| 外压作用下圆柱壳的塑性初始后屈曲 |
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| 引用本文： | 黄玉盈.外压作用下圆柱壳的塑性初始后屈曲[J].上海交通大学学报,1990(Z1). |
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| 作者姓名： | 黄玉盈 |
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| 作者单位： | 华中理工大学 |
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| 摘 要： | 本文基于塑性流动理论,利用 Hutchinson 的塑性初始后屈曲方法,研究了无缺陷圆柱壳在均匀外压作用下的弹塑性后屈曲性态.壳体材料为任意幂次强化模型.计算结果表明,对于直径厚度比 D/t<40的一类壳体,必须要考虑塑性变形,而且由此表现出来的后屈曲性态和弹性情况完全不同,它存在有压力极限值,对几何缺陷的敏感比较显著.
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| 关 键 词： | 圆柱壳 弹塑性屈曲 塑性 初始后屈曲 |
Initial Postbuckling Behavior of Circular Cylindrical Shells in Plastic Range under External Pressure |
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| Huang Yuying.Initial Postbuckling Behavior of Circular Cylindrical Shells in Plastic Range under External Pressure[J].Journal of Shanghai Jiaotong University,1990(Z1). |
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| Authors: | Huang Yuying |
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| Institution: | Huang Yuying |
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| Abstract: | Based on the J_2 flow theory,an analysis is presented of the initial
postbuckling behavior of circular cylindrical shells subjected to external pre-
ssure by using Hutchinson's general method.The elastic-plastic material
forming the shells is taken to have an arbitrary strainhardening exponent.It
is shown that plastic deformation must be taken into account if the shells have
a diameter-thickness ratio of less than 40.This kind of shell has a diff-
erent postbuckling behavior from thin cylindrical shells and its imperfection-
sensitivity is strong. |
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| Keywords: | cylindrical shell elastic-plastic buckling plasticity initial postbuckling |
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