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A Simple Model for Elastic-Plastic Contact of Granular Geomaterials
Joint Authors
Wang, Jian
Li, Qimin
Yang, Changwei
Huang, Yidan
Zhou, Caizhi
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-03
Country of Publication
Egypt
No. of Pages
11
Abstract EN
We propose a simple elastic-plastic contact model by considering the interaction of two spheres in the normal direction, for use in discrete element method (DEM) simulations of geomaterials.
This model has been developed by using the finite element method (FEM) and nonlinear fitting methods, in the form of power-law relation of the dimensionless normal force and displacement.
Only four parameters are needed for each loading-unloading contact process between two spheres, which are relevant to material properties evaluated by FEM simulations.
Within the given range of material properties, those four parameters can be quickly accessed by interpolating the data appended or by regression functions supplied.
Instead of the Von Mises (V-M) yield criterion, the Drucker–Prager (D-P) criterion is used to describe the yield behavior of contacting spheres in this model.
The D-P criterion takes the effects of confining pressure, the intermediate principal stress, and strain rate into consideration; thus, this model can be used for DEM simulation of geomaterials as well as other granular materials with pressure sensitivity.
American Psychological Association (APA)
Wang, Jian& Li, Qimin& Yang, Changwei& Huang, Yidan& Zhou, Caizhi. 2018. A Simple Model for Elastic-Plastic Contact of Granular Geomaterials. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121463
Modern Language Association (MLA)
Wang, Jian…[et al.]. A Simple Model for Elastic-Plastic Contact of Granular Geomaterials. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1121463
American Medical Association (AMA)
Wang, Jian& Li, Qimin& Yang, Changwei& Huang, Yidan& Zhou, Caizhi. A Simple Model for Elastic-Plastic Contact of Granular Geomaterials. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1121463
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121463