橡胶隔振器非线性动态特性建模及实验研究  

Dynamic modeling and test for a nonlinear rubber damper

作　　者：孙伟[1] 李以农[1] 刘万里[1,2] 郑玲[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]重庆车辆检测研究院,重庆401122

出　　处：《振动与冲击》2012年第23期71-76,共6页Journal of Vibration and Shock

摘　　要：针对某精密仪器的橡胶隔振器(以下简称隔振器)进行了动态特性研究。通过对橡胶超弹性材料进行有限元建模分析,得到隔振器的硬非线性刚度特性,并以此特性为基础提出了隔振器非线性动力学模型的建立及求解方法,仿真计算了隔振器动态响应并对所设计的隔振器进行了实验研究。实验结果不仅说明所设计的隔振器具有良好的隔振缓冲能力,而且验证了隔振器非线性动力学模型的正确性及有效性,为进一步研究隔振器及承载设备的工作状况提供了基础。The dynamic behavior of a rubber damper deployed in a precision instrument was investigated here. The nonlinear stiffness characteristics of the damper were obtained through hyperelastic rubber analysis with FE method, and thus its nonlinear dynamic model was built. Combining with harmonic balance method and vector solution, the dynamic characteristics of the damper were calculated. On the other side, a series of tests were conducted, the test results agreed with the simulated ones. It was indicated that the nonlinear model of the rubber damper is effective and provides a foundation for further analysis of the damper behavior and the response of the corresponding precision instrument.

关 键 词：橡胶隔振器 非线性 动态特性 谐波平衡法 冲击响应谱 

分 类 号：TB123[理学—工程力学] V216.21[理学—力学]