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| Dynamic modeling for the impact of control rod drive mechanism under step loads |
| Received:February 05, 2016 Revised:May 24, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201703001 |
| KeyWord:control rod drive mechanism rigid-flexible coupling contact-impact penalty method numerical simulation |
| Author | Institution |
| 陈成 |
上海交通大学 船舶海洋与建筑工程学院 工程力学系, 上海 |
| 刘锦阳 |
上海交通大学 船舶海洋与建筑工程学院 工程力学系, 上海 |
| 许艳涛 |
国家核电技术公司上海核工程研究设计院, 上海 |
| 谢永诚 |
国家核电技术公司上海核工程研究设计院, 上海 |
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| Abstract: |
| Under step loads,contact-impact may occur between the pole and housing of the control rod drive mechanism.Based on the formulation in the floating frame of reference discretized equations of motion for the rigid-flexible coupled structure are derived,and penalty method is used for calculating the impact force and the stress distribution of the housing.Compared with the finite element method,the rigid-flexible coupling method can greatly improve the computational efficiency while maintaining the same accuracy.Furthermore,in order to reduce the number of finite elements used,the finite element mesh size of different regions of the structure is analyzed quantitatively.The conclusion can provide a good guideline for contact-impact analysis in engineering. |