Journal
ENGINEERING FRACTURE MECHANICS
Volume 85, Issue -, Pages 88-102Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2012.02.013
Keywords
Dynamic fracture; Concrete; Uniaxial tension; Crack branching; Crack propagation
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Dynamic fracture of concrete is numerically evaluated using uniaxial tension and L-specimen. Previous work by authors demonstrated interesting aspects such as crack branching beyond threshold crack speed. Uniaxial tensile behaviour of concrete under dynamic loads is difficult to study even numerically due to local problems near loading points. A specimen is designed to numerically assess the dynamic tensile behaviour that seems to be practical enough for carrying out experimental studies as well. The results demonstrate various phenomena such as crack branching, intercepting and re-branching. Dynamic behaviour of L-specimen shows that the direction of crack propagation strongly depends on displacement rate. (C) 2012 Elsevier Ltd. All rights reserved.
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