| 低温和频率对橡胶弹性元件刚度性能的影响 |
| Influence of Low Temperature and Frequency on Stiffness of Rubber Elastic Components |
| 投稿时间：2019-07-16 修订日期：2019-07-16 |
| DOI：10.12136/j.issn.1000-890X.2020.05.0323 |
| 中文关键词: 橡胶弹性元件 低温 频率 静刚度 动刚度 |
| 英文关键词: rubber elastic components low temperature frequency static stiffness dynamic stiffness |
| 基金项目:国家重点研发计划项目（2018YFF0215602） |
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| 中文摘要: |
| 介绍橡胶弹性元件静刚度和动刚度的测试原理，设计一种新型低温刚度试验工装以对橡胶弹性元件进行静态和模态试验，研究温度对橡胶弹性元件静刚度和动刚度的影响，以及频率对橡胶弹性元件动刚度的影响。结果表明：本试验工装结构合理，满足试验要求，随着温度的降低，橡胶弹性元件静刚度和动刚度增大；随着频率的增大，橡胶弹性元
件的动刚度在低频段增大，在一定频率后变小，最后趋于稳定；温度低于－40 ℃时橡胶弹性元件的动刚度-频率曲线的变化拐点前移。 |
| 英文摘要: |
| The test principle of the static and dynamic stiffness of rubber elastic components was introduced，and a new type of low temperature stiffness test fixture was designed to carry out static and modal tests on rubber elastic components. The effect of temperature on the static and dynamic stiffness of rubber elastic components was investigated，and the effect of frequency on the dynamic stiffness was also studied.The results showed that the structure of the test fixture met the test requirements. When the temperature decreased，the static and dynamic stiffness of rubber elastic components increased. When the frequency increased，the dynamic stiffness of rubber elastic components increased in the low frequency band，and beyond certain frequency the dynamic stiffness decreased and finally tended to be stable. The turning point of the dynamic stiffness-frequency curve moved toward the low frequency direction when the temperature decreased beyond －40 ℃. |
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