26 citations · 54 across the 9 of their papers we have counts for
8 papers · 1 filter
Trainable amorphous matter: tuning yielding by mechanical annealing
Maitri Mandal, Pappu Acharya, Rituparno Mandal +1
Living organisms can demonstrate highly adaptable and sophisticated responses using memory resulting from repeated exposure to external conditions or training. However, realizing s…
Modelling the evolution of flow-induced anisotropy of concentrated suspensions
Pappu Acharya, Romain Mari
Suspensions, which exhibit complex behaviors such as shear thickening, thinning, and jamming, are prevalent in nature and industry. However, predicting the mechanical properties of…
Shear jamming transition in alternating shear rotation for frictional and frictionless suspensions
Pappu Acharya, Martin Trulsson
Alternating shear rotations in dense suspensions have recently shown the ability to reduce both viscosity and dissipation per strain (at a fixed global shear rate). Here, we study…
Optimum dissipation by cruising in dense suspensions
Pappu Acharya, Martin Trulsson
Dense suspensions tend to shear jam at large packing fractions. However, it has recently been shown that various oscillation protocols can unjam as well as reduce viscosity and dis…
Emergent power-law interactions in disordered crystals
Pappu Acharya, Debankur Das, Surajit Sengupta +1
We derive exact results for the fluctuations in energy produced by microscopic disorder in near-crystalline athermal systems. Our formalism captures the heterogeneity in the elasti…
Disorder Perturbation Expansion for Athermal Crystals
Pappu Acharya, Debankur Das, Kabir Ramola
We introduce a perturbation expansion for athermal systems that allows an exact determination of displacement fields away from the crystalline state as a response to disorder. We s…
Long-range correlations in pinned athermal networks
Debankur Das, Pappu Acharya, Kabir Ramola
We derive exact results for displacement fields that develop as a response to external pinning forces in two dimensional athermal networks. For a triangular lattice arrangement of…
Athermal fluctuations in disordered crystals
Pappu Acharya, Surajit Sengupta, Bulbul Chakraborty +1
We analyze the fluctuations in particle positions and inter-particle forces in disordered jammed crystals in the limit of weak disorder. We demonstrate that such athermal systems a…