Configuration Design and Verification of Shear Compliant Border in Space Membrane Structure
Anbo Cao, Zhiquan Liu, Qiuhong Lin, Hui Qiu
TL;DR
This paper introduces a new design method for shear compliant borders in space membrane structures to improve stress uniformity and structural compatibility.
Contribution
A novel shear compliant border configuration design method is proposed and verified for space membrane structures.
Findings
The borders reduce maximum stress in the membrane by 35.6% and improve stress uniformity by 30.5%.
The borders decrease the increment speed of flatness under shear stress by 58.1%.
The design is compatible with existing tensegrity systems like tensioning components and cable sleeves.
Abstract
To solve the non-uniformity of stress in space membrane structure and the lack of shear compliant border configuration design method, shear compliant borders are designed, optimized, and verified in terms of configuration. Firstly, an orthotropic model of the borders is built by combining Hill and Christensen-Lo composite material models. Secondly, a finite element form-finding method is put forward by establishing rectangular and cylindrical coordinates in different areas. The configuration of borders is obtained and the influence of the borders on the edge of the membrane is 0.23%, which means that the borders are compatible with the existing tensegrity systems, especially the tensioning components and the cable sleeves. Thirdly, simulation verifies that borders can cut the spread of shear stress and improve the stress uniformity in membrane structure. The maximum stress in the…
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Taxonomy
TopicsStructural Analysis and Optimization · Innovations in Concrete and Construction Materials · Mechanical Behavior of Composites