| 冷却器在瞬态工况下的温度场与热应力分析 |
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| 引用本文： | 杨志刚,胡振东. 冷却器在瞬态工况下的温度场与热应力分析[J]. 计算机辅助工程, 2013, 22(1): 33-36 |
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| 作者姓名： | 杨志刚 胡振东 |
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| 作者单位： | 1. 上海交通大学机械与动力工程学院,上海,200030
2. 同济大学航空航天与力学学院,上海,200092 |
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| 摘 要： | 针对冷却器在发电厂寿命期内频繁承受热冲击作用而导致设备出现疲劳破坏问题,用ANSYS建立设备管程结构温度场和应力场分析模型,计算瞬变热冲击工况下结构的热应力,并按ASME标准对设备的疲劳强度进行评定.数值仿真结果可明确冷却器裂纹产生的主要原因和部位,为结构的安全性改进提供参考.
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| 关 键 词： | 电厂 冷却器 管程 上联通 瞬态温度场 热应力 疲劳破坏 |
| 收稿时间： | 2012-04-05 |
| 修稿时间： | 2012-05-11 |
Temperature field and thermal stress analysis for cooler under transient working condition |
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| YANG Zhigang and HU Zhendong. Temperature field and thermal stress analysis for cooler under transient working condition[J]. Computer Aided Engineering, 2013, 22(1): 33-36 |
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| Authors: | YANG Zhigang and HU Zhendong |
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| Affiliation: | School of Mechanical Engineering, Shanghai Jiaotong University,- |
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| Abstract: | Fatigue failure problem of cooler induced by the thermal shock during the life time of the power plant was considered. The analytic modeling of temperature and stress field for the tube side of the equipment was established by using the FEM software ANSYS. The transient thermal stress subjected to the thermal shock was calculated and the fatigue strength of the equipment was evaluated according to ASME rules. The origin and location of the crack on the cooler was shown and the direction of design improvement for the structural safety was given through the numerical simulations. |
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| Keywords: | Cooler tube side up-connecter transient temperature field thermal stress fatigue |
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