Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Square tubes with graded wall thickness under oblique crushing
https://orcid.org/0000-0001-8463-0568
Abstract Thin-walled square tubes with graded wall thickness were previously found to be more efficient in terms of energy absorption than square tubes with uniform thickness subjected to axial compression. In this paper, the mechanical performance of square tubes with in-plane graded wall thickness under oblique compression has been investigated for the first time. Three different types of square tube configurations: four walls with uniform wall thickness, single-surface graded wall thickness (SSG) and double-surface graded wall thickness (DSG) were experimentally compressed at loading angles of 0°, 10° and 15°, respectively. Finite element models were subsequently developed to study the effects of wall thickness, graded thickness configuration and loading angle on deformation modes, force–displacement curves and energy absorption. The results show that both SSG and DSG tubes display better specific energy absorption than tubes with uniform thickness and very similar mass under oblique compression. With the increase of the loading angle, the specific energy absorption of all tubes studied decreases except SSG0814 tube. DSG tubes present similar specific energy absorption as that of the corresponding SSG tubes under axial and oblique loadings.
Highlights This is the first study of square tubes with in-plane graded wall thickness under oblique compression. Square tubes with in-plane graded wall thicknesses show superior specific energy absorption. Square tubes with different in-plane graded wall thicknesses absorb similar energy.
Square tubes with graded wall thickness under oblique crushing
https://orcid.org/0000-0001-8463-0568
Abstract Thin-walled square tubes with graded wall thickness were previously found to be more efficient in terms of energy absorption than square tubes with uniform thickness subjected to axial compression. In this paper, the mechanical performance of square tubes with in-plane graded wall thickness under oblique compression has been investigated for the first time. Three different types of square tube configurations: four walls with uniform wall thickness, single-surface graded wall thickness (SSG) and double-surface graded wall thickness (DSG) were experimentally compressed at loading angles of 0°, 10° and 15°, respectively. Finite element models were subsequently developed to study the effects of wall thickness, graded thickness configuration and loading angle on deformation modes, force–displacement curves and energy absorption. The results show that both SSG and DSG tubes display better specific energy absorption than tubes with uniform thickness and very similar mass under oblique compression. With the increase of the loading angle, the specific energy absorption of all tubes studied decreases except SSG0814 tube. DSG tubes present similar specific energy absorption as that of the corresponding SSG tubes under axial and oblique loadings.
Highlights This is the first study of square tubes with in-plane graded wall thickness under oblique compression. Square tubes with in-plane graded wall thicknesses show superior specific energy absorption. Square tubes with different in-plane graded wall thicknesses absorb similar energy.
Square tubes with graded wall thickness under oblique crushing
https://orcid.org/0000-0001-8463-0568
Abstract Thin-walled square tubes with graded wall thickness were previously found to be more efficient in terms of energy absorption than square tubes with uniform thickness subjected to axial compression. In this paper, the mechanical performance of square tubes with in-plane graded wall thickness under oblique compression has been investigated for the first time. Three different types of square tube configurations: four walls with uniform wall thickness, single-surface graded wall thickness (SSG) and double-surface graded wall thickness (DSG) were experimentally compressed at loading angles of 0°, 10° and 15°, respectively. Finite element models were subsequently developed to study the effects of wall thickness, graded thickness configuration and loading angle on deformation modes, force–displacement curves and energy absorption. The results show that both SSG and DSG tubes display better specific energy absorption than tubes with uniform thickness and very similar mass under oblique compression. With the increase of the loading angle, the specific energy absorption of all tubes studied decreases except SSG0814 tube. DSG tubes present similar specific energy absorption as that of the corresponding SSG tubes under axial and oblique loadings.
Highlights This is the first study of square tubes with in-plane graded wall thickness under oblique compression. Square tubes with in-plane graded wall thicknesses show superior specific energy absorption. Square tubes with different in-plane graded wall thicknesses absorb similar energy.
Square tubes with graded wall thickness under oblique crushing
Zhang, Hai (Autor:in) / Gao, Zhipeng (Autor:in) / Ruan, Dong (Autor:in)
Thin-Walled Structures ; 183
27.11.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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