| Research on Three-dimensional Stiffness of Wedge-shaped Rubber Shock Absorber Based on Orthogonal Experiment |
| Received:June 15, 2021 Revised:June 15, 2021 |
| DOI：10.12136/j.issn.1000-890X.2022.04.0268 |
| Key Words: wedge-shaped rubber shock absorber；three-dimensional stiffness；finite element model；constitutive model；orthogonal experiment；Shore A hardness |
| Author Name | Affiliation | E-mail | | SUN Yi | Qingdao University of Science and Technology | 1157961601@qq.com | | LI Jiawei | Qingdao University of Science and Technology | | | Jiang Xiaoyan | Qingdao Aotai Traffic Equipment Co.，Ltd | | | HUANG Jing* | Qingdao University of Science and Technology | lhjqust@163.com | | ZENG Xiankui | Qingdao University of Science and Technology | | | JIAN Ranran | Qingdao University of Science and Technology | | | HU Xufeng | Qingdao Lujinyuan Security Technology Co.，Ltd | |
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| Abstract: |
| The three-dimensional model of the wedge-shaped rubber shock absorber was established through Solidwords software，the stress-strain curve of the rubber material（natural rubber compound） was obtained through uniaxial compression test，and the Mooney-Rivlin model was determined as the constitutive model of rubber material by comparing the finite element simulation results with the test results.The Shore A hardness of rubber material，thickness of rubber layer，inclination angle of rubber layer and number of steel plates were used as variable factors for orthogonal experiment，and their influences on the three-dimensional stiffness of wedge-shaped rubber shock absorber were studied.The results showed that with the increase of Shore A hardness of rubber material and inclination angle of rubber layer，the axial and longitudinal stiffness of wedge-shaped rubber shock absorber first increased and then decreased.With the increase of the thickness of the rubber layer，the axial and longitudinal stiffness of the shock absorber decreased.With the increase of the number of steel plates，the axial and longitudinal stiffness of the shock absorber increased.These four variable factors had little effect on the lateral stiffness of the shock absorber.The shore A hardness of rubber material，thickness of rubber layer，inclination angle of rubber layer and number of steel plates meeting the three-dimensional allowable stiffness of the rubber shock absorber at the same time were more than 66 degrees，30～35 mm，64°～67° and 1-2 respectively. |
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