caa a22 4500 605453950 CHVBK 20210128100204.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10064-014-0596-6 doi (NATIONALLICENCE)springer-10.1007/s10064-014-0596-6 Effects of the ratio of flaw size to specimen size on cracking behavior [Elektronische Daten] [Xiao-Ping Zhang, Louis Wong, Sijing Wang] To investigate the size effects on the cracking behavior of flaw-containing specimens under compressive loading, rectangular parallelepiped specimens containing a single centrally located flaw are numerically loaded using the bonded-particle model (BPM). Effects of the ratio of flaw size (length) to specimen size on cracking behavior are carefully studied. The numerical results show that increasing the ratio of flaw size to specimen size within a reasonable range (≤0.33) has no obvious effects on the first crack initiation stress, but decreases the uniaxial compressive strength. In specimens of a high flaw size to specimen size ratio, the newly generated cracks have longer extension length, which allows for easier crack identification as compared with that of the low ratio specimens. These phenomena are also observed in the physical test. Based on the present study, recommendations are given on choosing appropriate specimen widths in the BPM simulation. The failures of flaw-containing specimens as well as the outward bending effect of narrow specimens are also discussed. Springer-Verlag Berlin Heidelberg, 2014 Size effects nationallicence Ratio of flaw size to specimen size nationallicence Bonded-particle model (BPM) nationallicence First cracks nationallicence Secondary cracks nationallicence Zhang Xiao-Ping Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Wong Louis School of Civil and Environmental Engineering, Nanyang Technological University, Block N1, Nanyang Avenue, 639798, Singapore, Singapore aut Wang Sijing Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/1(2015-02-01), 181-193 1435-9529 74:1<181 2015 74 10064 https://doi.org/10.1007/s10064-014-0596-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0596-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Xiao-Ping Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Wong Louis School of Civil and Environmental Engineering, Nanyang Technological University, Block N1, Nanyang Avenue, 639798, Singapore, Singapore aut NATIONALLICENCE 700 1- Wang Sijing Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/1(2015-02-01), 181-193 1435-9529 74:1<181 2015 74 10064