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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Verification, Calibration, and Validation Approaches in Modeling the Mechanical Performance of Metallic Materials
Presentation Title The Significance of Capturing Spatial Microstructural Variability in Strut-Level Material Models for Local Stress Analysis of AM Lattices
Author(s) Kavan Hazeli
On-Site Speaker (Planned) Kavan Hazeli
Abstract Scope This presentation demonstrates the critical impact of accurately representing strut-level anisotropic material behavior in the advanced stress analysis of additively manufactured lattice structures (AMLS). We introduce a systematic experimental and modeling framework to develop anisotropic elastoplastic material models at the strut level. These models incorporate the effects of key microstructural features such as crystallographic texture, which vary with strut orientation relative to the build direction. As a result, the presented material model captures and relates the statistics of spatially varying struts' microstructural features to the local stress distribution. We will demonstrate how this approach can inform topology selection based on the material system struts’ level microstructure formation, enabling a more integrated and predictive design strategy. This represents a significant shift from the conventional practice of designing topologies based on geometrical factors first and then testing them across different materials.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Mechanical Properties, Modeling and Simulation

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