Geometric configuration and parametric evaluation of auxetic meta-materials for enhanced plastic energy dissipation in blast scenarios
نویسندگان
1 School of Industrial Engineering, Grenoble Institute of Technology, Grenoble, France
2 School of Industrial Engineering, Grenoble Institute of Technology, Grenoble, France
3 Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India
4 Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India
5 Indian Oil Corporation Limited, Coimbatore
doi
10.22059/jcamech.2024.376821.1102چکیده
The prevailing risk factors and explosion scenarios in Electric Vehicles (EVs) necessitated this research to focus on the analysis and optimization of auxetic patterns encompassing re-entrant, double re-entrant, and triangular structures under blast loading conditions. In this study, a comprehensive blast analysis has been conducted numerically using ABAQUS on auxetic meta-materials featuring re-entrant, double re-entrant, and triangular structures with varying strut angles (85°, 80°, 75°) and strut thickness. Their performances have been compared among them and also with a traditional solid plate. Among these auxetic structures, the double re-entrant structure with 85o strut angle and 0.2 mm strut thickness outperformed other auxetic structures with a minimal bottom plate displacement of 3.4 mm and plastic dissipation energy of 0.171 kJ. The consistent behavior of these structures has been substantiated by conducting blast analysis with a reduced stand-off distance of 30 mm. The simulation results are then compared with the results of the 50 mm stand-off distance for deformation, plastic dissipation energy, and velocity.
