筋肋增强薄壁圆筒有限元分析
马震宇1，王毅1，杨顺法2
（1.郑州航空工业管理学院 航空工程系，河南 郑州 450015；2.郑州机电工程研究所，河南 郑州 450015）
摘要：镁合金薄壁结构在飞行器和航海器工程领域应用范围逐步扩展。针对一种筋肋增强镁合金薄壁圆筒结构试件，采用SolidWorks Simulation有限元分析软件，数值模拟圆筒结构应力和变形分布及结构固有模态特性。结果表明在1～1.75 MPa外压载荷下，圆筒壳板最大等效应力和变形都发生在外止口临域单元框壳板中心部位，其值随外压载荷的变化与筒体试验有关结果符合较好，筋和肋对增强薄壁结构壳体刚性起主要作用。圆筒前十阶固有频率从683 Hz依次增加至1147 Hz。Simulation软件能够用于筒体结构的后续改进设计和深化研究使用。
关键词：镁合金圆筒；薄壁增强结构；SolidWorks Simulation；应力分析；模态分析
中图分类号：U674，V214.4 文献标志码：A doi：10.3969/j.issn.1006-0316.2016.04.007
文章编号：1006－0316 (2016) 04－0025－04
Finite element analysis of thin shell cylindrical cabin with reinforced ribs
MA Zhenyu1，WANG Yi1，YANG Shunfa2
( 1.Aeronatical Engineering Department, Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, China; 2.Zhengzhou Mechantronic Engineering Research Institute, Zhengzhou 450015, China )
Abstract：The application scope of magnesium alloy thin shell structure in aircraft and marine engineering field is gradually expanded. Based on SolidWorks Simulation software, structure static-force and modal characteristic are calculated for a magnesium alloy thin cylindrical cabin with reinforcement ribs.The results show that maximum equivalent stress and deformation of the cabin are in the center of cylinder shell plate in adjacent region of the outer connection port under （1-1.75）MPa external pressure loads, and accord well with the cabin hydraulic testing results. The ribs reinforce mainly the rigidity of the thin shell structure. The first ten order natural frequency increases gradually from 683Hz to 1147Hz. The Simulation software can be used for following improved design and further research of the thin shell cabin structure.
Key words：magnesium alloy cylindrical cabin；thin shell reinforcement structure；SolidWorks Simulation；stress analysis；modal analysis
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收稿日期：2015－08－19
基金项目：中船集团预研项目（62201050402）；河南省基础与前沿技术研究资助项目（112300410003）
作者简介：马震宇（1964－），男，河南郑州人，硕士，研究员，主要研究方向为飞航器动力技术性能。
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