高温对单搭接接头强度的影响

对不同温度下单搭接接头进行拉伸试验,对比不同温度对接头强度的影响。结果表明,温度越

高,接头强度越低,同时,随着温度的升高,胶层的破坏模式也发生变化。通过有限元数值仿真,模拟不同温度

下胶层表面上等效应力的分布情况,得出温度越高,胶层热应力越大,接头强度越低等结论。

Influences of High Temperature on Strength ofAdhesively Bonded Single Lap Joints

In order to explore the strength of the structure with lap joints, the adhesively bonded single lap joints

with differential temperature were tested in tension loading which creates shear across the bondline. The equivalent

stress was obtained through finite element analysis to define the effect of temperature, which helped to get the conclusions

that the higher of the temperature, the bigger of the thermal stress and thermal stress value and the stronger of

the adhesive strength. Then, the failure modest of the adhesive varioused with the increasing of the temperature.