Short answer

Designers should consider using additive manufacturing to create multi-material lattice structures and employ systematic optimization techniques to tailor their energy absorption and impact resistance properties.

Field: Modelling
Source: Scientific Reports (2026)
Method: Experimental and Computational Modelling
Evidence: Strong effect

By systematically optimizing unit-cell configuration and material thickness in multi-material lattices using additive manufacturing, energy absorption and peak load capacity can be significantly enhanced. This modelling research insight is drawn from a 2026 study published in Scientific Reports. Using Experimental and computational modelling, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Designers should consider using additive manufacturing to create multi-material lattice structures and employ systematic optimization techniques to tailor their energy absorption and impact resistance properties.

Study

ModellingNew This WeekStrong effect

Optimized Multi-Material Lattice Structures Enhance Energy Absorption by 80%

Scientific Reports · 2026

Key Findings

01Increasing unit-cell count significantly improves plateau-region stability and energy absorption in both strut-based and plate-based lattices.
02Strut-based lattices with a 4x configuration achieved a 57% increase in energy absorption compared to other configurations.
03Plate-based lattices with a 4x configuration achieved an 80% increase in energy absorption compared to other configurations.
04FEA accurately predicted experimental force-deformation behavior.
05Excellent interfacial bonding between PLA and TPU was observed.

Application

Design takeaway

How to apply

When designing components for impact absorption or vibration damping, explore the use of lattice structures. Utilize simulation tools to model different unit-cell configurations and material combinations, and consider additive manufacturing for producing optimized, lightweight designs.

Project actions

01When designing for impact, consider using lattice structures to manage energy.
02Use simulation software to test different lattice designs and material combinations before prototyping.

Method & Evidence

AimHow can the unit-cell configuration and material thickness of multi-material lattice structures be optimized through additive manufacturing to maximize energy absorption and crashworthiness?

MethodExperimental and Computational Modelling

ProcedureThe study involved designing and additively manufacturing multi-material lattice structures using PLA and TPU. A Taguchi Design of Experiments was employed to systematically vary unit-cell configurations (2x, 3x, 4x), inner material thickness, and outer wall thickness. Quasi-static compression testing was performed to evaluate mechanical properties, and Finite Element Analysis (FEA) was used to validate experimental results and conduct crashworthiness simulations. Scanning Electron Microscopy (SEM) was used for microstructural analysis.

ContextAdditive Manufacturing, Mechanical Metamaterials, Structural Design

Variables

IV["Unit-cell configuration (e.g., 2x, 3x, 4x)","Inner material thickness","Outer wall thickness","Lattice type (strut-based vs. plate-based)"]

DV["Normalized peak load","Energy absorption","Plateau-region stability","Mean Crushing Force (MCF)","Crush Force Efficiency (CFE)"]

CV["Material properties (PLA, TPU)","Additive manufacturing process parameters","Testing conditions (quasi-static compression)"]

Strengths & Limitations

Strengths

+Systematic optimization using Taguchi Design of Experiments.
+Validation of simulation results with experimental data.
+Investigation of multi-material integration at the microstructural level (SEM).

Limitations

The cost and time associated with advanced additive manufacturing and extensive FEA can be significant. The accuracy of simulations is dependent on the quality of input parameters and material models.

Reliability & validity

The study's reliability is supported by the use of FEA to validate experimental findings and SEM for microstructural analysis. Validity is enhanced by the systematic approach of the Taguchi Design of Experiments, allowing for controlled variation of key parameters.

Think critically

To what extent can the principles of multi-material lattice optimization be applied to bio-inspired structures for improved performance in dynamic loading scenarios?

Design Principles

"Complex lattice geometries and multi-material integration, enabled by additive manufacturing, can be precisely modelled and optimized to achieve superior energy absorption characteristics."

This research demonstrates how advanced modelling and additive manufacturing can be leveraged to create complex, high-performance structures. Understanding the interplay between lattice geometry, material properties, and manufacturing parameters is crucial for designing lightweight components with superior energy absorption capabilities for applications like impact protection.

What This Means for Your Design

By using 3D printing to make special internal structures (lattices) with different materials, you can make things that absorb impacts much better, with some designs absorbing 80% more energy.

How to use in your project

1.Reference this study when discussing the optimization of lattice structures for energy absorption or crashworthiness in your design project.
2.Use the findings to justify the selection of specific lattice geometries or material strategies in your design.

Add to My Project

Quick Cite

Paragraph starter

This research highlights the significant potential of additive manufacturing in creating optimized multi-material lattice structures. By employing systematic design of experiments and finite element analysis, the study demonstrated that increasing unit-cell complexity and carefully selecting material thicknesses can lead to substantial improvements in energy absorption, with plate-based lattices showing up to an 80% increase. This approach offers a pathway for developing lightweight, high-performance components for applications requiring enhanced impact resistance.

Source

Scientific Reports

Multi-material integration for multifunctional enhancement of additively manufactured cubic strut and plate-lattice structures

journal · 2026

View source

Questions About This Research

What does the research say about optimized multi-material lattice structures enhance energy absorption by 80%?: Designers should consider using additive manufacturing to create multi-material lattice structures and employ systematic optimization techniques to tailor their energy absorption and impact resistance properties. Evidence: Scientific Reports (2026).
Why does "Optimized Multi-Material Lattice Structures Enhance Energy Absorption by 80%" matter for design?: This research demonstrates how advanced modelling and additive manufacturing can be leveraged to create complex, high-performance structures. Understanding the interplay between lattice geometry, material properties, and manufacturing parameters is crucial for designing lightweight components with superior energy absorption capabilities for applications like impact protection.
How can designers apply this research?: Designers should consider using additive manufacturing to create multi-material lattice structures and employ systematic optimization techniques to tailor their energy absorption and impact resistance properties.
What were the main findings?: Increasing unit-cell count significantly improves plateau-region stability and energy absorption in both strut-based and plate-based lattices.. Strut-based lattices with a 4x configuration achieved a 57% increase in energy absorption compared to other configurations.. Plate-based lattices with a 4x configuration achieved an 80% increase in energy absorption compared to other configurations.. FEA accurately predicted experimental force-deformation behavior.
What research method was used?: Experimental and Computational Modelling.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2026 journal from Scientific Reports.
What should I do differently in my next project?: When designing components for impact absorption or vibration damping, explore the use of lattice structures. Utilize simulation tools to model different unit-cell configurations and material combinations, and consider additive manufacturing for producing optimized, lightweight designs.
What are the limitations?: The study focused on specific material combinations (PLA and TPU) and lattice types (cubic strut and plate). The findings may not directly translate to other materials or lattice architectures. Real-world manufacturing variations and environmental factors were not extensively explored.