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一种估算构件疲劳寿命的新方法
Authors
伍义生
Publication date
1 January 1982
Publisher
Abstract
传统的寿命估算方法是名义应力法,这种方法根据构件的名义应力历程、构件的S-N曲线和累积损伤理论估算寿命。这种方法需要做构件的S-N曲线,而且估算的结果常常很不精确。近年来国外发展起一种新的寿命估算方法,这种方法根据构件关键部位的弹塑性分析,将名义应力历程转化为关键部位的局部应力-应变历程,根据局部应力-应变历程和材料的疲劳特性及累积损伤理论进行裂纹形成寿命的估算,称之为局部应力-应变法。这种方法
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018