中文摘要：

针对复合材料层合板与斜削金属材料板双搭两钉连接接头,基于有限元分析软件ANSYS技术平台,对7种不同几何参数的连接接头钉载比例进行计算分析,探讨螺栓直径配置及金属板厚度对钉载分配的影响。结果表明,降低靠近层合板加载端螺栓直径有助于改善钉载分配,而提高或降低远离加载端的螺栓直径均无益改善钉载分配,降低接头金属连接板非斜削端厚度有助于优化钉载分配;另对上述接头中等直径螺栓连接的斜削形式和等厚度搭接形式接头进行的损伤累积仿真模拟及静拉伸极限强度计算表明,斜削搭接形式下层合板各角度铺层初始损伤载荷及接头整体最终失效载荷值均高于等厚度搭接,且计算发现,在极限载荷水平下,斜削接头持续保持较等厚度搭接接头钉载分配方面的优势,得出其连接强度的提高与它载荷分配优势从加载初持续到最终失效是分不开的结论。

英文摘要：

As to two bolts double lap joints connecting composite laminates with beveled metal plates, the pin load distributions of seven joints of different geometric parameters are calculated and analyzed based on the finite element software ANSYS. The effect of bolt diameters and metal plate thickness on pin load distribution is researched, results show that reducing the diameter of bolt near the loading end and metal plate thickness of non beveled side is good for improving the pin load ratio, whereas increasing or reducing the diameter of bolt away from the loading end is both helpless for optimizing pin load distribution. The simulation of damage accumulation and calculated ultimate strength under static tension load for equal diameter bolted joints above used beveled metal plates and equal thickness ones show that the initial damage load of each laminate layer and joint failure load in beveled lap joints are all higher than that in equal thickness lap joint. And calculation show that above beveled joint can sustain pin load distribution superior to the equal thickness joint under ultimate failure load, then conclusion that the former have higher joining strength depending on its pin load distribution advantage keeping from initial load to final failure is obtained.