摘要
采用有限元法中的伪弧长算法研究了集中载荷作用下圆拱的大范围非线性问题,给出了临界载荷与圆心角间的关系曲线以及极值分叉与简单分叉的分界点,并对屈曲后的变形进行了追踪。文中首先简述伪弧长算法,然后给出计算结果。
In this paper, the large scale nonlinear problem of circular
arch beams under concentrated load is studied by the pseudo arclength algorithm in the finite
element method. The curves of the critical load vs. The center angle and the critical point
between the bifurcation and the simple bifurcation are obtained. The deformations after
buckling are traced. To begin with, the pseudo arclength algorithm is briefly described, then the
calculated results are presented.
出处
《计算力学学报》
CAS
CSCD
1999年第3期270-274,共5页
Chinese Journal of Computational Mechanics
基金
国家自然科学基金
博士点基金
工业装备结构分析国家重点实验室开放基金
关键词
有限元
非线性
圆拱
伪弧长算法
集中载荷
分叉
finite element method
nonlinear
circular arch
pseudo arclength algorithm