Geomechanics and Engineering A
Volume 17, Number 4, 2019, pages 405-411
DOI: 10.12989/gae.2019.17.4.405
Mechanistic representation of the grading-dependent aggregates resiliency using stress transmission column
Yifei Sun, Zhongtao Wang and Yufeng Gao
Abstract
A significant influence of the particle size distribution on the resilient behaviour of granular aggregates was usually observed in laboratory tests. However, the mechanisms underlying this phenomenon were rarely reached. In this study, a mechanistic model considering particle breakage is proposed. It is found to be the combined effects of the coefficient of uniformity and the size range between maximum and minimum particle sizes that influences the resilient modulus of granular aggregates. The resilient modulus is found to undergo reduction with evolution of particle breakage by shifting the initial particle size distribution to a broader one.
Key Words
fractional plastic flow rule; 3d stress state; transformed stress; state dependence
Address
Yifei Sun and Yufeng Gao: Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,
College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
Zhongtao Wang: State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China