Monte Carlo simulations of meso-scale dynamic compressive behavior of concrete based on X-ray computed tomography images
作者: Y.J. HuangZ.J. YangX.W. ChenG.H. Liu
作者单位: 1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
2Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China
刊名: International Journal of Impact Engineering, 2016, Vol.97 , pp.102-115
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijimpeng.2016.06.009
关键词: Dynamic damage and fractureMeso-scale modelingConcreteIn-situ X-ray computed tomographyImage-based modeling
英文摘要: Abstract(#br)The dynamic damage and fracture behavior of concrete under compression with strain rate up to 100 s −1 is investigated by Monte Carlo simulations (MCSs) of realistic meso-scale models based on high-resolution micro-scale X-ray computed tomography (XCT) images, using the concrete damaged plasticity (CDP) model. For a given strain rate, 93 2D XCT images of a 37.2 mm concrete cube are simulated to obtain statistical results of macroscopic stress–strain curves. The predicted compressive dynamic increase factor (CDIF)–strain rate curve is in good agreement with existing experimental data and empirical curves. The effects of aggregate/void area fraction on dynamic compressive strength are also analyzed, and an augmented compressive strength-strain rate relation considering the void...
全文获取路径: Elsevier  (合作)
影响因子:1.681 (2012)