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Laser 3D printed bio-inspired impact resistant structure: Structure optimization and failure mechanism

Early Career Researcher: Student (poster and 2-minute poster pitch) at Digital Twin Symposium 2019, presented by Jiankai Yang

Abstract

The telson (tail plate) of Stomatopoda (mantis shrimp) shows excellent impact resistance properties, and its special structure is an ideal prototype to mimic. In this work, a series of bi-directionally corrugated panel (DCP) structures inspired by the telson of mantis shrimp was designed. The crush simulation of DCP structures with different structural parameters was carried out using ANSYS LS-DYNA. In order to verify the simulation results, DCP components were fabricated by selective laser melting and the out-of-plane compression tests were conducted to investigate the compression performance. The SLM-processed components with DCP structures showed high surface quality and good forming accuracy. The numerical simulation results indicated that the influence of wavelength of DCP structure on the energy absorption (EA) and specific energy absorption (SEA) capability was greater than that of the amplitude. This work also presented a comprehensive failure mechanism study of the bi-directionally corrugated panel (DCP) structures.

Presenting Author

Photo ofJiankai Yang

Jiankai Yang

Nanjing University of Aeronautics and Astronautics

2013-2017, Nanjing University of Aeronautics and Astronautics, Bachelor of Materials Science and Technology; 2017-Now, Nanjing University of Aeronautics and Astronautics, Ph. D of Materials Processing Engineering

Additional Authors

  • Dongdong Gu (NUAA)