题目内容
For axial compression members, because the normal stress on the cross section is evenly distributed, it is not necessary to consider the reasonable shape of the cross section
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When the length of the slender compression bar is doubled and other conditions remain unchanged, the critical force becomes 1 / 4 of the original; If the length is halved, the critical force becomes 4 times of the original.
The compression bar meeting the strength does not necessarily meet the stability; The compression bar meeting the stability does not necessarily meet the strength
The stability of alloy steel must be better than that of carbon steel
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