Data Files for “Balls in a Box” Tutorial

cmlinear_simple.p3dat

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; fname: cmlinear_simple.p3dat
;
;  Exercise the Linear contact model
;==============================================================================
model new
model title 'Balls in a box'

; Set the domain extent
model domain extent -10.0 10.0

; Modify the default slots of the Contact Model Assignment Table
; Here we choose the linear contact model (with kn=1e6) for all contact types
contact cmat default model linear property kn 1.0e6

; Generate 30 balls in a box
wall generate box -5.0 5.0 one-wall
model random 10001
ball generate radius 1.0 1.4 box -5.0 5.0 number 30

; Assign ball density
ball attribute density 100.0

; Activate gravity
model gravity 10.0

;Save the initial state
model save 'initial-state'

; Solve for a given time and save the model
model solve time 10.0
model save 'caseA-nodamping'

; Restore the initial state
model restore 'initial-state'

; Modify the default slots of the Contact Model Assignment Table
; Newly created contacts will use these settings
contact cmat default model linear ...
                     property kn 1.0e6 ks 1.0e6 fric 0.25 dp_nratio 0.1
; Apply the CMAT to existing contacts as well
; Note that the contact model will be overridden (and therefore all previous 
; information will be lost)
contact cmat apply

; Solve for a given time and save the model
model solve time 10.0
model save 'caseB-damping'

return
;==============================================================================
; eof: cmlinear_simple.p3dat
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cmlinear_simple.p2dat

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; fname: cmlinear_simple.p2dat
;
;  Exercise the Linear contact model
;==============================================================================
model new
model title 'Balls in a box'

; Set the domain extent
model domain extent -10.0 10.0

; Modify the default slots of the Contact Model Assignment Table
; Here we choose the linear contact model (with kn=1e6) for all contact types
contact cmat default model linear property kn 1.0e6

; Generate 30 balls in a box
wall generate box -5.0 5.0 one-wall
model random 10001
ball generate radius 1.0 1.5 box -4.0 4.0 number 30

; Assign ball density
ball attribute density 100.0

; Activate gravity
model gravity 10.0

;Save the initial state
model save 'initial-state'

; Solve for a given time and save the model
model solve time 10.0
model save 'caseA-nodamping'

; Restore the initial state
model restore 'initial-state'

; Modify the default slots of the Contact Model Assignement Table
; Newly created contacts will use these settings
contact cmat default model linear ...
                           property kn 1.0e6 ks 1.0e6 fric 0.25 dp_nratio 0.1
; Apply the CMAT to existing contacts as well
; Note that the contact model will be overridden (and therefore all previous 
; information will be lost)
contact cmat apply

; Solve for a given time and save the model
model solve time 10.0
model save 'caseB-damping'

return
;==============================================================================
; eof: cmlinear_simple.p2dat
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