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Appl. Sci. 2017, 7(11), 1150; https://doi.org/10.3390/app7111150

The Stability of New Single-Layer Combined Lattice Shell Based on Aluminum Alloy Honeycomb Panels

Key Laboratory of Concrete and Prestressed Concrete Structure, Ministry of Education, School of Civil Engineering, Southeast University, Nanjing 210096, China
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Received: 16 October 2017 / Revised: 31 October 2017 / Accepted: 6 November 2017 / Published: 9 November 2017
(This article belongs to the Special Issue Mechanical Behaviour of Aluminium Alloys)
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Abstract

This article proposes a new type of single-layer combined lattice shell (NSCLS); which is based on aluminum alloy honeycomb panels. Six models with initial geometric defect were designed and precision made using numerical control equipment. The stability of these models was tested. The results showed that the stable bearing capacity of NSCLS was approximately 16% higher than that of a lattice shell with the same span without a reinforcing plate. At the same time; the properties of the NSCLS were sensitive to defects. When defects were present; its stable bearing capacity was decreased by 12.3% when compared with the defect-free model. The model with random defects following a truncated Gaussian distribution could be used to simulate the distribution of defects in the NSCLS. The average difference between the results of the nonlinear analysis and the experimental results was 5.7%. By calculating and analyzing nearly 20,000 NSCLS; the suggested values of initial geometric defect were presented. The results of this paper could provide a theoretical basis for making and revising the design codes for this new combined lattice shell structure. View Full-Text
Keywords: honeycomb sandwich structure; single-layer combined lattice shell; stability test; random defect mode method; defect-sensitive structure honeycomb sandwich structure; single-layer combined lattice shell; stability test; random defect mode method; defect-sensitive structure
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Zhao, C.; Zhao, Y.; Ma, J. The Stability of New Single-Layer Combined Lattice Shell Based on Aluminum Alloy Honeycomb Panels. Appl. Sci. 2017, 7, 1150.

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