Learning from the nature: Bio-inspired hook design and development

Mansor, Muhammad Mustaqim (2024) Learning from the nature: Bio-inspired hook design and development. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Hooks in hoists and cranes play a crucial role in lifting heavy loads across diverse industries, from manufacturing to oil exploration and automotive sectors. Despite their essential function, hook failures can occur due to various factors, including the type of bearing in the hook block, the fastening system securing the hook to hoists or cranes, and the materials used in their construction. Traditional manufacturing processes often yield oversized, expensive hooks lacking flexibility. This study aims to revolutionize hook design by applying bio-inspired principles, specifically drawing inspiration from nature. The design process involves generating CAD models using Solidworks, incorporating insights from muscle fiber patterns, seahorse tail geometry, and Bald Eagle grip strength. The manufacturing phase utilizes Fused Deposition Modeling (FDM) with bio-composite materials, and specific printing parameters, such as a layer height of 0.2mm and 100% infill density, ensure the production of high-quality hooks. Prior to analysis, the hooks undergo a biomimicry design process, emphasizing material strength, integrity, and fracture behavior. Finite Element Analysis (FEA) validation further ensures the reliability of the bio-inspired hook models. The results showcase the success of Design Concept 1 (Eagle Claw), demonstrating a Factor of Safety (FOS) of 1.3, confirming its robustness and ability to handle forces 1.3 times greater than expected. Mechanical testing, including tensile and flexural tests, along with FEA simulations, highlight the superior performance of Eagle Claw. Tensile testing reveals the design's ductile characteristics, with a maximum force of 561.48 N and stress reaching approximately 4.49 MPa. Flexural testing indicates Eagle Claw's strength, with a peak force of 1544 N and a stress of 115.86 MPa. Simulation results further support the design's reliability, with lower Von Mises stress and resultant displacement compared to alternative designs. This bio-inspired hook model not only addresses manufacturing challenges but also offers a versatile solution for heavy load scenarios, emphasizing strength, flexibility, and efficiency in various applications.

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