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A novel systematic Method to estimate the Contact Parameters of Particles in Discrete Element Simulations of Soil

Lichtenheldt, Roy (2015) A novel systematic Method to estimate the Contact Parameters of Particles in Discrete Element Simulations of Soil. In: Particle-based Methods - Fundamentals and Applications, 4, pp. 430-441. International Center for Numerical Methods in Engineering (CIMNE). IV International Conference on Particle-based Methods - Fundamentals and Applications; PARTICLES 2015, 28.-30.Sept. 2015, Barcelona, Spanien. ISBN 978-84-944244-7-2

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Official URL: http://congress.cimne.com/particles2015/fron↲tal/doc/E-book_PARTICLES_2015.pdf

Abstract

Recent advances in simulation of granular matter and computation hardware let the discrete element method (DEM) evolve into the field of dynamic simulation of soils, enabling to simulate physical effects of soil deformation at particle interaction-scale. However, DEM is still lacking a generally accepted method to determine material-specific but application-independent particle contact parameters. In this article a novel, system- atic method to directly determine the contact parameters of the particles is proposed. These parameters are divided into two groups: 1) independent parameters whose values are measurable, real soil properties and 2) dependent parameters whose values are set according to sufficient, modeling-intrinsic requirements. With the proposed parameter estimation strategy, the number of parameters which actually need to be chosen by look- up tables has been decreased to one single parameter. Additionally, the look-up table is only computed once and reused for every new type of soil. Thus the method is time efficient and does not repeatedly need preliminary calibration simulations and the time required to develop a mature and valid model is drastically reduced. In the article the pa- rameter setting method is validated for a quartz sand, used to simulate the impact-driven penetration of the HP3-Mole and its corresponding experimental measurements.

Item URL in elib:https://elib.dlr.de/99022/
Document Type:Conference or Workshop Item (Speech)
Title:A novel systematic Method to estimate the Contact Parameters of Particles in Discrete Element Simulations of Soil
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lichtenheldt, RoyDLR-SRUNSPECIFIED
Date:28 September 2015
Journal or Publication Title:Particle-based Methods - Fundamentals and Applications
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:4
Page Range:pp. 430-441
Editors:
EditorsEmail
Onate, E.CIMNE
Bischoff, M.Univerität Stuttgart
Owen, D.R.J.Swansea University
Wriggers, P.Leibniz Universität Hannover
Zhodi, T.University of California
Publisher:International Center for Numerical Methods in Engineering (CIMNE)
Series Name:PARTICLE-BASED METHODS - Fundamentals and Applications
ISBN:978-84-944244-7-2
Status:Published
Keywords:DEM, Discrete Element Simulation, Distinct Element Simulation, Planetary Exploration, Particle method, Regolith, Soil modeling, Parameter identification, parameter estimation
Event Title:IV International Conference on Particle-based Methods - Fundamentals and Applications; PARTICLES 2015
Event Location:Barcelona, Spanien
Event Type:international Conference
Event Dates:28.-30.Sept. 2015
Organizer:CIMNE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt InSight, R - Explorationstechnologie (old), R - Robotische Exploration (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Space System Dynamics
Deposited By: Lichtenheldt, Roy
Deposited On:02 Nov 2015 16:27
Last Modified:11 Jul 2019 14:00

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