非均布载荷下板材失稳判别试验装置

 失稳屈曲是板材失效的一种特殊方式，判断板材在不同分布载荷下是否失稳具有重要意义。目前虽然已对均布与非均布载荷下板材失稳屈曲问题进行了大量理论研究，但是缺少专门研究非均布载荷下板材失稳判别的试验设备。为此，专门设计了一套为板材施加非均布载荷的试验方案，当给定分布载荷的具体形式后，可由推导的公式计算压头与板材之间压块的高度分布，由此可以实现任意形式分布载荷的施加，具有结构简单及容易实现的优点，为板材失稳屈曲理论研究提供了一种简单易行的验证手段。

Experimental installation on instability of plate under non- uniform load

Buckling is a special way of plate failure,and it is important to judge whether the plate is unstable under dif-ferent distributed load. At present,although there are a lot of theoretical studies on the buckling of plate under uniform load and non-uniform load,the lack of special experimental equipment to study the instability of the plate under non-uni-form load is existing. To this end,the current study designed a set of special experimental program for the plate under the non-uniform load. When given a specific form of the distribution of the load,the height distribution of the pressure block between the pressure head and the plate can be calculated by the formula of this paper. So it can be applied to any form of distributed load. It has the advantages of simple structure and easy realization,and provides a simple and easy method for the study of the buckling of the plate.