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Fracture characteristics of concrete subjected to impact loading |
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| Authors: | LIU HaiFeng LIU HaiYan & SONG WeiDong State Key Laboratory of Explosion Science Technology Beijing Institute of Technology Beijing China School of Civil Hydraulic Engineering Ningxia University Yinchuan School of Science |
| Affiliation: | LIU HaiFeng1,2,LIU HaiYan3 & SONG WeiDong1 1 State Key Laboratory of Explosion Science , Technology,Beijing Institute of Technology,Beijing 100081,China,2 School of Civil , Hydraulic Engineering,Ningxia University,Yinchuan 750021,3 School of Science |
| Abstract: | This paper takes concrete as a four-phase composite made of the intact matrix and three mutually perpendicular groups of penny-shaped micro-cracks. The intact matrix is assumed to be elastic,homogeneous and isotropic,and the micro-cracks are penny-shaped. Combined with the failure mechanism of concrete subjected to impact loading,a dynamic constitutive model for concrete is developed based on Mori-Tanaka's average stress concept and Eshelby's equivalent inclusion theory. Experimental results show that concr... |
| Keywords: | concrete micromechanics impact loading constitutive model |
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