4 papers
A finite viscoelastic constitutive model for low to high strain rate response of elastomers with application of strain rate-induced glass transition
Bibekananda Datta, Sushan Nakarmi, Nitin P. Daphalapurkar
Amorphous elastomers exhibit significant rate-stiffening and unique viscous flow characteristics across a wide range of strain rates, often undergoing glass transition above a stra…
Convolutional LSTM Surrogate for Mesoscale Hydrocode Simulations of Granular Wave Propagation
Kathleen Winona Vian Martinus, Sushan Nakarmi, Dawa Seo +1
Granular materials subjected to impact loading exhibit highly heterogeneous spatiotemporal dynamics governed by wave propagation, pore collapse, and grain-scale rearrangements. Mes…
A Comparison between Separately Calibrated P-α and Mesoscale Models for Weak Shock Compaction of Granular Sugar
Dawa Seo, Darby J. Luscher, Nitin Daphalapurkar
This study compares calibration strategies for predicting particle velocity in granular sugar subjected to weak shock loading, using measurements from flyer-plate impact experiment…
RSR-NF: Neural Field Regularization by Static Restoration Priors for Dynamic Imaging
Berk Iskender, Sushan Nakarmi, Nitin Daphalapurkar +2
Dynamic imaging involves the reconstruction of a spatio-temporal object at all times using its undersampled measurements. In particular, in dynamic computed tomography (dCT), only…