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| Optimization design of deep cavity cylindrical roller based on FEM and RSM |
| Received:March 31, 2014 Revised:June 21, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201503003 |
| KeyWord:deep cavity cylindrical roller FEM contact stress RSM optimization design |
| Author | Institution |
| 张杰 |
西南石油大学 机电工程学院, 成都 |
| 梁政 |
西南石油大学 机电工程学院, 成都 |
| 韩传军 |
西南石油大学 机电工程学院, 成都 |
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| Abstract: |
| In order to eliminate the stress concentration phenomenon of cylindrical roller ends for impro-ving the fatigue life of roller bearing,the shape control parameters of deep cavity were analyzed,such as opening degree k,cavity length l and cavity cone angle α .The finite element contact model of roller was established.Based on response surface method (RSM),the optimization model of deep cavity was established,the minimum of stress difference between roller ends and middle part was chosen as optimal objective,k, l and α as design variables.The response surface model was solved,and a set of optimal solutions were obtained.Compared with other rollers,deep cavity roller can improve the stress concentra-tion effectively.The contact stress distribution of cylindrical roller with optimized deep cavity is more homogenous,which could avoid the premature fatigue failure of roller bearing for local stress is too large.The combination method of FEM and RSM is simple and efficient,which can be used for other mechanical parts. |
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