首页|Investigation of micro-scale shear response of sand-rubber granule mixture in terms of particle shape and grain scale deformability effects
Investigation of micro-scale shear response of sand-rubber granule mixture in terms of particle shape and grain scale deformability effects
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In this study,the effects of particle shape of rigid sand and soft rubber materials on macro-scale shear response were reasoned based on micro-scale parameters.For this purpose,first,the shape properties of three different sand and two different rubber samples were quantified using image processing tech-niques,and the contact model parameters were calibrated through physical experiments.The direct shear test was simulated in a two-dimensional discrete element software with realistic particle forms.The soft nature of rubber particles was reflected using body-centered cubic packing with a linear-parallel bond contact model.As a result,coordination number,distribution of contact forces(i.e.,strong contact,and fabric anisotropy),and contact sliding were derived by the numerical analyses.It has been observed that the particle shape leads to distinctive micro-scale responses due to the variations in the stiffness of the contacts.
Particle shapeSandRubberShear responseMicro-scale responseDiscrete element method
Abdulmuttalip Ari、Suat Akbulut
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Department of Civil Engineering,Yildiz Technical University,Istanbul,34220,Turkey
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