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变应力的应力比r可以是负数么
更新时间: 2020-10-03 00:00:00  

应力比是指对试件循环加载时的最小荷载与最大载荷之比,有的文献称此为循环特征系数。当小应力是负值,大应力是正值时就能得到这种情况。 在所考察的截面某一点单位面积上的内力称为应力。同截面垂直的称为正应力或法向应力,同截面相切的称为剪应力或切应力。

关键词: 应力 可以 负数

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