Loading rate effects on cracking behavior of flaw-contained specimens under uniaxial compression

doi:10.1007/s10704-012-9803-2

	Loading rate effects on cracking behavior of flaw-contained specimens under uniaxial compression
	Zhang, Xiao-Ping 1,2; Wong, Louis Ngai Yuen 1
刊名	INTERNATIONAL JOURNAL OF FRACTURE
	2013-03-01
卷号	180 期号:1 页码:93-110
关键词	Loading rate Cracking processes Flaw-contained specimen Bonded-particle model (BPM)
ISSN号	0376-9429
DOI	10.1007/s10704-012-9803-2
文献子类	Article
英文摘要	To investigate the loading rate effects on the cracking processes of flaw-contained specimens under compressive loading, rectangular parallelepiped specimens containing centrally located single and double flaw(s) are numerically loaded using the bonded-particle model (BPM). The study reveals that the uniaxial compressive stress ( and coalescence stress ( increase significantly, while the first crack initiation stress ( only subtly increases with the increase of loading rate. The trajectories of the first and secondary cracks become shorter while the amount of discrete micro-cracks increases as the loading rate increases. The mode of coalescence cracks changes from tensile-segments-dominant to shear-band-dominant when the loading rate increases. The shape of the stress-strain curves of specimens loaded at different rates also varies. Based on the present study, an upper limit of loading rate of 0.08 m/s deems to be acceptable for cracking processes analysis under static load using the BPM.
WOS关键词	BONDED-PARTICLE MODEL ; ROCK-LIKE MATERIALS ; BRITTLE ROCK ; STRAIN-RATE ; INITIATION TOUGHNESS ; TRIAXIAL COMPRESSION ; MOLDED GYPSUM ; FRACTURE ; COALESCENCE ; SIMULATION
WOS研究方向	Materials Science ; Mechanics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000314505800006
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/87364]
专题	中国科学院地质与地球物理研究所
通讯作者	Wong, Louis Ngai Yuen
作者单位	1.Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiao-Ping,Wong, Louis Ngai Yuen. Loading rate effects on cracking behavior of flaw-contained specimens under uniaxial compression[J]. INTERNATIONAL JOURNAL OF FRACTURE,2013,180(1):93-110.
APA	Zhang, Xiao-Ping,&Wong, Louis Ngai Yuen.(2013).Loading rate effects on cracking behavior of flaw-contained specimens under uniaxial compression.INTERNATIONAL JOURNAL OF FRACTURE,180(1),93-110.
MLA	Zhang, Xiao-Ping,et al."Loading rate effects on cracking behavior of flaw-contained specimens under uniaxial compression".INTERNATIONAL JOURNAL OF FRACTURE 180.1(2013):93-110.