Open Access
ARTICLE
Identification of the Discrete Element Model Parameters for Rock-Like Brittle Materials
Rui Chen1, 2, Yong Wang1, 2, Ruitao Peng1, 2, *, Shengqiang Jiang1, 2, Congfang Hu1, 2, Ziheng Zhao1, 2
1 School of Mechanical Engineering, Xiangtan University, Xiangtan, 411105, China.
2 Engineering Research Center for Complex Track Processing Technology and Equipment, Xiangtan University, Xiangtan, 411105, China.
* Corresponding Author: Ruitao Peng. Email: .
(This article belongs to this Special Issue: Numerical Modeling and Simulation for Structural Safety and Disaster Mitigation)
Computer Modeling in Engineering & Sciences 2020, 123(2), 717-737. https://doi.org/10.32604/cmes.2020.07438
Received 23 May 2019; Accepted 10 March 2020; Issue published 01 May 2020
Abstract
An inverse method for parameters identification of discrete element model
combined with experiment is proposed. The inverse problem of parameter identification
is transmitted to solve an optimization problem by minimizing the distance between the
numerical calculations and experiment responses. In this method, the discrete element
method is employed as numerical calculator for the forward problem. Then, the orthogonal
experiment design with range analysis was used to carry out parameters sensitivity
analysis. In addition, to improve the computational efficiency, the approximate model
technique is used to replace the actual computational model. The intergeneration projection
genetic algorithm (IP-GA) is employed as the optimization algorithm. Consequently, the
parameters of the discrete element model are determined. To verify the effectiveness and
accuracy of the inverse results, the comparisons of shape deviation experiments with
discrete element simulations are provided. It indicates that the effective and reliable
discrete element model parameters can be quickly obtained through several sets of
experimental data. Hence, this inverse method can be applied more widely to determine
the parameters of discrete element model for other materials.
Keywords
Cite This Article
Chen, R., Wang, Y., Peng, R., Jiang, S., Hu, C. et al. (2020). Identification of the Discrete Element Model Parameters for Rock-Like Brittle Materials.
CMES-Computer Modeling in Engineering & Sciences, 123(2), 717–737.
Citations