Wednesday, April 16, 2014

EJS Dynamics: 1 Direction Collision Force Model

thanks to mr yip's feedback, a bug (solver defaulted to Euler instead of  Runge-kutta 4) was removed.

some of useful features include

for an expanded view or close up view of the F-t graph, move the carts by dragging on the carts near to the right side of the world view, as the plot detects the Tmax for simulation to run.

collision cart, showing ideal e=0 and smaller view space xmin=0 and xmax=1
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

ideal e=1

collision cart, showing ideal e=1
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

ideal e=0

collision cart, showing ideal e=0
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

real e=1

collision cart, showing real e=1, select slow?==true and data analysis of $ \int F dt = \Delta Momentum $
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

collision cart, showing real e=1, select slow?==true and data analysis of $ \int F dt = \Delta Momentum $
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip

real e=0

collision cart, showing real e=0, select slow?==true graphs showing some tension reaction after initial first compression
http://weelookang.blogspot.sg/2014/04/ejs-dynamics-1-direction-collision.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel09.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip


mr yip old version of my model does not really simulate the Force-time graph at collision as i used a cheating method to trick the dt to be sizeable for a detectable F-t graph but the problem is when the collision is ideal, the dt is actually zero as the computational method brings the 2 masses together at precisely the exact time, making dt =0 for calculation of Force infinity.
Add caption


older version:

Dynamics: 1 Direction Collision Force Model
collision cart
http://weelookang.blogspot.sg/2013/03/collision-carts-real-and-ideal-combined.html
https://dl.dropboxusercontent.com/u/44365627/lookangEJSS/export/ejs_model_Momentum1DForceModel04.jar
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_model_Momentum1DForceModel04.jar
older: https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_Momentum1DForceModel04.jar
author: lookang, paco and engrg1
worksheets by
(lead) AJC: https://www.dropbox.com/s/5obo5awn3w3zrgr/CollsionCartsAJC.zip
(lead) RVHS: https://www.dropbox.com/s/8bq51hqa1jsjcvn/CollsionCartsRVHS.zip
IJC https://www.dropbox.com/s/ztwc4pkvtc7ho50/CollisoncartsIJC.zip
SRJC: https://www.dropbox.com/s/m4yrerc97fgesn2/CollisioncartsSRJC.zip
YJC: https://www.dropbox.com/s/uguy3ewndj0pqxr/CollisionCartsYJC2013.zip