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Strength evaluation of continuous curvilinear variable stiffness panels with circular cutouts under biaxial normal loading and off-design conditions.

Authors :
Arian Nik, Mahdi
Fayazbakhsh, Kazem
Khan, Sadben
Fawaz, Zouheir
Source :
Mechanics of Advanced Materials & Structures; 2022, Vol. 29 Issue 25, p3860-3870, 11p
Publication Year :
2022

Abstract

Continuous curvilinear variable stiffness (CCVS) design is explored to improve strength of panels with cutouts compared to straight-fiber laminates. All possible biaxial loading combinations and several force ratios are investigated. A total of 40 optimization problems (40 loading conditions) are solved using a surrogate-based genetic algorithm. CCVS designs provide at least 50% improvement in failure load for all loading conditions over a quasi-isotropic laminate, the baseline. Under off-design conditions, some CCVS designs outperform the baseline for all loading conditions by an average of 52% and 44%, respectively, for a plate with a small and a large hole. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
LAMINATED materials
DESIGN

Details

Language :
English
ISSN :
15376494
Volume :
29
Issue :
25
Database :
Complementary Index
Journal :
Mechanics of Advanced Materials & Structures
Publication Type :
Academic Journal
Accession number :
160164913
Full Text :
https://doi.org/10.1080/15376494.2021.1912441