Length factor in the following figure μ=
A. μ<0.7
B. 0.7<μ<1.0
C. 1.0<μ<2
D. μ>2
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The slender rod bears the axial pressure P, and the critical pressure Pcrit of the rod is independent of
A. Material of rod
B. the length of rod
C. Pressure on rod
D. Shape of rod
When the materials are the same, with the increase of working flexibility,
A. The critical pressure of slender rod decreases, and the critical pressure of medium thick rod remains unchanged
B. The critical pressure of slender rod remains unchanged, and the critical pressure of medium thick rod decreases
C. The critical pressure of slender rod decreases, and that of medium thick rod decreases
D. The critical pressure of slender rod remains unchanged, and that of medium thick rod remains unchanged
The main reason for the instability of compression bar is the influence of external interference force
A. 对
B. 错
The compression bar made of the same material, the greater its flexibility, the easier to instability
A. 对
B. 错
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