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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Algorithm Development in Materials Science and Engineering
Presentation Title Three-Dimensional Micromechanical Framework for Explicit representation of Deformation Twinning
Author(s) Akhilesh Pedgaonkar, Anderson Nascimento, Curt Bronkhorst, Irene Beyerlein
On-Site Speaker (Planned) Akhilesh Pedgaonkar
Abstract Scope Deformation Twinning plays an important role in the plasticity of hexagonal close-packed (HCP) materials. In Crystal Plasticity Finite Element Method (CPFEM), it is challenging to represent deformation twinning due to their grain-sized length and time scales, but its explicit modeling is crucial for studying the evolution physics of twinning. In this work, we explicitly represent deformation twinning as an embedded weak discontinuity inside each element within the CPFEM. This method uses Hu-Washizu type variational formulation to naturally capture evolving discontinuities without the need for re-meshing. Compatibility of displacement and traction continuity across the discontinuity are also maintained. We present this computational framework for three dimensions for the first time and consider its application to high-purity HCP Titanium. We consider the dominant slip and twin systems in pure Titanium and present how this simulation framework with experiments can help us validate the growth and propagation physics of twinning.
Proceedings Inclusion? Planned:
Keywords Modeling and Simulation, ICME, Computational Materials Science & Engineering

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A Digital Thread for Field Assisted Sintering of Titanium Components
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Concurrent Atomistic-continuum Modeling of Materials Synthesis, Structure, and Properties
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Data-driven 2D Grain Growth Microstructure Reconstruction Using Deep Learning and Spectral Graph Theory
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Development of a Research and Production Material Model Library for Computational Solid Mechanics
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Field Fluctuations Viscoplastic Self-consistent Crystal Plasticity: Applications to Predicting Texture Evolution during Deformation and Recrystallization of Cubic Polycrystalline Metals
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Multiscale Modeling to Investigate the Deformation and Bonding Mechanism during Joining of Multi-materials by High-velocity Riveting
Parameter Prediction of Anisotropic Yield Function from Neural Network-based Indentation Plastometry
Physics-based Strategies to Mitigate Crystal Plasticity Parameter Uncertainty
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Quantum Approximate Bayesian Optimization Algorithm for Design of High-entropy Alloys
Solid-state Precipitation in Molecular Dynamics: KMC-MD Hybrid Simulations
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Understanding Diffusion Processes in a Multicomponent Alloy Using a Variational Approach
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