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M8的螺栓保證載荷是21200N,是2.12噸,最小拉力載荷是29200N,是2.92噸,那么為什么M8 |
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點評
還有去掉預(yù)緊力
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點評
Q235 , 235MPa*PI*3.4mm*3.4mm=8500N ,
10.8級 800MPa -----28.9KN
得看級別。
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點評
根據(jù)等級定義,可以算出來抗拉、抗剪的力
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