用功、能增量方法研究压杆跳跃性屈曲

STUDY ON JUMP BUCKLING OF A COMPRESSED POLE BY METHOD OF WORK AND ENERGY INCREMENT

摘要: 在微弯杆件平衡位置作准静态位移时, 以任一点处的状态为参考态, 建立的平衡位置有微位移时, 用功、能增量平衡关系, 可以直接导得相应突变模型的平衡方程来对杆跳跃式屈曲行为进行分析. 该研究途径也可用于其他弹性体跳跃式屈曲问题.

Abstract: The equilibrium equation of a catastrophe model candescribe the jumping behavior of a pole, when there is atiny displacement at the equilibrium location. The method can also be applied to the jump of other elastomers.