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June 27, 2026Rapid Prototyping Journal

Investigation of energy absorption for 3D printed auxetic tubular structures

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Authors

TATalal AlmalkiMAMahmoud AzzahraniGAGhazi Alsoruji

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Overview

Randomized trial evaluates energy absorption in novel auxetic structures, suggesting benefits for engineering applications.

Key Points

  • This research aims to experimentally characterize the energy absorption behavior of three distinct 3D-printed auxetic tubular structures.
  • Developed two axisymmetric auxetic structures (RA1 and R2A) and a third 3D re-entrant structure (R1NA) using fused deposition modeling.
  • Evaluated mechanical performance through experimental characterization focused on energy absorption metrics.
  • Assessed specific energy absorption and crush force efficiency for comparison between structures.
  • The two axisymmetric auxetic structures showed significantly higher specific energy absorption compared to the lattice structure (exact numbers not provided).
  • CFE was enhanced in the auxetic structures due to a more efficient crushing phase with a nearly constant crushing force.

Cite This Study

Almalki et al. (2026) studied this question.

synapsesocial.com/papers/6a3f69a5aea7db3c19540583https://doi.org/10.1108/rpj-04-2025-0127
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Also Consider

Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Optimization of energy absorption in bio-inspired cylindrical lattice structures: an experimental investigation with Box–Behnken design2025
  2. 2Auxetic meta-materials and their engineering applications: a review2023 · 70 citations
  3. 3Using Finite Element Approach for Crashworthiness Assessment of a Polymeric Auxetic Structure Subjected to the Axial Loading2020 · 44 citations