梁柱问题和压杆第二类稳定问题的共性

General Character of Beam-Cloumn and Axially Loaded Bar of Second Kind Stability

采用一种简化的强度利用率函数,求出了具有初始挠度,初偏心和横向载荷作用的轴心压杆的轴向载荷的解析算式。并用附加弯矩的概念论述了区分压杆的强度和稳定问题的标志,说明压杆的第二类稳定问题和梁柱问题具有共性——均属于强度问题。25个压杆模型实验的数据给于了验证。

An analytic formula for axially loaded bar with initial imperfections and transverse load is given by using a simplified strength utilization ratio funetion. The criterion judging strength and stability problems may be obtained by using the concept of additional moment, and the general character of these structures is that they belong to strength problem. The above analys is may be proved by twenty five mddel test data.