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Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF

The original DDARF (discontinuous deformation analysis for rock failure) can only generate uniform grids, and the increase in the number of grids reduces the efficiency of calculation, which limits the use of DDARF in large-scale geotechnical engineering. This is a problem that needs to be solved in...

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Main Authors: Ma, Hai Ping, Nik Daud, Nik Norsyahariati
Format: Article
Published: Multidisciplinary Digital Publishing Institute 2022
Online Access:http://psasir.upm.edu.my/id/eprint/102030/
https://www.mdpi.com/2076-3417/12/12/6095
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spelling my.upm.eprints.1020302023-06-17T22:43:23Z http://psasir.upm.edu.my/id/eprint/102030/ Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF Ma, Hai Ping Nik Daud, Nik Norsyahariati The original DDARF (discontinuous deformation analysis for rock failure) can only generate uniform grids, and the increase in the number of grids reduces the efficiency of calculation, which limits the use of DDARF in large-scale geotechnical engineering. This is a problem that needs to be solved in the original DDARF. A new method is proposed in this paper to optimize the generation of grids in DDARF, and the optimized DDARF can generate heterogeneous grids. The model of the Brazilian disc-splitting experiment was established by using the optimized DDARF, fine grids were generated in the crack propagation region of the model, andsparse grids were generated at the edge of the model. The simulation results show that the Brazilian disc-splitting experiment simulated by the optimized DDARF is more consistent with the physical experiment than the original DDARF. The optimized DDARF and the original DDARF were used to generate a heterogeneous grid model and a uniform grid model, respectively, to simulate the uniaxial compression experiment. Through the analysis of the experimental results, it can be concluded that the optimized DDARF is more accurate in simulating the cracking and propagation of joints in rock blocks, the results of optimized DDARF are more consistent with the simulation results of other software, and the computational efficiency of the optimized DDARF simulation experiment is much higher than that of the original DDARF at the same time. Multidisciplinary Digital Publishing Institute 2022 Article PeerReviewed Ma, Hai Ping and Nik Daud, Nik Norsyahariati (2022) Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF. Applied Sciences, 12 (12). art. no. 6095. pp. 1-16. ISSN 2076-3417 https://www.mdpi.com/2076-3417/12/12/6095 10.3390/app12126095
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description The original DDARF (discontinuous deformation analysis for rock failure) can only generate uniform grids, and the increase in the number of grids reduces the efficiency of calculation, which limits the use of DDARF in large-scale geotechnical engineering. This is a problem that needs to be solved in the original DDARF. A new method is proposed in this paper to optimize the generation of grids in DDARF, and the optimized DDARF can generate heterogeneous grids. The model of the Brazilian disc-splitting experiment was established by using the optimized DDARF, fine grids were generated in the crack propagation region of the model, andsparse grids were generated at the edge of the model. The simulation results show that the Brazilian disc-splitting experiment simulated by the optimized DDARF is more consistent with the physical experiment than the original DDARF. The optimized DDARF and the original DDARF were used to generate a heterogeneous grid model and a uniform grid model, respectively, to simulate the uniaxial compression experiment. Through the analysis of the experimental results, it can be concluded that the optimized DDARF is more accurate in simulating the cracking and propagation of joints in rock blocks, the results of optimized DDARF are more consistent with the simulation results of other software, and the computational efficiency of the optimized DDARF simulation experiment is much higher than that of the original DDARF at the same time.
format Article
author Ma, Hai Ping
Nik Daud, Nik Norsyahariati
spellingShingle Ma, Hai Ping
Nik Daud, Nik Norsyahariati
Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
author_facet Ma, Hai Ping
Nik Daud, Nik Norsyahariati
author_sort Ma, Hai Ping
title Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
title_short Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
title_full Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
title_fullStr Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
title_full_unstemmed Jointed rock failure mechanism: a method of heterogeneous grid generation for DDARF
title_sort jointed rock failure mechanism: a method of heterogeneous grid generation for ddarf
publisher Multidisciplinary Digital Publishing Institute
publishDate 2022
url http://psasir.upm.edu.my/id/eprint/102030/
https://www.mdpi.com/2076-3417/12/12/6095
_version_ 1769844430451245056
score 13.211869

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