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压电复合材料层合结构界面缺陷的物理描述呈现出多场耦合现象。界面弹性场由位移跃变与横向应力的关系来描述;界面温度场由温度跃变与横向位移跃变的经验公式来描述;界面电场分别由电可导通假设、电不可导通假设和电半可导通假设来描述,获取了界面位移、温度和电势跃变的线性表达。基于这些界面假设,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。算例表明,不同的界面电学假设对弹性场的影响有限,对电场的影响显著,其中电不可导通假设在各种载荷下均产生最大的界面电势跃变。算例提供的数值结果可作为后续研究比较之用。
The physical description of the interfacial defects in piezoelectric composite laminates presents a couple of coupling phenomena. The interfacial elastic field is described by the relationship between displacement jump and lateral stress. The interface temperature field is described by the empirical formula of temperature jump and lateral displacement transition. The interface electric field is described by electric conduction hypothesis, electric non-conduction hypothesis and electricity Semi-conductive hypothesis to describe, access to the interface displacement, temperature and potential changes in the linear expression. Based on these interface assumptions, the force-electricity-heat multi-field coupling solution of the cylindrically curved simply supported piezoelectric composite laminates has been obtained. The examples show that the influence of different interface electric assumptions on the elastic field is limited and the influence on the electric field is significant. In the case of electrically non-conducting, the maximum interfacial potential jumps are assumed under various loads. Numerical examples provided by the numerical examples can be used as a follow-up comparison.