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悬置系统用于连接车身和发动机,是隔离振动的重要元件。橡胶材料作为减振器的弹性主体,针对其非线性振动特性分析已是汽车悬置系统研究的重要课题。橡胶的粘—弹性使橡胶悬置具有非线性,本试验通过MTS电液伺服加载系统完成对前、后悬置块不同加载阶段静刚度的测量,结合试验频响函数测量技术,对其动态特性试验测量技术进行研究。结果表明该方案可有效降低材料非线性影响,提高动态特性识别准确度。同时可得橡胶悬置阻尼也具有非线性。
Suspension system is used to connect the body and the engine, is an important component of vibration isolation. As the elastic body of shock absorber, rubber material has been an important subject in the research of automobile suspension system for the analysis of its nonlinear vibration characteristics. Rubber viscoelasticity makes the rubber suspension non-linear. In this experiment, the static stiffness of the front suspension block and the rear suspension block at different loading stages was measured by MTS electro-hydraulic servo loading system. Combined with the experimental frequency response function measurement technique, the dynamic characteristics Experimental measurement techniques for research. The results show that this scheme can effectively reduce the nonlinear effect of materials and improve the accuracy of dynamic characteristic identification. At the same time available rubber suspension damping is also non-linear.