The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves

IMECH-IR > 力学所知识产出(1956-2008)

	The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves
	Ma W(马维); Duan ZP(段祝平); Ma, W (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
发表期刊	Acta Mechanica Sinica
	2000
卷号	16 期号:4 页码:335-346
ISSN	0567-7718
摘要	In this paper, an improved plate impact experimental technique is presented for studying dynamic fracture mechanism of materials, under the conditions that the impacting loading is provided by a single pulse and the loading time is in the sub-microsecond range. The impacting tests are carried out on the pressure-shear gas gun. The loading rate achieved is dK/dt similar to 10(8) MPa m(1/2) s(-1). With the elimination of influence of the specimen boundary, the plane strain state of a semi-infinite crack in an infinite elastic plate is used to simulate the deformation fields of crack tip. The single pulses are obtained by using the "momentum trap" technique. Therefore, the one-time actions of the single pulse are achieved by eradicating the stress waves reflected from the specimen boundary or diffracted from the crack surfaces. In the current study, some important phenomena have been observed. The special loading of the single pulse can bring about material damage around crack tip, and affect the material behavior, such as kinking and branching of the crack propagation. Failure mode transitions from mode I to mode II crack are observed under asymmetrical impact conditions. The mechanisms of the dynamic crack propagation are consistent with the damage failure model.
学科领域	力学
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000165633700005
关键词[WOS]	PROPAGATION
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/17578
专题	力学所知识产出(1956-2008)
通讯作者	Ma, W (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Ma W,Duan ZP,Ma, W . The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves[J]. Acta Mechanica Sinica,2000,16,4,:335-346.
APA	马维,段祝平,&Ma, W .(2000).The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves.Acta Mechanica Sinica,16(4),335-346.
MLA	马维,et al."The investigation on dynamic fracture behavour of materials under compressive-shear combined stress waves".Acta Mechanica Sinica 16.4(2000):335-346.

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