殷有泉, 励争. 弹性结构的分岔点失稳和极值点失稳[J]. 力学与实践, 2015, 37(3): 376-378. DOI: 10.6052/1000-0879-14-179
引用本文: 殷有泉, 励争. 弹性结构的分岔点失稳和极值点失稳[J]. 力学与实践, 2015, 37(3): 376-378. DOI: 10.6052/1000-0879-14-179
YIN Youquan, LI Zheng. The instabilities of bifurcation point and extreme point of an elastic structure[J]. MECHANICS IN ENGINEERING, 2015, 37(3): 376-378. DOI: 10.6052/1000-0879-14-179
Citation: YIN Youquan, LI Zheng. The instabilities of bifurcation point and extreme point of an elastic structure[J]. MECHANICS IN ENGINEERING, 2015, 37(3): 376-378. DOI: 10.6052/1000-0879-14-179

弹性结构的分岔点失稳和极值点失稳

The instabilities of bifurcation point and extreme point of an elastic structure

  • 摘要: 以浅桁架为例, 介绍了弹性结构两类不同的失稳形态: 分岔点失稳和极值点失稳. 浅桁架失稳形态与斜杆的柔度λ和倾角α0 有关. 当α0λ < 33/4π 时为极值点失稳, 发生突跳; 否则为分岔点型失稳.

     

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