Breaking Mechanism and Damage Evolution Rule of Ultra-High-Pressure Water Jet Impacting Steel Fiber Reinforced Concrete

نویسندگان

چکیده

Based on smooth particle hydrodynamics (SPH) method, this paper carried out the numerical simulation of ultra-high-pressure water jet (UHP-WJ) impacting steel fiber reinforced concrete (SFRC), verified established model by UHP-WJ SFRC and computed tomography (CT) scanning experiments, explored breaking mechanism damage evolution rule impacted UHP-WJ. Results indicate that in weak effect zone fiber, failure is generated developed along axial direction into a bowl-shaped crater with combining action compressive stress shear stress. In affected area due to inhomogeneity contact concrete, concentration produced, causing formation propagated crack fiber. And has an obstruction development broken bodies upper lower sides With sustained UHP-WJ, intense radiation waves takes place fracture finally fuse. addition, based CT scans digital image processing technology, also comparatively analyzed internal fragmentations ordinary subjected impact, it found compared there smaller dimension difficult engender macrocrack for SFRC, higher attenuation speed radial directions.

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ژورنال

عنوان ژورنال: Advances in Civil Engineering

سال: 2021

ISSN: ['1687-8086', '1687-8094']

DOI: https://doi.org/10.1155/2021/6697409