Random Initial Model
If particles are arranged regularly in initial model,
failure behavior is strongly affected by direction of
the regularity like DEM.
Simple procedure compared with packing in DEM
Step -1 Fix boundary particles
and a part of internal particles
Step -2 Homogenize particle density
Fall by Gravity
Regular initial modeling
See “E-MPS-fall.ppt” for the detail
Random initial modeling
Random Initial Model for layer 1 and 2
Hypothetical model for random initial model demonstration
Three Layers Model Step -1 Fixed particles
Layer 1
Layer 2
Layer 3
Select boundary particles
and a part of internal
particles
Give small move to the
internal particles
according to uniform
random number
Fix the boundary ,
the selected internal
and non-failure
particles
3
Random Initial Model
Step-2 Homogenization of particle density
Pressure calculated by particle density
High pressure (density)
Low pressure (density)
4

TROPHIC INFANT

PowerPoint