Journal Published Online: 16 April 2018
Volume 46, Issue 6

Behavior and Law of Crack Propagation in the Dynamic-Static Superimposed Stress Field

CODEN: JTEVAB

Abstract

The aim of this study is to investigate the behavior and the law of crack propagation, particularly under the dynamic-static superimposed stress field in the poly(methyl methacrylate) specimens. We introduce a novel system of digital laser dynamic caustics experiments with a self-designed dynamic-static loading device. These specimens are divided into three groups and subjected to the static stress field, the dynamic stress field, and the stress superposition field, respectively. The conclusion can be obtained by comparing the crack length and the dynamic stress intensity factor of the main cracks during propagation under the three different stress fields. The static stress field significantly reduces the arrest toughness of the main cracks, which is the main reason for longer crack propagation.

Author Information

Yang, Renshu
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, Haidian District, P. R. China State Key Laboratory for Geomechanics and Deep Underground Engineering (Beijing), Beijing, Haidian District, P. R. China
Ding, Chenxi
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, Haidian District, P. R. China
Yang, Liyun
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, Haidian District, P. R. China
Zhang, Yufei
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, Haidian District, P. R. China
Xu, Peng
School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, Haidian District, P. R. China
Pages: 9
Price: $25.00
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Details
Stock #: JTE20170271
ISSN: 0090-3973
DOI: 10.1520/JTE20170271