Details

Autor(en) / Beteiligte

• Zhang, Yuhang
• Xu, Dongfang
• Li, Jiejie
• Zhang, Zhennan
• Ding, Suhang
• Wu, Wenwang
• Xia, Re

Titel

Mechanical properties and clamping behaviors of snow crab claw

Ist Teil von

• Journal of the mechanical behavior of biomedical materials, 2021-12, Vol.124, p.104818-104818, Article 104818

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The high-performing biomimetic behaviors of crustaceans are the optimal results of long-time wise adaption to their living environment. One outstanding prototype is crab claw, which has the combining advantages of lightweight and high strength. To promote relevant engineering applications, it is imperative to explore its mechanical behaviors and structural characteristics. In this work, mechanical test and finite element analysis (FEA) are performed to reveal the fundamental mechanical properties and clamping behaviors of snow crab (Chionoecetes opilio) claw, respectively. A lightweight modeling method, parametric lofting modeling, for the 3D modeling of the claw is employed, which is compared with the traditional reverse engineering modeling method based on tomography image. Our results demonstrated that the hardness and modulus of the regions near the top of the claw are larger than those of the regions near of bottom of the claw. Moisture is a critical factor in controlling the tensile behavior of the claw and the wet specimens exhibit higher modulus and strength under tensile loading. Besides, The parametric lofting method is highly flexible and efficient in generating 3D geometrical model. The investigation of clamping behaviors provides not only insights into mechanical behaviors and intrinsic mechanisms but also a practical guide for their potential applications, such as designing high-performing artificial clamping muscles for clinical operations, aerospace applications, and robotics. [Display omitted] •Nanoindentation and tensile tests are performed to reveal the mechanical properties of crab claw.•A lightweight modeling method, parametric lofting, for 3D modeling of crab claw is proposed.•Reverse engineering modeling method is compared with the parametric lofting.•Clamping behaviors of crab claw are studied by FEA.