不同网格划分方式下阀门有限元分析结果差异性研究  

Study on the Difference of Valve Finite Element Analysis Results Under Different Meshing Methods

作　　者：薛睿渊 张永楠 张希恒[1,2] 张黉立 孟晓桥 XUE Ruiyuan;ZHANG Yongnan;ZHANG Xiheng;ZHANG Hongli;MENG Xiaoqiao(School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050 China;Wenzhou Pump and Valve Engineering Research Institute,Lanzhou University of Technology,Wenzhou 325024 China;Sichuan Shujiao CNPC Energy Co.,Ltd.,Chengdu 500643 China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325024 [3]四川蜀交中油能源有限公司,四川成都500643

出　　处：《西华大学学报(自然科学版)》2025年第2期106-112,共7页Journal of Xihua University:Natural Science Edition

基　　金：甘肃省中青年科技基金计划(22JR5RA297)。

摘　　要：网格划分方式关系着阀门有限元分析结果的准确性,但不同网格形式和密度对计算结果的影响趋势还鲜有研究。以某轴流式止回阀的阀芯为例,探讨了在阀门有限元模拟过程中不同软件计算结构的差异及网格划分方式、密度对计算结果的影响。研究结果表明:阀门强度有限元分析结果由前处理及求解设置决定;相对于四面体网格,采用六面体网格划分能有效避免因网格划分引起的应力奇异或者应力集中现象,而且能降低接触面间的网格渗透误差,从而使阀门强度计算结果更为精确,此外六面体网格计算结果更为稳定,受网格密度影响较低。研究成果可为阀门网格划分方式选择及强度分析结果的判定提供指导。The meshing method determines the accuracy of the valve finite element analysis results.However,the influence trend of different grid forms and density on the calculation results is rarely studied.The spool of an axial check valve was taken as an example to explore the differences of the calculation results of different software and the influence of meshing and density on the calculation results in the process of valve finite element simulation.The results show that the finite element analysis results of valve strength are determined by the pretreatment and solution settings.Compared with the tetrahedral mesh,the use of hexahedral meshing can effectively avoid the stress singularity or stress concentration caused by meshing,and can reduce the mesh penetration error between the contact surfaces.Therefore,the valve strength calculation results are more accurate,in addition,the hexahedral mesh calculation results are more stable and less affected by the mesh density.The research results provide guidance for the selection of valve meshing method and the determination of strength analysis results.

关 键 词：阀门 网格划分 网格密度 有限元法 强度分析 

分 类 号：TH134[机械工程—机械制造及自动化] TB115[理学—数学]