Simulation of solid specimen for compression tests by discrete particles

Abstract

Physically adjustable concept and discrete ele-ment simulations aimed at generating a solid specimen for the compression test is investigated. The suggested scheme comprises triaxial compacting and load-free stabilisation after instantaneous fragmentation. Compacting involves the contact-less gas phase and transition to solid phase. Two compositions of monosized and polydispersed parti-cles are simulated numerically. Simulation quality during compacting is controlled by considering packing density, wall pressure and coordination number. Quality of the final state is evaluated by kinetic energy and shape distortion. Obtained numeric results were compared with other known solutions and data. Results showed that polydispersed structure more correctly represents macroscopic elasticity modulus.