使用详细的有限元模型对极端负载的腿部反应进行计算评估
Aman Vikram1, Anoop Chawla1, Sudipto Mukherjee1
1Department of Mechanical Engineering, Indian Institute of Technology Delhi, Delhi, India.
概括
这项研究验证了全人类安全模型 (Total Human Model for SafetyTM) 下肢有限元素模型的高压. 该模型准确地预测了下肢对爆炸的反应,这对于了解爆炸伤害至关重要.
科学领域:
- 生物力学 生物力学
- 计算建模计算建模
- 创伤研究研究创伤研究
背景情况:
- 有限元模型对于模拟复杂的生物力学反应至关重要.
- 了解爆炸事件造成的下肢受伤对于军事和平民安全至关重要.
- 现有的模型需要对爆炸场景的实验数据进行验证.
研究的目的:
- 为了评估总人安全模型TM (THUMS) 在高压下下肢有限元素模型的生物真实性.
- 评估模型对反人地雷爆炸的预测能力.
- 调查模型对爆炸威胁参数变化的敏感性.
主要方法:
- 根据实验冲击数据,THUMS下肢模型得到了验证.
- 使用多材料任意拉格朗欧利尔 (M-ALE) 方法进行了冲击负荷模拟.
- 该模型受到爆炸性质量和对峙距离的变化.
主要成果:
- 该模型表现出良好的生物真实性,与撞击器速度为7和9.3 m/s (R=0.86,0.82) 的实验数据相对应得很好.
- 对反人地雷爆炸的模拟显示了对爆炸物质量和位置的显著敏感性.
- 爆炸物质量的增加导致峰值力量的大幅增加和峰值反应时间的缩短.
结论:
- THUMS下肢有限元素模型是模拟爆炸伤害的验证工具.
- 爆炸位置在近场事件中显著影响下肢损伤模式.
- 该模型为伤害机制提供了宝贵的见解,并有助于制定保护策略.
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