摘要
本文建立了三维长索局部和整体坐标间的映射关系，采用三阶Ｂ样条基构建索的等参元模型，导出了假定初应力技术以克服索初平衡状态寻找中可能遇到的困难。采用本文方法可以求解松索、紧索及索系统的非线性静动力问题。
In this paper the reflection relationships between the local and global co-ordinatesystems of 3D cables were established. The third order B spline function was adopted toconstitute the isoparametric FE model of cables. An assumed initial stress technique wasdeveloped to overcome the difficulties in finding initial equilibrium state of cables. The nonlinearproblems of taut and slack continuous cables and cable systems can be satisfactorily solved.
出处
《工程力学》
EI
CSCD
北大核心
1999年第1期115-122,共8页
Engineering Mechanics
基金
国家自然科学基金青年基金
关键词
连续长索
非线性静动力
样条单元
索单元
continuous cable, nonlinear analysis, spline function element
