| XU Zhong,WANG Yue-feng,ZHONG Qiang,WANG Lei,XU Wen-ji.Analysis and Characterization of Three-dimensional Multi-asperity Coatings Equivalent Stress[J],39(5):35-38,44 |
| Analysis and Characterization of Three-dimensional Multi-asperity Coatings Equivalent Stress |
| Received:June 20, 2010 Revised:October 10, 2010 |
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| DOI： |
| KeyWord:asperity equivalent Von Mises stress finite element method coating |
| Author | Institution |
| XU Zhong |
School of Mechanical Engineering, Dalian University of Technology, Dalian , China |
| WANG Yue-feng |
School of Mechanical Engineering, Dalian University of Technology, Dalian , China |
| ZHONG Qiang |
School of Mechanical Engineering, Dalian University of Technology, Dalian , China |
| WANG Lei |
School of Mechanical Engineering, Dalian University of Technology, Dalian , China |
| XU Wen-ji |
School of Mechanical Engineering, Dalian University of Technology, Dalian , China |
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| Abstract: |
| A finite element method was applied to establish elastic two-dimensional and three-dimensional contact model between rigid surface and asperity on the coating surface. The influences of elastic modulus ratio, coating thickness, spacing of asperity and indentation depth on the stress distribution and total deformation on asperity and coating/substrate interface were revealed. The results show that the influence of indentation depth is greatest on the peck value of equivalent stress. The influence of coating thickness,elastic modulus ratio, spacing of asperity decreases gradually.It is found that the smaller the elastic modulus ratio,indentation depth, spacing of asperity and the larger the coating thickness, the smaller the peck value of equivalent stress. |
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