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首页> 外文会议>Second International Symposium on Adhesive Joints: Formation, Characteristics and Testing Vol.2 May 22-24, 2000 Newark, New Jersey >Three-dimensional finite element analysis of stress response in adhesive scarf joints subjected to impact tensile loads
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Three-dimensional finite element analysis of stress response in adhesive scarf joints subjected to impact tensile loads

机译：冲击拉力作用下的丝巾接缝应力响应的三维有限元分析

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摘要

The stress wave propagation and the stress distribution in adhesive scarf joints of similar adherends subjected to impact tensile loads are analyzed in an elastic deformation using a three-dimensional finite-element method (FEM). An impact load is applied to the joint by dropping a weight. The upper end of the upper adherend is fixed and the lower end of the lower adherend is subjected to an impact load. FEM code employed is DYNA3D. The effects of scarf angle of the adherends, the adhesive thickness and Young's modulus of the adherends on the stress wave propagation at the interfaces are examined. It is found that the maximum value of the maximum principal stress σ_1 occurs at the interface of the lower adherend to which the impact load is applied. The effect of the adhesive thickness was found to be small on the maximum value of σ_1 in this joint. The maximum principal stress at the interface increases as Young's modulus of adherends increases. In addition, experiments were carried out to measure the strain response of the adhesive scarf joints subjected to impact tensile loads using strain gauges. A fairly good agreement is observed between the analytical and the experimental results.
机译：使用三维有限元方法（FEM）在弹性变形中分析了相似的被粘物在冲击拉伸载荷下的应力波传播和应力分布。通过减轻重量将冲击载荷施加到接头上。上粘附体的上端是固定的，下粘附体的下端是承受冲击载荷的。使用的FEM代码为DYNA3D。研究了被粘物的斜角，粘着剂的厚度和杨氏模量对应力波在界面处传播的影响。发现最大主应力σ_1的最大值出现在施加冲击负荷的下被粘物的界面处。发现粘合剂厚度对该接头中σ_1的最大值的影响很小。随着被粘物的杨氏模量增加，界面处的最大主应力增加。另外，进行了实验以使用应变仪测量经受冲击拉伸载荷的粘合围巾接头的应变响应。在分析结果和实验结果之间观察到相当不错的协议。

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