Effects of particle stiffness on mechanical response of granular solid under confined compression

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Abstract

The purpose of this study is to investigate the effects of particle stiffness on the mechanical response between a granular assembly and an acrylic cylinder under confined compression. Variations of wall strain are measured through strain gages at three given heights and used to calculate the relevant stresses through a generalized Hooke's law, Steel spheres and polystyrene spheres are selected to characterize the effects of particle stiffness, Experimental results show that a granular assembly of highstiffness particles is able to transmit more vertical force, dissipates less energy in the lateral deformation, and causes a smaller frictional effect between particles and wall.

Original languageEnglish
Pages (from-to)143-152
Number of pages10
JournalProcedia Engineering
Volume79
DOIs
StatePublished - 2014
Event37th National Conference on Theoretical and Applied Mechanics, NCTAM 2013, Conjoined with the 1st International Conference on Mechanics, ICM 2013 - Hsinchu, Taiwan
Duration: 8 Nov 20139 Nov 2013

Keywords

  • Comfined compression
  • Granular material
  • Mechanical response
  • Particle stiffness

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