摘要
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 。
Combining the microstructure and the interaction between two particles in an electrorheological fluid that is calculated by the modified dipole model and the conductivity model respectively, the shear stress strain relationships of the electrorheological fluid were set up. On this basis, and considering the fracture and reconfiguration process in the post yield state of this material, its dynamic yield stress was obtained. The calculation indicates that the dynamic yield stress lower than static yield stress by about 25%. In addition, the dynamic yield stress of the electrorheological fluid increases nearly linearly with the volume fraction at the small volume fraction and gets their maximums at rather large volume fractions, 0.4～0.5.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2000年第1期11-14,共4页
Acta Materiae Compositae Sinica
基金
国家自然科学基金!( 5 983 2 0 90 )
国防预研基金
关键词
电流变液
动态屈服应力
微观结构
electrorheological fluid
dynamic yield stress
microstructure
