匹配.
- 相当模型的计算成本被降低到传统的PLC模型的15%左右.
结论:
- 开发的同等模型提供了一个计算效率高,准确的方法来模拟用PVB层玻璃模拟行人头部撞击.
- 这种方法为分析电车与行人碰撞的头部伤害标准 (HIC) 提供了可行的替代方案.
- 该研究强调了在不损害模拟准确度的情况下,在分析时间和资源方面大大节省潜力.
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