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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Yunzhu Cai,Huaicui Li.Constitutive Laws for Visco-plastic Porous Medium Shaped by Regularly Distributed Circular Particles[J].Journal of Harbin Institute Of Technology(New Series),2016,23(6):1-8.DOI:10.11916/j.issn.1005-9113.2016.06.001.
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Constitutive Laws for Visco-plastic Porous Medium Shaped by Regularly Distributed Circular Particles
Author NameAffiliation
Yunzhu Cai College of Civil Engineering, Tongji University, Shanghai 200092, China 
Huaicui Li Shanghai Construction Group Co. Ltd., Shanghai 200080, China 
Abstract:
A numerical study is presented, using a homogenization technique to consider the plain strain problem of visco-plastic porous medium shaped by regularly distributed circular particles. Based on a rigid plastic material, the paper derives the macroscopic constitutive laws for homogenous equivalent medium. By changing the shape parameter of circular particles, the effect of pore shape on macroscopic constitutive laws is explored. Yield surfaces with different pore shapes are obtained. About voids, a two-scale conception is introduced, which regards main void as macroscopic scale and secondary cavities as microscopic scale. The macroscopic potential involving main and secondary voids is achieved. The proposed macroscopic constitutive law taking microscopic features as influence factors is helpful for exploring the macroscopic mechanical properties of porous medium when numerical simulation is required.
Key words:  porous medium  visco-plastic material  macroscopic constitutive laws  pore shape  two-scale voids
DOI：10.11916/j.issn.1005-9113.2016.06.001
Clc Number:TB303
Fund:

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