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Advanced engineering applications can demand that materials continue to perform in environments far beyond those typically studied. Such environments include but are not limited to extreme temperatures, intermediate to high strain rates, and environments where chemical processes are taking place. Understanding the behavior of materials in these environments can in some cases require detailed understanding of the microstructural response in addition to the bulk behavior requiring the incorporation of length-scale effects and other non-classical approaches. NSI materials research capabilities involve a suite of computational tools for analysis of:

• Efficient simulation of heterogeneous materials through higher order continuum techniques
• Upscaling direct numeric simulations of microscale behaviors to inform higher order continuum material models
• Multiphase material behavior at large deformation
• Materials for extreme environments: fiber composites, ultra-high temperature ceramics, porous ablators
• Material response to high-speed flows: gas-surface interaction, in-depth effects, corrosion, oxidation, ablation, plume dynamics, optical properties
• Laser-material interactions: material interrogation, material degradation, plasma plume shielding

Applications: Hypersonics, energetic materials, directed energy, sensors

Challenges: Multi-physics problems, computational tools, material experimentation, verification and validation, uncertainty quantification

ÃÛÌÇÖ±²¥ Strengths: Computational mechanics, generalized continuum, multiscale modeling, uncertainty quantification, tools for verification and validation, kinetic modeling, coupled flow-material analysis · NSI Research Leaders: Daniil Andrienko, Nathan Miller, Nicholas Campbell