| Influence of Load Factors on Dynamic and Static Performance of Rubber Shock Absorber |
| Received:October 20, 2017 Revised:October 20, 2017 |
| DOI： |
| Key Words: rubber shock absorber；pre-displacement and amplitude；loading frequency；electron microscopy scanning；dynamic and static performance |
| Author Name | Affiliation | E-mail | | ZENG Xian-kui | College of Mechanical and Electrical Engineering,Qingdao University of Science and Technology | zxk1967@163.com | | FENG Han-lin* | College of Mechanical and Electrical Engineering,Qingdao University of Science and Technology | 916095081@qq.com | | BAO Li-ping | College of Mechanical and Electrical Engineering,Qingdao University of Science and Technology | | | GAO Yuan-hao | College of Mechanical and Electrical Engineering,Qingdao University of Science and Technology | |
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| Abstract: |
| 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. |
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