Research Area

Material behavior under extreme load shock, blast, and beyond

Energetic systems live and die by what happens in microseconds. CECD's mechanics and shock-physics program develops the constitutive models, multiscale frameworks, and validated codes that capture how materials deform, fail, and respond when struck, from the dislocation to the structure.

Strain rates

Quasi-static → 10⁸ s⁻¹

Length scales

Atomistic → continuum

Frameworks

FE · DDD · MD · Phonon BTE

Open codes

Validated with sponsors

Representative work

Recent investigations

Selected studies. Peer-reviewed work that captures the program's reach from atomistic defect mechanics to structural impact.

See Publications
J. Appl. Phys. 2023 Balakrishnan, VanGessel, Barnes, Doherty, Wilson, Boukouvalas, Fuge, Chung

Machine learning for shock compression with scarce data

Interpretable ML models extract Hugoniot behavior from sparse experimental datasets. Sidestepping the data-poverty problem that defeats classical regression.

Computer Methods 2017 VanGessel & Chung

Anisotropic full-Brillouin-zone Boltzmann transport

A general-purpose solver that captures real phonon dispersions and band-structure anisotropy, a foundation for microscale thermal design.

JMPS 2006 Clayton & Chung

Atomistic-to-continuum framework for nonlinear crystals

A foundational asymptotic-homogenization framework linking lattice statics to continuum field theories. Still in active use across the CECD portfolio.

Capabilities

What we bring to the work

Twenty-five years of code, frameworks, and validated benchmarks. Many co-developed with sponsor laboratories.

FE-based DDD

Parallel discrete dislocation dynamics in arbitrary geometries.

Phonon BTE solvers

3D anisotropic Brillouin-zone transport for thermal design.

Constitutive models

Crystal plasticity, dielectric-crystal electromechanics, viscoelastic creep.

Coupled atomistic-continuum

Multiscale frameworks bridging lattice statics to nonlinear continuum mechanics.

Partner on Mechanics & Shock Physics

Inquiries about sponsored research, graduate training, or technology transitions in this area can be directed to the center.