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基于对压电复合材料层合结构弱界面弹性场、电场、温度场的宏观和细观尺度分析,构建了四种界面力-电-热模型,分别为非耦合型、耦合型和混合型。依据这些界面模型,得到了柱面弯曲简支压电复合材料层板的力-电-热多场耦合解。结果表明,损伤界面的多场耦合物理描述介于宏观和细观尺度之间,需要多尺度考虑,且基于不同尺度的描述也可获得相似的规律。在热载和力载下,不同的界面模型对弹性场影响趋同、差异甚小,而对电场和温度场,四种模型的影响各异、但规律相似;在电载作用下,不同的界面模型无论对弹性场还是电场,都有显著的影响。
Based on the macroscopic and meso-scale analysis of the elastic, electric and temperature fields of the weak interface of piezoelectric composite laminates, four kinds of interfacial force-electrothermal-thermal models are established, which are non-coupled, coupled and mixed. According to these interface models, the force-electricity-heat multi-field coupled solution of the cylindrical bending simply supported piezoelectric composite laminates has been obtained. The results show that the multi-field coupling physical description of the damage interface is between the macroscopic and the mesoscopic scale, which requires multi-scale consideration, and similar rules can be obtained based on the description of different scales. Under the condition of thermal loading and force loading, the influence of different interface models on the elastic field converges with little difference, while the influence on electric field and temperature field are different, but the laws are similar. Under the electric load, different interfaces The model has a significant effect both on elastic field and electric field.