Experimental study and simulation analysis of concrete crack propagation under impact load
ZHANG Hua1,GUO Jixin1,FU Yuzhen1,Gao Qun2
1.College of Civil and Transportation Engineering, HoHai University, Nanjing 210098, China；
2.Jiangsu Research Institute of Building Science Co.,Ltd., Nanjing 210008,China
Abstract：The radial spitting crack experiment were conducted by using improved Hopkinson pressure bar (SHPB) for flattened Brazilian disc (FBD) and cracked straight through flattened Brazilian disc (CSTFBD) under different stain rate, splitting tensile stress-radial strain curves of flattened Brazilian disc, dynamic elastic modulus, peak stress, peak strain and tensile strain rate sensitive coefficient effects of concrete with three different strength grades were obtained. In addition, the influence of pre-crack with different angle on fracture toughness of cracked straight through flattened Brazilian disc and the relationship between composite ratio of mixed mode cracks and loading angle. The crack propagation and failure mechanism were studied and the results of experiments and XFEM simulation were compared. The results show that the growth trends of cracks by test are consistent with those of numerical simulation.
收稿日期: 2015-02-11
出版日期: 2016-08-25
引用本文:
张华1，郭继鑫1，傅玉珍1，高群2，王斌1. 冲击作用下混凝土裂纹扩展试验研究及数值模拟[J]. 振动与冲击, 2016, 35(17): 107-112.
ZHANG Hua1,GUO Jixin1,FU Yuzhen1,Gao Qun2. Experimental study and simulation analysis of concrete crack propagation under impact load. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(17): 107-112.
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