Analysis of Stability and Large Deflection Buckle of Rolled Strip by Third Power B-Spline Function Method

A new method——the third power B-spline function method is developed to analyse the stability and the buckle of rolled strip under residual stress.The large deflection theory of thin plate is used to calculate the buckle of rolled strip and criterion of critical buckle is given.The computed results tally with those of experiment well,which provides theoretical basis and method for developing the mathematical model of flatness control.

Transverse Distributions of Front and Back Tension Stresses in Cold Strip Rolling

In this paper,such a new lateral displacement function is proposed that the lateral flow velocity is con- tinuous at the entry and the exit of deformation zone.A new kind of finite strip method—the third power B-spline finite strip method—is put forward to simulate strip rolling process.Front and back tension stresses are formulated.The computed results of the transverse distributions of the front and back tension stresses are close to the experimental results.The paper lays a foundation for further analysing the three-dimensional stresses and deformations of strip rolling.

高层建筑厚筏基础的简化计算分析

采用三次B样条函数模拟厚筏基础变形曲线 ,将上部结构、厚筏与地基进行耦合计算 ,降低了厚筏分析的复杂程度。同时 ,考虑高层建筑上部结构、厚筏与地基的共同作用 ,根据工程实测结果 ,对高层建筑结构刚度进行了等代简化。数值分析结果与模拟试验结果对比 。