The critical pressure of the compression bar is directly proportional to the elastic modulus of the material
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Two compression bars with the same material, length, cross-sectional area and constraints must have the same critical force
A. 对
B. 错
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
A. 对
B. 错
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.
A. 对
B. 错
The compression bar meeting the strength does not necessarily meet the stability; The compression bar meeting the stability does not necessarily meet the strength
A. 对
B. 错