建筑结构学报2018，Vol.39Issue(3)：19-25,7.DOI:10.14006/j.jzjgxb.2018.03.003
自由曲面薄壳结构数值逆吊找形方法研究
Study on numerical inverse hanging method for freeform shell structure
摘要
Abstract
Numerical inverse hanging method is a kind of efficient form-finding method which can generate shell structures free of bending moments under certain external loads.This paper proposes an improved numerical inverse hanging method based on the vector form intrinsic finite element (VFIFE),for improving the poor convergence performance of the existing method based on the nonlinear finite element method.By using VFIFE to find the equilibrium form of inverted structures and using the local linearization method to adjust the Young's modulus of cable elements,the form-control problem of inverted structures is solved.Moreover,a step rigidization method is proposed,which can realize the form-control of complex structures with multiple target points.Finally,the accuracy and efficiency of the numerical method is verified by observing one Isler's plaster model and comparing its physical shape with the numerical simulating result.关键词
自由曲面薄壳结构/逆吊找形法/向量式有限元法/局部线性化方法/分步刚化法Key words
freeform shell structure/inverse hanging method/vector form intrinsic finite element method/local linearization method/step rigidization method分类
建筑与水利引用本文复制引用
武岳,苏岩,李清朋,胡庆杰..自由曲面薄壳结构数值逆吊找形方法研究[J].建筑结构学报,2018,39(3):19-25,7.基金项目
国家自然科学基金项目(51378150,51578186,51778182). （51378150,51578186,51778182）
