| ZOU Long-qing,HUANG Cong-cong,FU Hai-long,WANG Yue.Metal-Rubber Rigid Soft Contact Analysis Based on Gaussian Rough Surface[J],50(10):255-262 |
| Metal-Rubber Rigid Soft Contact Analysis Based on Gaussian Rough Surface |
| Received:November 30, 2020 Revised:April 13, 2021 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.10.025 |
| KeyWord:rough surface reconstruction rigid and soft contact contact area contact state wear rubber |
| Author | Institution |
| ZOU Long-qing |
College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing , China |
| HUANG Cong-cong |
College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing , China |
| FU Hai-long |
College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing , China;Bohai Rim Energy Research Institute, Northeast Petroleum University, Qinhuangdao , China |
| WANG Yue |
College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing , China |
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| Abstract: |
| The purpose of this study is to establish the relationship between the macroscopic contact area and the microscopic contact state through the reconstruction of the rough peak coordinate point cloud of the metal-rubber microcontact surface. Based on the autocorrelation function and Gaussian distribution function of rough surface, the data point cloud coordinates of rubber-metal rough contact surface were obtained. ANSYS APDL method was used to establish the metal-rubber contact model, and the reliability of the model was determined through the finite element contact analysis of Ra is 1.6 μm and 3.2 μm, two surface roughness and four contact situations. The contact area of the rough surface reconstructed by the data point cloud increased non-linearly with the increase of external load. When the load was small, the contact area increased by about 6% when the external load increases by 0.1 MPa. When the load was large, the contact area increased by about 1.5% when the external load increased by 0.1 MPa. In the contact state, the slippage accounted for about 12%, and the near field and adhesion showed a completely opposite trend. With the increase of external load, the real contact area of the interface increases nonlinearly. Under the same load, the real contact area decreases with the increase of surface roughness. With the increase of external load, the contact state between interfaces changed from near-field contact to adhesive contact. Contact area and adhesion state are the determining factors of the distribution range and size of interfacial wear particles, which is of great significance to accurately describe the load transfer and subsequent wear process. According to the stress distribution and deformation of rubber surface, it is explained that the adhesive contact state causes the rubber side of the micro-bulge to fall off into wear particles, and it is proved that abrasive wear is the main wear form of rigid and flexible contact interface. |
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