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Indexed by:期刊论文

Date of Publication:2016-06-01

Journal:THIN-WALLED STRUCTURES

Included Journals:SCIE、EI

Volume:103

Page Number:171-182

ISSN No.:0263-8231

Key Words:Hybrid-stiffness stiffened shell; Sub-panel element; Buckling; Hybrid model; Integrated optimization

Abstract:A concept of hybrid-stiffness stiffened shell is proposed based on sub-panel elements to achieve a simultaneous buckling pattern, which can provide enhanced design flexibility to fully explore the load carrying capacity of structures. Then, a novel hybrid model is established to improve the computational efficiency of post-buckling analysis for stiffened shells, where the Numerical Implementation of Asymptotic Homogenization Method is utilized to smear out the stiffeners. On this basis, an integrated optimization framework of sub-panel configurations and weld lands for stiffened shells is presented. Illustrative examples with single and multiple cutouts demonstrate the effectiveness of the proposed framework based on the concept of hybrid-stiffness stiffened shell. (C) 2016 Elsevier Ltd. All rights reserved.