摘要
以双层柱壳结构在脉冲载荷下的抗冲击问题为例,用量纲分析法得出了可简化为平面应变问题的柱壳在冲击载荷下的瞬态响应所依赖的主要无量纲自变量,并建立相应的计算模型,通过数值模拟给出了采用相同材料并保持相似缩比时,柱壳最大等效应力和应变的具体依赖函数关系,所得结果给柱壳防护结构的设计和试验提供了科学的指导方向和可靠的参考依据。
Based on studying impact-resistance performance of double layered cylindrical shell structures,the main dimensionless independent variables for transient response of a cylindrical shell structure under impact loadings were discussed here though dimensional analysis.The dependent function relationships between the maximum equivalent stress and strain of the shell structure were established with numerical simulation using the same material and keeping the similar compression ratio.The results provided a scientific guidance and a reliable reference for design and test of cylindrical shell protection structures.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第11期12-16,共5页
Journal of Vibration and Shock
基金
国家自然科学基金(11202206
11102206)
关键词
柱壳
抗冲击
量纲分析
数值模拟
cylindrical shell structure
impact-resistance
dimensional analysis
numerical simulation
