[Workbench] Explicit Dynamics

prince_mech · October 9, 2017, 05:16

I am trying to do a simulation on a punching operation. The solution is taking too much time (4 hours and still half way). My question is, is it obvious for a explicit solver or my settings might be wrong. I am trying on a simple geometry.

TIA

siw · October 10, 2017, 06:50

This should be posted in the structural analysis section and the question is not well posed.

Explicit dynamics simulations will have (very) small timestep and can require (very) many timesteps. I've had simulations which take days to run. Find where the time step governing mesh element(s) are and fix them (e.g. remesh, mass scaling). ED really should be conducted on simplified geometries to give insight into the problem rather than trying to gain detailed data. Also I find that using 16 CPUs is the most efficient, if I think a model needs more CPU cores I make the model simpler.

prince_mech · October 10, 2017, 07:21

Thank you for your suggestion.
And nest time i will post in the correct section.

October 9, 2017, 05:16	Explicit Dynamics	#1
prince_mech Member Prince Hossain Join Date: Feb 2017 Posts: 32 Rep Power: 9	I am trying to do a simulation on a punching operation. The solution is taking too much time (4 hours and still half way). My question is, is it obvious for a explicit solver or my settings might be wrong. I am trying on a simple geometry. TIA

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to set the correct material datas for composite simulation in Explicit Dynamics i	asuasura	ANSYS	1	June 12, 2018 23:20
Hyperelastic Material model in Explicit Dynamics	sghod17	Structural Mechanics	0	July 17, 2015 16:07
[ANSYS Meshing] Explicit Dynamics "Model" problem with mesh	ATD	ANSYS Meshing & Geometry	0	January 24, 2013 08:43
Couple between Explicit Dynamics and CFX	Delcraft	ANSYS	0	August 13, 2012 11:14
Ansys 13.0 Explicit Dynamics Tutorial	WenZyn Lim	ANSYS	0	April 15, 2011 09:57

October 10, 2017, 06:50		#2
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 739 Rep Power: 26	This should be posted in the structural analysis section and the question is not well posed. Explicit dynamics simulations will have (very) small timestep and can require (very) many timesteps. I've had simulations which take days to run. Find where the time step governing mesh element(s) are and fix them (e.g. remesh, mass scaling). ED really should be conducted on simplified geometries to give insight into the problem rather than trying to gain detailed data. Also I find that using 16 CPUs is the most efficient, if I think a model needs more CPU cores I make the model simpler.

October 10, 2017, 07:21		#3
prince_mech Member Prince Hossain Join Date: Feb 2017 Posts: 32 Rep Power: 9	Thank you for your suggestion. And nest time i will post in the correct section.