 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| X.J. Niu and X. Zhang, "Curvature-Constrained Layup Optimization to Improve Buckling Resistance of Composite Laminates," Mech. Solids. 57 (6), 1500-1511 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
6 |
Pages |
1500-1511 |
| DOI |
10.3103/S0025654422060103 |
| Title |
Curvature-Constrained Layup Optimization to Improve Buckling Resistance of Composite Laminates |
| Author(s) |
X.J. Niu (Tiangong University, Tianjin, 300387 China; Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin, 300387 China, niuxuejuan@tiangong.edu.cn)
X. Zhang (Key Laboratory of Advanced Mechatronics Equipment Technology, Tianjin, 300387 China, zx823682201@163.com) |
| Abstract |
To improve the buckling resistance, a variable stiffness (VS) layup optimization strategy is proposed by considering the constraints of manufacturing process. By considering the curvature constraints of fiber-tow paths during the fabrication of VS laminates, the constrained Kriging model is bult to relate the design variable of layup configuration with the buckling resistance. The first eigenvalue obtained from the eigenvalue buckling analyzing is set as the objective function, and used to establish the constrained Kriging model. With the help of the multi-island genetic algorithm (MIGA), the global optimal solution is searched, and the influence of VS layups on buckling of composite laminates is analyzed. Taking a uniaxial compressive buckling case for example, an optimized layup configuration has been obtained. By investigating the effectiveness of the optimization strategies, buckling characteristics of four laminates with different layup configurations have been simulated by nonlinear buckling analyzing, and have been proved by the compressive buckling tests. By comparing the buckling responses of the analytical model and the experimental results, it can be found the laminate with optimized layup configuration has a much better buckling resistance ability. Compared with traditional constant stiffness (CS) laminate, the buckling stiffness and ultimate load have been improved by 41.1% and 113.58%, respectively. |
| Keywords |
Variable stiffness, Buckling analysis, Constrained Kriging Model, Layup optimization |
| Received |
14 August 2022 | Revised |
17 August 2022 | Accepted |
17 August 2022 |
| Link to Fulltext |
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