17 papers
Anisotropic Thermalization in Far-from-Equilibrium Flows
Arnab Debnath, Timothy Breitzman, Kaushik Dayal
We present a deterministic discontinuous Galerkin (DG) finite-element solution of the Boltzmann equation, without moment-closure approximations, under a class of far-from-equilibri…
Nonlocal Linear Instability Drives the Initiation of Motion of Rational and Irrational Twin Interfaces
Chang-Tsan Lu, Anthony Rollett, Kaushik Dayal
Twin boundaries play a central role in the functional behavior of martensitic materials, yet the mechanisms governing the initiation of their motion remain poorly understood for tw…
Stress Asymmetry in Hard Magnetic Soft Materials
H. Gökçen Güner, Francois Barthelat, John D. Clayton +3
Hard magnetic soft materials -- soft polymers embedded with hard magnetic particles -- are modeled using continuum magnetomechanical formulations in which the deformation and the m…
Aeroacoustic signatures reveal fast transient dynamics of vapor-jet-driven cavity oscillations in metallic additive manufacturing
Haolin Liu, S. Kiana Naghibzadeh, Zhongshu Ren +12
Aeroacoustic emissions from intense evaporation are widely measured yet often treated as noisy byproducts and used mainly in empirical monitoring. Here, we show that airborne sound…
A Kinetic Phase-Field Model of Diffusion Bonding: A Nonlocal Approach to Interface Coalescence
Maryam Khodadad, Noel Walkington, Suresh Kalyanam +2
Conventional phase-field models often drive solid-solid interfaces to coalesce when in close proximity. This feature limits their use for processes like diffusion bonding, where th…
Two-Scale Analysis of the Electrostatics of Dielectric Crystals: Emergence of Polarization Density and Boundary Charges
Shoham Sen, Yang Wang, Timothy Breitzman +1
Ionic crystals, such as solid electrolytes and complex oxides, are central to modern technologies for energy storage, sensing, actuation, and other functional applications. An impo…