Discontinuous growth mechanisms of mode II crack under high-speed impact conditions

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Discontinuous growth mechanisms of mode II crack under high-speed impact conditions
	Ma W(马维); Ma W
	2008
会议名称	International Conference on Structural Integrity and Failure/International Conference on Failure Analysis and Maintenance Technologies
会议日期	JUL 09-11, 2008
会议地点	Perth, AUSTRALIA
关键词	Plate Impact Tests Dynamic Fracture Failure Mode Transition Intersonic Crack Extension Discontinuous Crack Growth Model Dynamic Fracture Shear Transitions
页码	169-173
通讯作者	Ma W
中文摘要	A recoverable plate impact testing technology has been used for studying the growth mechanisms of mode II crack. The results show that interactions of microcracks ahead of a crack tip cause the crack growth unsteadily. Failure mode transitions of materials were observed. Based on the observations, a discontinuous crack growth model was established. Analysis shows that the shear crack grows unsteady as the growth speed is between the Rayleigh wave speed c(R) and the shear wave speed c(s); however, when the growth speed approaches root 2c(s), the crack grows steadily. The transient microcrack growth makes the main crack speed to jump from subsonic to intersonic and the steady growth of all the sub-cracks leads the main crack to grow stably at an intersonic speed.
收录类别	CPCI-S
会议网址	http://www.scientific.net/AMR.41-42.169
会议录	Structural Integrity And Failure
会议录出版者	Stafa-Zurich
会议录出版地	Trans Tech Publications Ltd
语种	英语
ISSN号	1022-6680
ISBN号	978-0-87849-386-9
WOS记录号	WOS:000257176700023
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/25394]
专题	力学研究所_力学所知识产出(1956-2008)
通讯作者	Ma W
推荐引用方式 GB/T 7714	Ma W,Ma W. Discontinuous growth mechanisms of mode II crack under high-speed impact conditions[C]. 见:International Conference on Structural Integrity and Failure/International Conference on Failure Analysis and Maintenance Technologies. Perth, AUSTRALIA. JUL 09-11, 2008.http://www.scientific.net/AMR.41-42.169.