Zheng Zhang , Jiayang Zhao , Min Sun , Guang Zhang , Dongyi Li , Shaofei Jiang
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Morphing characteristics of segmented variable stiffness bistable hybrid laminates
Conventional mechanical actuators are limited in aerospace and adaptive architecture applications due to their high complexity and cost. Morphing structures, with their superior adaptability and morphing capabilities, have attracted increasing attention. In this study, a novel thermally responsive bistable structure is developed by introducing a segmented design and hybrid variable stiffness layers into the antisymmetric laminate. The effects of commonly used metal materials, hybrid layer width, and metal layer thickness on the stable configurations, snap behavior, and actuation characteristics of the bistable laminate are systematically investigated. Experimental and numerical results indicate that the incorporation of segmented variable stiffness layers significantly enhances the structural bistable characteristics. Furthermore, by leveraging the potential energy difference between stable configurations and the edge effects of the laminate, a combination of adaptive and active control is achieved. This study offers promising implications for advancing bistable structures in engineering applications.
期刊介绍:
The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials.
The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.