Torsional and axial buckling analysis of bio-inspired helicoidal laminated composite cylindrical shells
Bio-inspired helicoidal composites, which emulate the layered, spiral structures found in natural materials such as bone and seashells, offer improved strength, durability, and resistance. These qualities make them particularly suitable for applications in fields like aerospace, automotive, and prot...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025008850 |
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| Summary: | Bio-inspired helicoidal composites, which emulate the layered, spiral structures found in natural materials such as bone and seashells, offer improved strength, durability, and resistance. These qualities make them particularly suitable for applications in fields like aerospace, automotive, and protective equipment, where unique mechanical properties are critical. This study investigates the potential of bio-inspired helicoidal lamination in cylindrical shell structures to enhance their buckling performance. A comprehensive analysis is conducted on the torsional and axial buckling behavior of helicoidally laminated composite cylindrical shells, which are supported by a Winkler-type elastic foundation. To obtain solutions, a numerical approach is utilized based on three-dimensional elasticity theory, incorporating Green's strain geometric nonlinearity and the virtual work principle. The finite element method and geometric stiffness concepts are applied to calculate eigenvalue buckling loads. Various bio-inspired lay-up configurations, such as linear, Fibonacci, recursive, exponential, and semicircular helicoidal patterns, are explored and compared with established configurations like unidirectional, cross-ply, and quasi-isotropic laminates. This study evaluates the influence of parameters such as axial and torsional loading, lamination patterns, layer count, shell thickness and length ratios, Winkler elastic foundation, and boundary conditions on the buckling load of helicoidal laminated cylindrical shells. It was observed that selecting appropriate helicoidal patterns can substantially enhance both axial and buckling load capacities. Notably, the Fibonacci Helicoidal (FH) and Helicoidal Semicircular (HS) configurations achieved the highest axial and torsional buckling capacities, respectively. In contrast, the Helicoidal Recursive HR(β=1) configuration showed the lowest capacity for both loading scenarios. Results provide a comprehensive comparison between helicoidal configurations and conventional lamination models, highlighting the potential of bio-inspired helicoidal patterns to optimize the performance of thin-walled composite structures in advanced applications. |
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| ISSN: | 2590-1230 |