Work

Data-driven design of isotropic and high-stiffness TPMS-based aperiodicity-induced architected material (TAAM)

Year: 2025

Type: article

Abstract: For their excellent stiffness-to-weight characteristics, triply periodic minimal surfaces (TPMS) are widely adopted in architected materials. However, their geometric regularity often leads to elastic anisotropy, limiting their effectiveness under complex loading. To address this, we propose TPMS-based aperiodicity-induced architected materials (TAAMs), which incorporate controllable geometric disorder as a tunable design variable. This concept of designable disorder broadens the geometric design space, enabling the simultaneous optimization of stiffness and isotropy. A data-driven framework integrating computational homogenization with multi-objective Bayesian optimization is employed to discover high-performance TAAMs. Selected designs were fabricated using fused deposition modeling and validated through uniaxial compression tests, showing strong agreement with numerical predictions. Compared to conventional TPMS, TAAMs exhibit significantly improved elastic isotropy while maintaining high stiffness across various relative densities. This approach offers a robust and scalable pathway for developing architected materials tailored to applications requiring isotropic performance, such as biomedical implants, protective systems, and aerospace components.

Source: Materials & Design

DOI: 10.1016/j.matdes.2025.115065

Authors: Minwoo Park, Junheui Jo, Seunghwa Ryu

Institution: Korea Advanced Institute of Science and Technology

Language: English

Topic: Cellular and Composite Structures

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,650

Funders: Ministry of Food and Drug Safety, National Research Foundation of Korea, Ministry of Science and ICT, South Korea