碳纤维增强环氧树脂复合材料与铝板胶螺混合连接接头失效仿真

基于商用有限元软件ABAQUS，建立了碳纤维增强环氧树脂复合材料（CFRP）层合板和铝板双搭接胶螺混合连接接头强度预测模型，并进行了仿真分析，同时与试验结果进行对比，探究了此类混合接头在拉伸载荷工况下的失效形式和承载能力。结果表明，拉伸加载过程中，螺栓通过分担部分载荷加强了胶接连接。混合接头的失效形式先表现为胶层的断裂失效，最终表现为层合板孔边挤压失效。利用模型预测的接头承载能力与试验结果的误差为9.7%，具有较好的吻合性。该分析方法能够为复合材料-金属胶螺混合连接的分析和设计提供一定的参考。 

Failure simulation of carbon fiber reinforced epoxy resin composite-aluminum bonded-bolted hybrid joint

Based on the software ABAQUS, the strength prediction model of carbon fiber reinforced polymer(CFRP)-aluminum bonded-bolted hybrid double-lap joint was built and simulation analysis was carried out. Comparing with the test result, the failure modes and the carrying capacity of the joint were studied under the tensile load condition. It is shown that the adhesive joint can be reinforced with the load-sharing of the bolt. The hybrid joint firstly suffers the fracture failure of the adhesive and reaches the final failure when the bearing failure appears near the hole. The carrying capacity of the joint predicted by the model has the error value of 9.7%, which illustrates good consistency with the test result. This method can offer some references for the analysis and design of the composite-metal bonded-bolted hybrid joints.