Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Buckling Behavior of Different Types of Spherical Weave Structures Under Vertical Compression Loads

Version 1 : Received: 31 July 2022 / Approved: 2 August 2022 / Online: 2 August 2022 (10:22:30 CEST)

How to cite: Song, G.; Sun, B. Buckling Behavior of Different Types of Spherical Weave Structures Under Vertical Compression Loads. Preprints 2022, 2022080063. https://doi.org/10.20944/preprints202208.0063.v1 Song, G.; Sun, B. Buckling Behavior of Different Types of Spherical Weave Structures Under Vertical Compression Loads. Preprints 2022, 2022080063. https://doi.org/10.20944/preprints202208.0063.v1

Abstract

Weaving technology can convert two-dimensional structures such as ribbons into three-dimensional structures by specific connections. However, most of the 3D structures fabricated by conventional weaving methods using straight ribbons have some topological defects. In order to obtain smoother continuous 3D surface structures, Baek et al. proposed a novel weaving method using naturally curved (in-plane) ribbons to fabricated three-dimensional curved structures and using this method to weave new spherical weave structures that are closer to perfect spheres. We believe that this new spherical weave structure with smooth geometric properties must correspond to new mechanical properties. To this end, we investigated the buckling characteristics of different types of spherical weave structures by the combination of test and finite element method. The results of calculations and experiments show that the failure mode of the spherical weave structure under vertical loading can be divided into two stages: a flat contact region forms between the spherical weave structure and the rigid plate and inward dimple of ribbons. The spherical weave structures using naturally curved (in-plane) ribbon weaving have better buckling stability than those woven with straight ribbons. The vertical buckling load of spherical weave structures using naturally curved ribbon increases with the width and thickness of the ribbon. In addition, this paper combines test, theoretical and finite element analysis to propose the buckling load equation and buckling correction factor equation for the new spherical weave structure under vertical compression load.

Keywords

Spherical weave structure; In-plane curvatures; Buckling; Test; Buckling load

Subject

Engineering, Mechanical Engineering

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