橡胶减振器动刚度有限元数值预测方法研究

A New Prediction Method of Dynamic Stiffness for the Rubber Isolator Based on Finite Element Analysis

摘要: 提出了一种基于有限元的橡胶减振器动刚度预测方法,对方法中的材料本构模型、有限元模型、动刚度预测流程进行了分析和研究。利用此方法对某惯导减振器进行预测,获得减振器动刚度和阻尼值,代入单自由度分析模型后预报出的动响应结果与试验结果基本一致。用该方法能捕捉到由于减振器刚度变化而引入的高频率共振峰,表明该方法具有更高的精度。
- 橡胶减振器 /
- 动刚度 /
- 预测方法 /
- 有限元
Abstract: A new prediction method of dynamic stiffness for the rubber isolator based on the finite element methodwas proposed. The relevant constitutive relationship model, finite element model and prediction process for dynamicstiffness were studied. A rubber isolator prediction for an IMU was performed, and the dynamic stiffness and damping values were thus obtained. The present stiffness and damping values were applied to a single freedom dynamicresponse analysis, the analysis results of dynamic response are consistent with the testing results. Moreover, thehigh frequency resonance due to dynamic stiffness changes can be calculated during the middle and high frequencyby using the stiffness prediction method, which indicates the method has higher calculation precision comparingwith traditional prediction methods of static stiffness.
- rubber isolator /
- dynamic stiffness /
- prediction method /
- FEA

[1]	朱石坚, 楼京俊, 何其伟等. 振动理论与隔振技术[M]. 北京:国防工业出版社, 2006
[2]	Harris C M, Crede C E. Shock and Vibration Handbook (5 th edition) [M]. NewYork: McGRAW-HILL Book Company, 2002
[3]	陈莲, 周海亭. 计算橡胶隔振器静态特性的数值分析方法[J].振动与冲击, 2005, 24(3): 120～123
[4]	Treloar L R G. 橡胶弹性物理学[M]. 北京: 化学工业出版社，1982
[5]	Yeoh O H. Characterization of elastic properties of carbon-blackfilled rubber vulcanizates[J]. Rubber Chemistry and Technology, 1990, 63: 792～805
[6]	Gil-Negrete N, Vinolas J, Kari L. A simplified methodology to predict the dynamic stiffness of carbon-black filled rubber isolators using finite element code[J]. Journal of Sound and Vibration，2006, 296: 757～776
[7]	韩增尧. 复杂航天器声振力学环境预示技术研究[D]. 北京:中国空间技术研究院, 2000
[8]	MSC. Software Corporation. Adavanced Dynamic Analysis User's Guide[M]. Santa Ana, USA, 2005