Hao, Na, Zhu, Linfeng, Wu, Zhangming ORCID: https://orcid.org/0000-0001-7100-3282 and Ke, Liao-Liang
2023.
Nonlinear bending of unsymmetric double-layer lattice truss core sandwich beams.
Mechanics Based Design of Structures and Machines
10.1080/15397734.2023.2278673
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Abstract
This paper studied the nonlinear bending of unsymmetric double-layer lattice truss core sandwich beams (LTCSBs). Five unsymmetric cases are considered by varying different materials and geometric thicknesses in two layers. To establish a theoretical model for the unsymmetric double-layer LTCSBs, Allen’s model and von Kármán nonlinear theory are employed. The present theoretical model is established by considering the midplane of the mid-sheet as the reference plane. Ritz method is applied to determine the deflection for the nonlinear bending, and verified by the finite element method (FEM). Finally, the effects of the loading direction, unsymmetric factors, and boundary conditions on the nonlinear bending behaviors of LTCSBs are studied. It is found that the nonlinear deflections of unsymmetric LTCSBs may exhibit softening-spring nonlinearity in one direction.
Item Type: | Article |
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Date Type: | Published Online |
Status: | In Press |
Schools: | Engineering |
Publisher: | Taylor and Francis Group |
ISSN: | 1539-7734 |
Date of First Compliant Deposit: | 30 November 2023 |
Date of Acceptance: | 29 October 2023 |
Last Modified: | 30 Nov 2023 18:57 |
URI: | https://orca.cardiff.ac.uk/id/eprint/164369 |
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