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电力金具的破坏载荷的1.2倍是依据什么来的??

2025-04-03 17:10:14

推荐回答（1个）

回答1：

破坏荷载F=受压面的面积*抗压强度
标准试块为15x15x15CM立方时，抗压强度等于破坏载荷除以试件面积，单位为 MPa。采用非标准试块时要乘以换算系数，分别是：边长10cm 的立方体试件为0. 95 ，边长20 cm 的立方体试件为1.05。
比如15cm试件强度是荷载（1000kN），面积225cm2，强度是44.4MPa。
破坏载荷：一般是指零部件或材料失效载荷，在此状态下改变材料或零部件原来的结构，即材料产生屈服现象。

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