摘要
为满足大容积风洞真空球罐的研发和安全使用需求,从网格划分、单元选择及接触设置3个方面展开对比研究,总结提出了高效率、高精度的有限元分析流程。对某5 000 m3球罐模型进行多尺度的结构化六面体网格划分,最大程度消除网格误差,通过对比分析得到以下结论:球罐采用壳单元时,相对于采用实体单元,计算效率有所提升,但分析结果过于保守;分别利用共节点、绑定接触、焊接模拟引出管、补强圈、支座与罐体的载荷传递时,三者应力计算结果误差均在5%左右,考虑计算结果的稳定性,建议使用共节点模拟球罐零部件的连接。
With a view to investigating and developing large vacuum spherical tanks for large-volume wind tunnels,a comparative study was carried out from meshing,element selection and contact setting,including having a high-efficiency and high-precision finite element analysis process summarized and proposed,having the multi-scale structured hexahedron of a 5000 m3 spherical tank mode meshed to eliminate the grid error to the greatest extent.Compared with the solid element shows that,when the spherical tank adopts the shell element,the calculation efficiency can be improved,but the analysis result is too conservative;when making use of a common joint,binding the contact and welding simulate the load transfer among the exit tube,reinforcement ring,support and tank,the errors of their stress calculation results are all about 5%.Considering the stability of calculation results,applying the common joint to simulate the connection of spherical tank parts shall be recommended.
作者
李林彬
侯峰伟
杨方奎
薛睿渊
LI Lin-bin;HOU Feng-wei;YANG Fang-kui;XUE Rui-yuan(School of Petrochemical Engineering,Lanzhou University of Technology;Institute of Ultra-high Speed Aerodynamics,China Aerodynamic Research and Development Center;National Key Laboratory of Aircraft Fluid Physics,China Aerodynamic Research and Development Center)
出处
《化工机械》
2025年第4期594-599,共6页
Chemical Engineering & Machinery
基金
甘肃省青年科技基金计划(批准号:22JR5RA297)资助的课题。
关键词
真空球罐
风洞
安全性能
有限元分析
vacuum spherical tank
wind tunnel
safety performance
finite element analysis
