| 离心压缩机叶轮静强度分析方法 |
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| 引用本文： | 关振群,宋洋,杨树华,刘万青,吕军,王鄢,程耿东〖〗.离心压缩机叶轮静强度分析方法[J].大连理工大学学报,2011,51(2):157-162. |
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| 作者姓名： | 关振群 宋洋 杨树华 刘万青 吕军 王鄢 程耿东〖〗 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室;沈阳鼓风机(集团)股份有限公司; |
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| 基金项目： | 国家自然科学基金资助项目(10721062); “九七三”国家重点基础研究发展计划资助项目(2009CB724302) |
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| 摘 要： | 采用自适应有限元分析与弹塑性分析方法,对某离心压缩机叶轮进行精细的静强度分析.阐述了对网格不敏感的结构热点应力的概念.得到了基于结构热点应力相应的强度判别准则,并对叶轮的von Mises应力和等效塑性应变随时间演化历程进行了分析,数值模拟结果表明,对叶轮进行超速预加载处理,能够有效扩大材料的弹性工作范围,降低叶轮正常工作时的应力水平,且超速预加载工艺符合其力学机理.
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| 关 键 词： | 超速预加载 残余应力 等效塑性应交 结构热点应力 |
Analysis methods for static strength of centrifugal compressor impeller |
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| GUAN Zhenqun,SONG Yang,YANG Shuhu,LIU Wanqing,L Jun,WANG Yan,CHENG Gengdong.Analysis methods for static strength of centrifugal compressor impeller[J].Journal of Dalian University of Technology,2011,51(2):157-162. |
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| Authors: | GUAN Zhenqun SONG Yang YANG Shuhu LIU Wanqing L Jun WANG Yan CHENG Gengdong |
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| Institution: | GUAN Zhen-qun*1,SONG Yang1,YANG Shu-hua2,LIU Wan-qing2,Lu Jun1,WANG Yan1,CHENG Geng-dong11.State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China,2.Shenyang Blower Works Group Co.Ltd.,Shenyang 110142 |
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| Abstract: | Finite element method and elastic-plastic analysis method are employed to carry out refined static strength analysis for a centrifugal compressor impeller.The concept of structural hot spot stress is introduced which is not sensitive to the mesh size.The strength criterion based on the structural hot spot stress is acquired,and the evolution of von Mises stress and equivalent plastic strain with time is analyzed.The numerical simulation results show that dealing with the pre-over loading on the impeller can... |
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| Keywords: | pre-over loading residual stress equivalent plastic strain structural hot spot stress |
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