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Optimally-Tailored Spinodal Architected Materials for Multiscale Design and Manufacturing
Fernando V Senhora1, Emily D Sanders2, Glaucio H Paulino3,4
1School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive NW, Atlanta, GA, 30332, USA.
Advanced Materials (Deerfield Beach, Fla.)
|March 17, 2022
Summary
Spinodal architected materials offer tunable anisotropy for optimized multiscale structures. This approach efficiently places material along stress trajectories and enables unique mechanical and biological functions, simplifying manufacturing.
Area of Science:
- Materials Science
- Mechanical Engineering
- Additive Manufacturing
Background:
- Spinodal materials exhibit unique bicontinuous, stochastic microstructures.
- Tunable anisotropy is crucial for advanced material design.
- Current methods struggle with integrating complex microstructures into optimized designs.
Purpose of the Study:
- To exploit the anisotropic material space using spinodal structures.
- To unify optimal design and manufacturing of multiscale architected materials.
- To demonstrate a direct manufacturing route for spinodal-embedded optimized parts.
Main Methods:
- Topology optimization incorporating local variation of spinodal class, orientation, and porosity.
- Functional representation of spinodal materials for multiscale design.
- Voxel-based manufacturing strategy for masked stereolithography (m-SLA) 3D printing.
Main Results:
- Efficient material placement along microscale principal stress trajectories.
- Exploitation of a large portion of the anisotropic material space.
- Demonstration of inherent mechanical/biological functions (e.g., imperfection insensitivity, fluid transport).
Conclusions:
- Spinodal architected materials enable direct manufacturing of complex, optimized multiscale designs.
- This approach offers advantages over traditional composites and periodic lattices.
- The method allows for efficient material utilization and enhanced functional properties.
