Towards knowledge-based workflows: a semantic approach to atomistic simulations for mechanical and thermodynamic properties

TL;DR

This paper introduces reusable, metadata-annotated atomistic workflows for molecular dynamics simulations that enhance reproducibility, interoperability, and AI-readiness in materials property evaluation.

Contribution

It presents a semantic, FAIR-compliant framework for atomistic workflows that capture provenance and enable reuse across different materials and potentials.

Findings

Validated structure-property relations like the Hall-Petch effect.

Workflows are reusable across various interatomic potentials and materials.

Provides AI-ready simulation data supporting agentic workflows.

Abstract

Mechanical and thermodynamic properties, including the influence of crystal defects, are critical for evaluating materials in engineering applications. Molecular dynamics simulations provide valuable insight into these mechanisms at the atomic scale. However, current practice often relies on fragmented scripts with inconsistent metadata and limited provenance, which hinders reproducibility, interoperability, and reuse. FAIR data principles and workflow-based approaches offer a path to address these limitations. We present reusable atomistic workflows that incorporate metadata annotation aligned with application ontologies, enabling automatic provenance capture and FAIR-compliant data outputs. The workflows cover key mechanical and thermodynamic quantities, including equation of state, elastic tensors, mechanical loading, thermal properties, defect formation energies, and nanoindentation. We demonstrate validation of structure-property relations such as the Hall-Petch effect and show that the workflows can be reused across different interatomic potentials and materials within a coherent semantic framework. The approach provides AI-ready simulation data, supports emerging agentic AI workflows, and establishes a generalizable blueprint for knowledge-based mechanical and thermodynamic simulations.