分别考虑多偶极子相互作用和电导模型中多颗粒的相互作用 ,结合电流变液的微观结构 ,得出了电流变液的应力 -应变关系。由材料屈服后的断裂恢复过程 ,得到了两种模型的动态屈服应力。计算表明 ,动态屈服应力比静态屈服应力约小 2 5 %左右 ,且随体积比增大而增大 Considering multi-dipole interaction and multi-particle interaction in the conductance model respectively, the stress-strain relationship of electrorheological fluid is obtained by combining the microstructure of ER fluid. The dynamic yield stress of the two models is obtained from the fracture recovery process after yielding. The calculation shows that the dynamic yield stress is about 25% less than the static yield stress, and increases with the volume ratio