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Yang Guang
Hu Xulin
Dong Xiaogang
Han Xiuqing
Department of Basic Sciences,
Changchun University of Technology,
Changchun 130012, China |
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AFFECTION OF ER FLUID ON
STIFFNESS OF VIBRATION SYSTEM
Abstract: On the application of an electric field, the mechanical properties of ER(Electro-rheological) fluid are very complex. The damping force of ER fluid is linear without electric field and is nonlinear when an electric field is applied. By increasing the strength of the electric field, the behavior of ER fluid changes from linear viscous to nonlinear viscoelastic-plastic. External electric fluid changes natural behavior of system with ER fluid besides the mechanical properties of ER fluid. The affect of ER fluid on the stiffness of nonlinear vibration system with ER dampers is analyzed by iterative per-turbation method. The results show that the stiffness of structure would be increased with growing of the strength of the electric field.
Key words:
Fluid Vibration system Stiffness Iterative perturbation |