Adhesively bonded high strength steel axial crush tube investigation

连接超高强度钢用于汽车结构部件是先进结构胶粘剂的一种具有挑战性的应用，因为这些材料在碰撞场景中可能会遇到侵略性的载荷条件和表面涂层。随着设计向多材料车辆平台发展，以实现显著的重量减轻，这些超高强度钢材料将不可避免地与其他需要创新连接方法的轻质材料进行连接。高韧性结构胶粘剂为连接不同材料和解决多材料组装中的腐蚀等重大问题提供了可行的选择。在车辆结构中采用结构胶粘剂的关键是在车辆设计过程中对这些接头进行建模或分析的能力。这项研究将研究粘结材料的特性和在有限元程序中的实现。物理轴向破碎管测试样品将使用先进的结构粘合剂进行组装，并在碰撞环境中进行准静态和动态测试。结构的数值模型，包括测量的胶粘剂的机械性能，将被用来评估数值建模方法。这项研究将使先进的粘合剂能够在建模环境中实施，以支持粘合剂在设计中的集成和使用，并为实施提供短期解决方案。

Joining ultra-high strength steel for vehicle structural components is a challenging application for advanced structural adhesives due to surface coatings and the aggressive loading conditions these materials may encounter in crash scenarios. As designs move towards multi-material vehicle platforms to achieve significant weight reductions, these ultra-high strength steel materials will invariably be joined with other lightweight materials requiring innovative joining methods. High toughness structural adhesives provide a viable option for joining dissimilar materials and addressing significant issues such as corrosion in multi-material assemblies. Of critical importance to the adoption of structural adhesives in vehicle structures is the ability to model or analyze these joints in the vehicle design process. This study will investigate adhesive material characterization and implementation in a finite element code. Physical axial crush tube test samples will be assembled using advanced structural adhesives and tested quasi-statically and dynamically in a crash environment. Numerical models of the structures including the measured adhesive mechanical properties will be used to assess numerical modeling approaches. This research will enable implementation of advanced adhesives in a modeling environment to support the integration and use of adhesives in designs, and to provide near-term solutions for implementation.