A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock

To investigate the brittle creep failure process of rock material, the time-dependent properties of brittle rocks under the impact of homogeneity are analyzed by the numerical simulation method, RFPA-Creep (2D). Deformation is more palpable for more homogeneous rock material under the uniaxial creep...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hao-Zhe Chen, Zhu-Shan Shao, Dong-Dong Jin, Zhe Zhang, Dong-Bo Zhou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	creep homogeneity stress level steady creep rate dilatancy failure pattern Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/7d0db000013c48aab56d4bedfc729c01
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7d0db000013c48aab56d4bedfc729c01
record_format	dspace
spelling	oai:doaj.org-article:7d0db000013c48aab56d4bedfc729c012021-11-25T18:13:51ZA Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock10.3390/ma142268181996-1944https://doaj.org/article/7d0db000013c48aab56d4bedfc729c012021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6818https://doaj.org/toc/1996-1944To investigate the brittle creep failure process of rock material, the time-dependent properties of brittle rocks under the impact of homogeneity are analyzed by the numerical simulation method, RFPA-Creep (2D). Deformation is more palpable for more homogeneous rock material under the uniaxial creep loading condition. At a low stress level, diffusion creep may occur and transition to dislocation creep with increasing applied stress. The law for increasing creep strain with the homogeneity index under a constant confined condition is similar to the uniaxial case, and dislocation creep tends to happen with increasing confining pressure for the same homogeneity index. The dilatancy index reaches its maximum at a high stress level when rock approaches failure, and the evolution of the dilatancy index with the homogeneity index under the same confining pressure is similar to the uniaxial case and is more marked than that under the unconfined condition. Both uniaxial and triaxial creep failure originate from the ductile damage accumulation inside rock. The dominant shear-type failure is exhibited by uniaxial creep and the conventional compression case presents the splitting-based failure mode. Under confining pressure, the creep failure pattern is prone to shear, which is more notable for the rock with higher homogeneity.Hao-Zhe ChenZhu-Shan ShaoDong-Dong JinZhe ZhangDong-Bo ZhouMDPI AGarticlecreephomogeneitystress levelsteady creep ratedilatancyfailure patternTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6818, p 6818 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	creep homogeneity stress level steady creep rate dilatancy failure pattern Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	creep homogeneity stress level steady creep rate dilatancy failure pattern Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Hao-Zhe Chen Zhu-Shan Shao Dong-Dong Jin Zhe Zhang Dong-Bo Zhou A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
description	To investigate the brittle creep failure process of rock material, the time-dependent properties of brittle rocks under the impact of homogeneity are analyzed by the numerical simulation method, RFPA-Creep (2D). Deformation is more palpable for more homogeneous rock material under the uniaxial creep loading condition. At a low stress level, diffusion creep may occur and transition to dislocation creep with increasing applied stress. The law for increasing creep strain with the homogeneity index under a constant confined condition is similar to the uniaxial case, and dislocation creep tends to happen with increasing confining pressure for the same homogeneity index. The dilatancy index reaches its maximum at a high stress level when rock approaches failure, and the evolution of the dilatancy index with the homogeneity index under the same confining pressure is similar to the uniaxial case and is more marked than that under the unconfined condition. Both uniaxial and triaxial creep failure originate from the ductile damage accumulation inside rock. The dominant shear-type failure is exhibited by uniaxial creep and the conventional compression case presents the splitting-based failure mode. Under confining pressure, the creep failure pattern is prone to shear, which is more notable for the rock with higher homogeneity.
format	article
author	Hao-Zhe Chen Zhu-Shan Shao Dong-Dong Jin Zhe Zhang Dong-Bo Zhou
author_facet	Hao-Zhe Chen Zhu-Shan Shao Dong-Dong Jin Zhe Zhang Dong-Bo Zhou
author_sort	Hao-Zhe Chen
title	A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
title_short	A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
title_full	A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
title_fullStr	A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
title_full_unstemmed	A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock
title_sort	numerical investigation into the effect of homogeneity on the time-dependent behavior of brittle rock
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7d0db000013c48aab56d4bedfc729c01
work_keys_str_mv	AT haozhechen anumericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT zhushanshao anumericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT dongdongjin anumericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT zhezhang anumericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT dongbozhou anumericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT haozhechen numericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT zhushanshao numericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT dongdongjin numericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT zhezhang numericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock AT dongbozhou numericalinvestigationintotheeffectofhomogeneityonthetimedependentbehaviorofbrittlerock
_version_	1718411446180642816

A Numerical Investigation into the Effect of Homogeneity on the Time-Dependent Behavior of Brittle Rock

Ejemplares similares