Skip navigation

An entropy-stable Smooth Particle Hydrodynamics algorithm for large strain thermo-elasticity

An entropy-stable Smooth Particle Hydrodynamics algorithm for large strain thermo-elasticity

Ghavamian, Ataollah, Lee, Chun Hean, Gil, Antonio J., Bonet, Javier ORCID: 0000-0002-0430-5181, Heuzé, Thomas and Stainier, Laurent ORCID: 0000-0001-6719-6616 (2021) An entropy-stable Smooth Particle Hydrodynamics algorithm for large strain thermo-elasticity. Computer Methods in Applied Mechanics and Engineering, 379:113736. ISSN 0045-7825 (doi:

[img] PDF (Author Accepted Manuscript)
31838 BONET_An_Entropy-Stable_Smooth_Particle_(AAM)_2021.pdf - Accepted Version
Restricted to Registered users only until 10 March 2022.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (38MB) | Request a copy


This paper presents a novel Smooth Particle Hydrodynamics computational framework for the simulation of large strain fast solid dynamics in thermo-elasticity. The formulation is based on the Total Lagrangian description of a system of first order conservation laws written in terms of the linear momentum, the triplet of deformation measures (also known as minors of the deformation gradient tensor) and the total energy of the system, extending thus the previous work carried out by some of the authors in the context of isothermal elasticity and elasto-plasticity [1-3]. To ensure the stability (i.e. hyperbolicity) of the formulation from the continuum point of view, the internal energy density is expressed as a polyconvex combination of the triplet of deformation measures and the entropy density. Moreover, and to guarantee stability from the spatial discretisation point of view, consistently derived Riemann-based numerical dissipation is carefully introduced where local numerical entropy production is demonstrated via a novel technique in terms of the time rate of the so-called ballistic free energy of the system. For completeness, an alternative and equally competitive formulation (in the case of smooth solutions), expressed in terms of the entropy density, is also implemented and compared. A series of numerical examples is presented in order to assess the applicability and robustness of the proposed formulations, where the Smooth Particle Hydrodynamics scheme is benchmarked against an alternative in-house Finite Volume Vertex Centred implementation.

Item Type: Article
Uncontrolled Keywords: Conservation laws, SPH, Upwind, Riemann Solver, Explicit dynamics, Thermo-elasticity
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Vice-Chancellor's Group
Last Modified: 13 Jul 2021 10:20
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics