壳体轴压失稳载荷的非破坏预示

NONDESTRUCTIVE ESTIMATION OF CRITICAL LOADS FOR SHELLS SUBJECTED TO AXIAL LOADS

本文提出了侧向柔度法。该方法把壳体的侧向柔度率作为控制参数,研究该参数随轴压的变化特性,结合低载荷下的实测数据,运用最小二乘法原理进行拟合,可预示失稳载荷。计算实例表明,这种方法是可行的。

A new nondestructive test method, which is called as lateral flexibility method, is provided in this paper. The method based on extrapolation using “lateral flexibility rate” as control variation. critical loads of cylindrical shells can be predicted by analysising date measured under lower load, and applying principle of the method of least square.