| 基于子模型与网格随移技术的叶轮三维裂纹应力强度因子分析 |
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| 引用本文： | 赵俊生,马朝臣,吴涛.基于子模型与网格随移技术的叶轮三维裂纹应力强度因子分析[J].机械科学与技术(西安),2011(1):66-70. |
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| 作者姓名： | 赵俊生 马朝臣 吴涛 |
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| 作者单位： | 中北大学机械工程与自动化学院;北京理工大学机械与车辆工程学院;国电太原市第一热电厂; |
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| 基金项目： | 山西省高等学校科技项目(2008058)资助 |
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| 摘 要： | 基于断裂力学理论和有限元数值分析方法,针对压气机叶轮由于铸造缺陷和疲劳引起的三维裂纹,应用子模型技术和ParaMesh网格随移技术,给出了压气机叶轮轴孔三维裂纹前沿应力强度因子的求解方法及途径,并对压气机叶轮轴孔三维裂纹的扩展方向和扩展速率进行了分析.压气机叶轮轴孔三维裂纹应力强度因子求解结果表明,叶轮轴孔三维裂纹前沿...
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| 关 键 词： | 压气机叶轮 有限元法 裂纹前沿 应力强度因子 子模型 网格随移 |
Finite Element Analysis of the Stress Intensity Factor(SIF) of the Crack Tip in a Turbocharger Impeller |
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| Zhao Junsheng,Ma Chaochen,Wu Tao.Finite Element Analysis of the Stress Intensity Factor(SIF) of the Crack Tip in a Turbocharger Impeller[J].Mechanical Science and Technology,2011(1):66-70. |
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| Authors: | Zhao Junsheng Ma Chaochen Wu Tao |
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| Affiliation: | Zhao Junsheng1,Ma Chaochen2,Wu Tao3 (1 College of Mechanical Engineering and Automatization,North University of China,Taiyuan 030051,2 School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,3 Taiyuan No.1 Thermal Power Plant of China Guodian Corporation,Taiyuan 030021) |
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| Abstract: | A method for solving stress intensity factor of the crack front of an impeller hub is presented by applying ParaMesh and Submodel technology of ANSYS software based on fracture mechanics theory and finite element method.The crack growth rate and the expansion direction are analyzed by taking into account of the 3-D cracks of a compressor impeller which are caused by casting defect or fatigue.Calculation result shows that the axial crack growth rate exceed the radial expanding rate on the crack face,the axia... |
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| Keywords: | compressor impeller finite element method(FEM) crack front stress intensity factor(SIF) Submodel ParaMesh ANSYS |
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