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论文类型：期刊论文

发表时间：2016-06-01

发表刊物：THIN-WALLED STRUCTURES

收录刊物：SCIE、EI

卷号：103

页面范围：171-182

ISSN号：0263-8231

关键字：Hybrid-stiffness stiffened shell; Sub-panel element; Buckling; Hybrid model; Integrated optimization

摘要：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.