Energy Absorption in Gyroid Lattices: A Parametric Study

Parametric investigation of gyroid lattice structures manufactured via selective laser melting. Cell size, wall thickness, and gradient strategies are systematically varied to optimize energy absorption under compression.

Abstract

Gyroid lattice structures are attractive for lightweight energy absorption because they can deform progressively under compression while avoiding some of the stress concentrations common in strut-based lattices. This study-style article outlines a parametric workflow for evaluating gyroid unit-cell size, wall thickness, and density gradients.

Why Gyroids?

A gyroid is a triply periodic minimal surface. In practical additive manufacturing, it can create a smooth, continuous network that distributes stress and supports controlled collapse. That makes it useful for impact mitigation, biomedical scaffolds, lightweight cores, and design demonstrations.

Parameters

The most important design variables are relative density, unit-cell size, wall thickness, specimen aspect ratio, and build orientation. These variables are coupled. Increasing wall thickness usually raises peak load, but it can also shift the collapse mode and reduce useful plateau behavior.

Test Metrics

Compression testing should report:

• Initial stiffness.
• Peak stress.
• Plateau stress.
• Densification strain.
• Specific energy absorption.
• Failure mode and repeatability.

Design Insight

The best energy absorber is often not the strongest specimen. A high initial peak can transmit too much force. For protective applications, a lower, stable plateau may be preferable because it spreads energy absorption over a longer deformation path.

Next Step

A strong public portfolio extension would include a small parametric dataset, compression curves, and a plot of specific energy absorption versus relative density. That would show both materials intuition and data fluency.