图示三根压杆均为细长(大柔度)压杆,且弯曲刚度均为EI。三根压杆的临界荷载Fcr

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问题 图示三根压杆均为细长(大柔度)压杆,且弯曲刚度均为EI。三根压杆的临界荷载Fcr的关系为:A. Fcra>Fcrb>FcrcB.Fcrb>Fcra>FcrcC. Fcrc>Fcra>FcrbD.Fcrb>Fcrc>Fcra

选项 A. Fcra>Fcrb>Fcrc
B.Fcrb>Fcra>Fcrc
C. Fcrc>Fcra>Fcrb
D.Fcrb>Fcrc>Fcra

答案 C

解析
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