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Optimizing Crash Box Design for Enhanced Vehicle Crashworthiness: A Study on Screw-in-the-Groove Mechanism and Al5052 Material Thickness Variations
参考中译:优化碰撞盒设计以提高车辆耐撞性：螺旋槽机构和Al 5052材料厚度变化的研究


          

刊名：International Journal of Vehicle Structures and Systems
作者：R. Teddy Samuel（Dept. of Automobile Engg., Hindustan Inst. of Tech. & Sci.）
M. Jaikumar（Dept. of Automobile Engg., Hindustan Inst. of Tech. & Sci.）
S. K. Vignesh（Dept. of Automobile Engg., Hindustan Inst. of Tech. & Sci.）
Felix Bentgens（Inst. for Automotive Tech., Trier University of Applied Sci.）
刊号：873HA008/I
ISSN：0975-3060
出版年：2024
年卷期：2024, vol.16, no.5
页码：708-713
总页数：6
分类号：U46
关键词：Crashworthiness；Hypermesh；LS dyna profile；Al5052；Crash box plate
参考中译：耐撞性; Hypermesh; LS动力剖面; Al 5052;碰撞箱板
语种：eng
文摘：This paper delves into the realm of crashworthiness, a critical aspect of vehicle design aimed at enhancing occupant protection and minimizing fatalities and vehicle damage. The study focuses on the force required for a single screw in a crash box, employing a unique screw-in-the-groove mechanism and varying thicknesses of Al5052 material. The investigation utilizes Hypermesh in LS Dyna Profile to simulate low-speed crash scenarios, providing valuable insights into the rupture dynamics. In this research initiative, chosen crash box plates were selected for simulation, exploring and substantiating the innovative concept, specifically focusing on validating the optimized thickness as part of our primary research efforts. The crumple bar assembly incorporates a longitudinally oriented groove situated in the central section of the crash box plate. Within this groove, a latitudinal fixed screw with precise dimensions and locking mechanisms was housed. The simulation parameters are defined with an impact velocity of 15 km/h and a 350 kg mass acting on the screw in the groove of the crash box plates. A meticulously optimized criterion ensures that the screw's travel distance remains below 130mm during the simulation. The model setup includes pre-calculations, pre-simulation for groove stamping, stamp geometry and crash simulation. The Standard Vehicle Testing Procedure was followed in accordance with the Research Council for Automobile Repairs. Results from the simulation for thicknesses of 2, 2.5, 3, 3.5 and 4 mm were systematically analysed. The findings reveal a nuanced relationship between thickness and the performance metrics such as displacement and internal energy absorption.
参考中译：本文探讨了耐撞性领域，这是车辆设计的一个关键方面，旨在加强对乘客的保护并最大限度地减少死亡和车辆损坏。该研究的重点是碰撞盒中单个螺丝所需的力，采用独特的螺旋槽机构和不同厚度的Al 5052材料。该调查利用LS Dyna Profile中的Hypermesh来模拟低速碰撞场景，为破裂动力学提供有价值的见解。在这项研究计划中，选择了选定的碰撞盒板进行模拟、探索和证实创新概念，特别侧重于验证优化的厚度，作为我们主要研究工作的一部分。抗压杆组件包含位于碰撞箱板中心部分的纵向凹槽。在这个凹槽内，装有一个具有精确尺寸和锁定机构的纬向固定螺丝。模拟参数定义为15 km/h的冲击速度和作用在碰撞箱板凹槽中的螺丝上的350 kg质量。精心优化的标准确保在模拟过程中螺丝的行程距离保持在130 mm以下。模型设置包括预计算、凹槽冲压预模拟、印章几何形状和碰撞模拟。根据汽车维修研究委员会的规定，遵循标准车辆测试程序。系统分析了2、2.5、3、3.5和4 mm厚度的模拟结果。研究结果揭示了厚度与位移和内部能量吸收等性能指标之间的微妙关系。



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