| 载荷因素对橡胶减震器动静态性能影响的研究 |
| Influence of Load Factors on Dynamic and Static Performance of Rubber Shock Absorber |
| 投稿时间：2017-10-20 修订日期：2017-10-20 |
| DOI： |
| 中文关键词: 橡胶减震器 预位移和振幅 加载频率 电镜扫描 动静态性能 |
| 英文关键词: rubber shock absorber pre-displacement and amplitude loading frequency electron microscopy scanning dynamic and static performance |
| 基金项目:山东省自然科学基金资助项目（ZR2014EMM018） |
|
| 摘要点击次数: 864 |
| 全文下载次数: 365 |
| 中文摘要: |
| 对动车组橡胶地板减震器进行了不同加载条件的疲劳试验，并将疲劳破坏后的试样切片进行电镜扫描，从性能变化和微观形态两方面分析其动静态性能变化。结果表明，随着频率以及预位移和振幅的增大，减震器静刚度、动刚度、储能模量、损耗模量以及阻尼系数等指标均有很大程度地降低，且降幅随载荷增幅的增大而增大，其中频率的影响最为显著；从电镜扫描结果看出，破坏后的试样裂纹处的橡胶材料由颗粒状转变为粘流状，并且有柱状物析出。 |
| 英文摘要: |
| The fatigue tests of high-speed train rubber floor shock absorbers under different loading conditions were carried out and the specimens were subjected to electron microscopy，the changes of dynamic and static performance were analyzed from the aspects of performance change and microcosmic morphology.The results showed that the static stiffness，dynamic stiffness，storage modulus，loss modulus and damping coefficient were all greatly reduced with the increase of frequencys and pre-displacement and amplitude.The larger the increase of the load，the faster the decrease of the above parameters，and the effect of frequency was the most significant.As a result of scanning electron microscopy it was seen that the rubber material at the crack of the cracked sample was changed from granular to viscous and the column was precipitated. |
|
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
