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Influence of the axial position of the external load on the mechanical behavior of the bolted lap joint with different materials

机译：外部负荷轴向位置对不同材料螺栓圈关节力的影响

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摘要

The axial mechanical behaviors of the bolted joint are a primary concern of the bolted joint structures. The axial load position has obvious influence on the axial mechanical behaviors of the bolted joint with different materials, while it can not be considered by the analytical method yet. The objective of this work is to fill this gap. With the pressure cone assumption, the axial resilience of the stress zones is derived, and the detailed formulation of the load introduction factor is proposed. The mechanical behavior of the bolted joint subjected to external axial load is formulated and compared with finite element analysis. Results show that the distance between load planes has apparent influence on the axial mechanical behaviors of the bolted joint. In particular for the bolted joint with different materials, the axial positions of the external load have obvious effect on the mechanical behavior. Comparisons with the finite element results indicate that with the proposed formulation of load introduction factor, the analytical formulations could predict the mechanical behavior of the bolted joint with different materials accurately. The proposed formulation of load introduction factor in this work could be an effective supplement of the heavy duty bolt design guideline.
机译：螺栓接头的轴向力学行为是螺栓连接结构的主要关注点。轴向载荷位置对具有不同材料的螺栓接头的轴向力学行为具有明显影响，而分析方法尚不考虑。这项工作的目标是填补这个差距。通过压力锥假设，推导出应力区域的轴向弹性，提出了负载引入因子的详细配方。与外部轴向载荷进行外轴载荷的螺栓连接的力学行为，并与有限元分析进行比较。结果表明，负载平面之间的距离对螺栓接头的轴向机械行为具有明显的影响。特别是对于具有不同材料的螺栓连接，外部负荷的轴向位置对机械行为具有明显的影响。具有有限元结果的比较表明，随着载荷引入因子的提出的制剂，分析制剂可以准确地预测螺栓接头与不同材料的机械行为。该工作中提出的负荷引入因素的制定可能是重型螺栓设计指南的有效补充。

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