| 定向凝固简化空心叶片热应力数值模拟 |
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| 引用本文： | 洪耀武,孙长波,康进武,许庆彦,柳百成. 定向凝固简化空心叶片热应力数值模拟[J]. 铸造, 2011, 60(8) |
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| 作者姓名： | 洪耀武 孙长波 康进武 许庆彦 柳百成 |
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| 作者单位： | 1. 清华大学机械工程系,先进成形制造教育部重点实验室,北京100084
2. 沈阳黎明航空发动机(集团有限责任公司,辽宁沈阳,110043 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目，自然科学基金，国家高技术研究发展计划(863)项目，国家科技重大专项 |
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| 摘 要： | 定向凝固叶片在凝固过程中产生的热应力会导致叶片最终存在残余应力、变形甚至裂纹而使得叶片报废,故研究叶片凝固过程的热应力变化具有重要意义.通过数值模拟的方法可以对叶片的凝固过程热应力进行模拟,得出应力变化情况,对叶片可能产生的缺陷进行预测.文中采用商用软件ProCAST对定向凝固简化空心叶片的热应力场进行数值模拟,分析空心叶片凝固过程中的热应力变化情况,并通过切割法测量了铸件的残余应力,模拟结果与实验结果吻合较好.
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| 关 键 词： | 热应力 数值模拟 叶片 定向凝固 |
Numerical Simulation of Thermal Stress During Directional Solidification of Simple Hollow Turbine Blades |
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| HONG Yao-wu,SUN Chang-bo,KANG Jin-wu,XU Qing-yan,LIU Bai-cheng. Numerical Simulation of Thermal Stress During Directional Solidification of Simple Hollow Turbine Blades[J]. China Foundry, 2011, 60(8) |
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| Authors: | HONG Yao-wu SUN Chang-bo KANG Jin-wu XU Qing-yan LIU Bai-cheng |
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| Affiliation: | HONG Yao-wu1,SUN Chang-bo2,KANG Jin-wu1,XU Qing-yan1,LIU Bai-cheng1(1.Key Laboratory for Advanced Materials Processing Technology,Ministry of Education,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China,2.Shenyang Liming Aero-Engine(Group)Corporation,Shenyang 110043,Liaoning,China) |
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| Abstract: | The thermal stress happened during the directional solidification of turbine blades may result in the residual stress,deformation and even cracks in the blades,and then the blades will be rejected.Using numerical simulation of thermal stress during the solidification of blades,people can obtain how the thermal stress changes,and then they can analyze and predict the positions and causing reasons of defects.In this paper the commercial software ProCAST was used to simulate the thermal stress during direction... |
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| Keywords: | thermal stress numerical simulation turbine blades directional solidification |
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