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针对磁流变阻尼器漏液问题,提出运用粘弹性材料对磁流变阻尼器端口进行硫化固接,以静态密封取代传统的动态密封,从根本上解决漏液问题。考虑粘弹性材料相对较软而产生凸变形,分析了凸变形对阻尼力影响,引入磁流变阻尼力修正系数,之后推导粘弹性材料挠度曲线。结合平板理论以及粘弹性材料的等效刚度模型,建立了新型磁流变阻尼器的力学模型。将理论计算挠度曲线结果与有限元分析结果进行了比较,验证了挠度曲线的正确性,并通过算例说明所建立的力学模型可以反映粘弹性材料与磁流变液的流固耦合作用,较好地模拟新型磁流变阻尼器的动力特性。
Aiming at the problem of leakage of magnetorheological damper, a viscoelastic material is proposed to vulcanize and fix the port of magnetorheological damper, and the static seal can replace the traditional dynamic seal to solve the leakage problem fundamentally. Considering that the viscoelastic material is relatively soft and has convex deformation, the influence of convex deformation on damping force is analyzed, and the correction coefficient of MRF is introduced. Then, the deflection curve of viscoelastic material is deduced. Based on the theory of flat plate and the equivalent stiffness model of viscoelastic material, a mechanical model of a new type of MR damper is established. The results of theoretical calculation of deflection curves are compared with the results of finite element analysis, and the correctness of deflection curves is verified. The calculation results show that the established mechanical model can reflect the fluid-solid interaction of viscoelastic materials and magnetorheological fluids. Good simulation of the dynamic characteristics of the new magnetorheological damper.