U形薄壳渡槽稳定性分析的柱壳有限条法

The Cylindrical Shell Finite Strip Method for the Stability Analysis of U -shape Thin Shell Aquenduct

本文研究了用柱壳有限条法解Ｕ形薄壳渡槽稳定性问题，理论上采用大挠度的应变─—位移关系。单元位移模式采用半解析函数，即沿周向采用离散的多项式，沿轴向采用解析型的三角函数。计算表明，这种方法精度较高，计算量小。

This paper studies the stability of the U-shape thin shell aquerduct by using the Cylindrical Shell Finite Strip Method (CSFSM).The Large-deflection relation of strain-displacement is adopted.Element displacement models adopts semi - analytical functions.Then,discrete POlynomial is adopted in the circumference direction,and analytical triangle function is adopted in the axial direction.Through calculation,it indicates that the precision is high and that the amout of calculation is very minor by using this method.