固体火箭技术Issue(4)：541-548,8.DOI:10.7673/j.issn.1006-2793.2015.04.018
薄壁加筋圆柱壳后屈曲分析方法研究
Comparative study on post-buckling analysis method of thin-walled stiffened cylindrical shell
摘要
Abstract
The post⁃buckling behavior of thin⁃walled stiffened cylindrical shell structures under axial compression was studied based on FEA by nonlinear explicit dynamic method,and the critical buckling load was compared with nonlinear implicit method when changing the structural geometric parameters,such as cylindrical shell ribs sectional aspect ratio,skin thickness,and the de⁃gree of density.The results show that: the mass ratio of the ribs and the skin is greater than 0.4,the calculation results between the explicit and implicit methods are consistent.When the mass ratio of the ribs and the skin is less than 0.4,the calculation results be⁃tween the explicit and implicit methods present a volatility differences.Explicit nonlinear analysis is a fast and efficient analysis method for the post⁃buckling behavior of thin⁃walled stiffened cylindrical shell structures when the mass ratio of the ribs and the skin is greater than 0.4.关键词
加筋圆柱壳/后屈曲/显式动力学分析Key words
stiffened cylindrical shell/post-buckling/explicit dynamic method分类
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李庆亚,谭福颖,乔玲,董萼良,费庆国..薄壁加筋圆柱壳后屈曲分析方法研究[J].固体火箭技术,2015,(4):541-548,8.基金项目
国家自然科学基金（10902024；11202051）；教育部博士学科点基金（20130092120039）；教育部新世纪优秀人才支持计划（NCET-11-0086）。 （）
