人民黄河Issue(3)：92-95,4.DOI:10.3969/j.issn.1000-1379.2014.03.030
环肋加劲压力钢管的有限元屈曲分析
Buckling Analysis of Ring Stiffened Steel Penstocks with FEM
慕园 1陆晓敏1
作者信息
- 1. 河海大学力学与材料学院，江苏南京210098
- 折叠
摘要
Abstract
The penstocks are vulnerable to instability under external loads. In order to study the critical buckling value of ring stiffened penstocks ,linear buckling and nonlinear buckling analysis of penstocks were completed by using the finite element software ABAQUS with taking a hydroelec-tric power station penstock as an example in considering the large deformation of the steel penstocks and on the basis of initial imperfection . The re-sults show that the finite element method can reasonably consider interactions with ring stiffener and penstock segment between stiffeners ,and FEM is more reasonable than the specification design method and Amstutz’s approach ,which are separately considering the stability under external pres-sure of ring stiffener and middle pipe segment. In view that the stiffened ring can significantly improve the stability of penstocks,suitable ratio of height to thickness for stiffener is under study,in order to providing reference for using of penstock normative design method.关键词
压力钢管/ABAQUS/几何初始缺陷/Riks弧长法/局部稳定Key words
steel penstocks/ABAQUS/initial geometrical imperfection/riks arc-length method/local stability分类
建筑与水利引用本文复制引用
慕园,陆晓敏..环肋加劲压力钢管的有限元屈曲分析[J].人民黄河,2014,(3):92-95,4.
