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Journal Article

Enhanced Compressive Performance and Energy Absorption in SLM-Fabricated 316L Arrowhead Auxetics via Tendon and Stuffer Geometry Modification

Wang Junsong, Demartino Cristoforo, Sberna A.P., Jiang Liming, Usmani Asif
Composite Structures — January 2025
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Enhanced Compressive Performance and Energy Absorption in SLM-Fabricated 316L Arrowhead Auxetics via Tendon and Stuffer Geometry Modification

Abstract

This study investigates how geometric modifications in double-arrowhead auxetic lattice structures affect compressive behavior and energy absorption. Lattices were fabricated in 316L stainless steel using Selective Laser Melting (SLM) at relative densities of 5%, 10%, and 15%.

Arrowhead structuresAuxetic metamaterialsSelective Laser Melting (SLM)Finite Element Modeling (FEM)Compressive behaviorSHPBProtective applications

Highlights

  • SLM fabrication of 316L stainless steel auxetic metamaterials.
  • Tailored arrowhead geometry for enhanced compressive performance.
  • Comprehensive quasi-static and dynamic mechanical characterization.
  • FEM and experimental validation of auxetic and energy absorption behaviors.
  • Optimized designs for superior protective performance.