About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
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Symposium
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Integration between Modeling and Experiments for Crystalline Metals: From Atomistic to Macroscopic Scales III
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Presentation Title |
Co-development of Experiment and Simulation to Observe Dynamic Behavior in Metals in Complex Loading Environments |
Author(s) |
Benjamin M. Morrow, Virginia K. Euser, Clarissa A. Yablinsky, Nicholas A. Denissen |
On-Site Speaker (Planned) |
Benjamin M. Morrow |
Abstract Scope |
Materials subjected to dynamic conditions often exhibit complex behaviors beyond what is expected in the quasi-static regime. Due to the short timescales involved during dynamic testing, plasticity and phase transformation phenomena are often difficult to capture experimentally, and simulations are required to fill in missing information, specifically regarding evolution of the microstructure and activity of various deformation mechanisms. The challenges of model validation in the dynamic regime will be discussed with case studies showcasing real-world examples of experimental-theoretical linkages. Kolsky bar experiments were paired with mesoscale models for off-equilibrium mechanical behavior. Additionally, experimental measurements and coupled multiphysics modeling were used to enable friction measurements across a wide range of sliding velocities (10^-4 – 20m/s) for structural metals. These examples demonstrate that a co-validation scheme where experiment and theory are used in tandem can be used to access complex datastreams, providing better data/analysis than either could independently, especially for off-nominal conditions. |