题目内容
Two compression bars with the same material, length, cross-sectional area and constraints must have the same critical force
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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
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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