离心通风机叶轮的有限元建模与应力分析
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摘要
为了得到结构合理、安全性高的叶轮,分别采用传统手工理论计算和有限元数值分析软件计算2种方法,对9-19-10D型通风机叶轮进行应力计算分析,总结出一种选用板壳单元并利用约束方程将叶片和盘的边界节点进行耦合的有限元建模方法,应力计算分析后可以进一步对已有叶轮结构进行优化。结果表明:采用有限元数值分析方法不仅提高了计算精度,而且可以得到直观的应力分布,便于找到产生应力集中的部位进行优化处理,进一步提高强度。
To get an impeller with reasonable and reliable structure,stress calculation and analysis was made on 9- 19- 10 D fan impeller by the methods of FEM software and general theories. A method of finite element modeling was got that using shell elements to build a FEM model and then coupling the contiguous nodes of the blades and the discs. Then the impeller's structure was optimized after calculation and analysis. The results show that the FEM calculation can not only improve the accuracy of calculation,but also get stress distribution more directly. So it is convenient to optimize the stress concentration parts to enhance the strength.
To get an impeller with reasonable and reliable structure,stress calculation and analysis was made on 9- 19- 10 D fan impeller by the methods of FEM software and general theories. A method of finite element modeling was got that using shell elements to build a FEM model and then coupling the contiguous nodes of the blades and the discs. Then the impeller's structure was optimized after calculation and analysis. The results show that the FEM calculation can not only improve the accuracy of calculation,but also get stress distribution more directly. So it is convenient to optimize the stress concentration parts to enhance the strength.
引文
[1]刘建红.离心通风机叶轮的有限元分析[D].济南:山东大学,2012.
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[7]王海桥,贾腾,陈世强,等.变频矿用主通风机性能试验及非等比变化律研究[J].流体机械,2015,43(1):13-18,3.
[8]罗凯,罗鑫,黄闯,等.基于Fluent的多翼式离心风机性能分析[J].流体机械,2014,42(7):43-47.
[9]李建伟,李佳航,李文华,等.UFPP特殊架构应力分析[J].压力容器,2014,31(1):44-51.
[10]史艳花,黄志平,张宁,等.立式碾米机主立轴的有限元分析[J].包装与食品机械,2014,32(4):41,89-91.
[11]陈学力,何永明,王军,等.水轮机真机转轮动应力试验分析[J].排灌机械工程学报,2015,33(7):1-5.
[12]孙涛,王毅,王晓放,等.变厚度叶片对离心压缩机结构强度和性能影响[J].大连理工大学学报,2012,52(1):29-34.
[13]蔡兆麟,韩海燕,彭鑫,等.旋转叶轮三维应力分布及其改善措施[J].华中科技大学学报(自然科学版),2003,31(12):81-83.
[14]Jifeng Wang.Strength and dynamic characteristics analyses of wound composite axial impeller[J].Cent.Eur.J.Eng.,2012,2(1):104-112.
[2]高平,张文焘,刘梦安,等.基于ANSYS的离心风机叶轮有限元分析[J].机械工程师,2012,(6):59-61.
[3]商景泰.通风机实用技术手册[M].北京:机械工业出版社,2005.4.
[4]黄忠文,王培,於潜军,等.塔式起重机臂的结构分析[J].武汉工程大学学报,2014,36(6):69-72.
[5]周玉丰.基于ANSYS的离心泵叶轮结构有限元分析[J].自动化与仪器仪表,2011,(4):136-137.
[6]蔡建程,袁民健,卢傅安,等.两种离心通风机叶轮零部件强度计算方法的比较分析[J].风机技术,2007,(5):30-33.
[7]王海桥,贾腾,陈世强,等.变频矿用主通风机性能试验及非等比变化律研究[J].流体机械,2015,43(1):13-18,3.
[8]罗凯,罗鑫,黄闯,等.基于Fluent的多翼式离心风机性能分析[J].流体机械,2014,42(7):43-47.
[9]李建伟,李佳航,李文华,等.UFPP特殊架构应力分析[J].压力容器,2014,31(1):44-51.
[10]史艳花,黄志平,张宁,等.立式碾米机主立轴的有限元分析[J].包装与食品机械,2014,32(4):41,89-91.
[11]陈学力,何永明,王军,等.水轮机真机转轮动应力试验分析[J].排灌机械工程学报,2015,33(7):1-5.
[12]孙涛,王毅,王晓放,等.变厚度叶片对离心压缩机结构强度和性能影响[J].大连理工大学学报,2012,52(1):29-34.
[13]蔡兆麟,韩海燕,彭鑫,等.旋转叶轮三维应力分布及其改善措施[J].华中科技大学学报(自然科学版),2003,31(12):81-83.
[14]Jifeng Wang.Strength and dynamic characteristics analyses of wound composite axial impeller[J].Cent.Eur.J.Eng.,2012,2(1):104-112.