弹性极限

弹性限度是材料做拉伸试验时,应力应变将呈现一函数关系,而当应力达到某一值,材料将不会自行恢复原状(降伏),此一应力值,称为弹性限度。若材料所承受的应力小于弹性限度,则可以自行恢复原状。

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