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承受弯曲的板在裂纹顶端附近的应力和变形
Authors
柳春图
Publication date
1 January 1983
Publisher
Abstract
1.引言板壳结构是工程中常用的一种受力结构元件,对于有裂纹板的弯曲问题已经发表了一批著作,绝大部分是采用了克希霍夫经典板理论,应用此理论进行断裂分析在理论上是有重大缺陷的。这是由于经典板理论对于裂纹面边界条件只是近似地满足,因此不能正确反映裂纹尖端附近的力学性质。对于Reissner理论的分析工作从六十年代以来就开始了。由于问题的复杂性,长期进展不快。有代表性的是Knowlts和Wang以及Hartranft和Sih的工作,他们用积分变换的方法求解问题,他们得到了问题的首项表达式。这是一个近似的形式。为了更好的了解有裂纹情况下板的力学性能以及更可靠的进行近似分析和计算应力强度因子的目的,类似于平面问题的Williams展开
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018