| SMA管接头系统的蠕变及热应力分析 |
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| 引用本文： | 智友海,史向平,刘永寿,岳珠峰.SMA管接头系统的蠕变及热应力分析[J].强度与环境,2009,36(3):59-64. |
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| 作者姓名： | 智友海 史向平 刘永寿 岳珠峰 |
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| 作者单位： | 1. 西北工业大学力学与土木建筑学院,西安,710129
2. 徐州工程学院数学与物理科学学院,徐州,221008 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，中国博士后科学基金 |
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| 摘 要： | 采用热-机械耦合的瞬态有限元分析方法，对一定温度下的形状记忆合金（SMA）管接头系统进行了分析，得出了系统的温度场、热应变场、应力场、蠕变应变结果，指出了管接头的中间内壁部分的交界面处是产生裂纹或脱粘的危险部位，提出了对系统不但要防止蠕变应力的破坏，而且更要注意预防管道产生的过大变形和蠕变应变的破坏，最终为SMA管接头系统的安全性指导和设计提供了理论依据。
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| 关 键 词： | 管接头 形状记忆合金 热-机械耦合 温度场 蠕变 脱粘 |
Creep and thermal stress analysis of the SMA joint system |
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| ZHI You-hai,SHI Xiang-ping,LIU Yong-shou,YUE Zhu-feng.Creep and thermal stress analysis of the SMA joint system[J].Structure & Environment Engineering,2009,36(3):59-64. |
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| Authors: | ZHI You-hai SHI Xiang-ping LIU Yong-shou YUE Zhu-feng |
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| Institution: | ZHI You-hai1 SHI Xiang-ping2 LIU Yong-shou1 YUE Zhu-feng1 |
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| Abstract: | The coupled thermal-mechanical transient state analysis was used to investigate the SMA joint system under a temperature field.Those fields of temperature,thermal strain,stress and creep were pre-sented for the system.Critical un-bonded parts were obtained in middle interfaces between the joint and pipes.Precautions were proposed in not only creep stresses but also the excessive deformation and creep strain.It supplies a theoretical basis for the structural reliability and design. |
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| Keywords: | Joint shape memory alloy（SMA） coupled thermal-mechanicah temperature field creep un-bonded |
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