The Second Law as a constraint and admitting the approximate nature of constitutive assumptions

A Acharya - arXiv preprint arXiv:2412.19914, 2024 - arxiv.org
A scheme for treating the Second Law of thermodynamics as a constraint and accounting for
the approximate nature of constitutive assumptions in continuum thermomechanics is …

Second-order fast–slow dynamics of non-ergodic Hamiltonian systems: Thermodynamic interpretation and simulation

M Klar, K Matthies, C Reina, J Zimmer - Physica D: Nonlinear Phenomena, 2021 - Elsevier
A class of fast–slow Hamiltonian systems with potential U ɛ describing the interaction of non-
ergodic fast and slow degrees of freedom is studied. The parameter ɛ indicates the typical …

A second-order model of small-strain incompatible elasticity

S Amstutz, N Van Goethem - Mathematics and Mechanics of …, 2024 - journals.sagepub.com
This work deals with the modeling of solid continua undergoing incompatible deformations
due to the presence of microscopic defects like dislocations. Our approach relies on a …

[PDF][PDF] Scale-bridging of fast-slow systems in a thermodynamical setting

M Klar - 2021 - purehost.bath.ac.uk
In this thesis, we investigate a family of fast-slow Hamiltonian systems, which is
parametrised by a small scale parameter ε, indicating the typical timescale ratio of the fast …

How useful are formal hierarchies? A case study on averaging dislocation dynamics to define meso-macro plasticity

S Chatterjee, A Acharya - International Journal for Multiscale …, 2020 - dl.begellhouse.com
ABSTRACT A formal hierarchy of exact evolution equations is derived for physically relevant
space-time averages of state functions of microscopic dislocation dynamics. While such …

Second-order asymptotic expansion and thermodynamic interpretation of a fast–slow Hamiltonian system

M Klar, K Matthies, J Zimmer - Letters in Mathematical Physics, 2022 - Springer
This article includes a short survey of selected averaging and dimension reduction
techniques for deterministic fast–slow systems. This survey includes, among others …