Study on numerical inverse hanging method for freeform shell structure

Journal article (2018)

Authors

Yue Wu Harbin Institute of Technology
Yan Su Harbin Institute of Technology
Q. Li Structural Design & Mechanics - Architecture and the Built Environment , Harbin Institute of Technology
Qingjie Hu Xiaoshan District Housing and Construction Bureau
Research Group
Structural Design & Mechanics (Architecture and the Built Environment) (TU Delft)
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Published Date

2018

Language

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Faculty

Architecture and the Built Environment

Department

Architectural Engineering +Technology

Research Group

Structural Design & Mechanics

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.

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