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| Research on liner buckling and collapse of bi-material metal pipes subjected to mechanical-thermal loading |
| Received:February 25, 2019 Revised:June 19, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190225002 |
| KeyWord:bi-material metal pipe numerical model mechanical-thermal loading material softening buckling |
| Author | Institution |
| 郭奕蓉 |
西安交通大学 航天航空学院 机械结构强度与振动国家重点实验室, 西安 ;上海电气风电集团有限公司, 上海 |
| 张建勋 |
西安交通大学 航天航空学院 机械结构强度与振动国家重点实验室, 西安 |
| 谭丁森 |
西安交通大学 航天航空学院 机械结构强度与振动国家重点实验室, 西安 |
| 徐自力 |
西安交通大学 航天航空学院 机械结构强度与振动国家重点实验室, 西安 |
| 秦庆华 |
西安交通大学 航天航空学院 机械结构强度与振动国家重点实验室, 西安 |
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| Abstract: |
| In this paper,liner buckling and collapse of bi-material metal pipes subjected to mechanical-thermal loading were studied by using the finite element method.A 3-D finite element model was developed by considering the residual stress produced in the quasi-static inflation process of the bi-material metal pipes.Effects of temperature and internal pressure on the liner buckling and collapse of the bi-material metal pipes were analyzed in detail.The results show that the liner buckling and collapse of bi-material metal pipe is suppressed under mechanical-thermal loading due to their material softening.The curvature of the maximum bending moment of bi-material metal pipes subjected to the bending,internal pressure and thermal loading decreases with decreasing the internal temperature while both the load-carrying capability of the bi-material metal pipes and the ellipticity of outer pipes increases.The internal pressure changes have a little effect on the load-carrying capability of bi-material metal pipes and the ellipticity of outer pipes. |