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initial particle distribution in SPH

I wonder how important the initial set up for a Smoothed Particle Hydrodynamics simulation is. Is the initial particle distribution somehow significant for the final result? How to control particle density and distribution along problem domain? What are the important factors inherent to the initial set up? Having control over the initial set up is going against the philosophy of this method?

 

zaphai's picture

Soil Structure Interaction

I am trying to model the soil churning action of a rotary tiller trough soil structure interaction. Based on some published articles, DEM and SPH approach both have been used to model the tool interaction with the soil. I am little confused in the selection of the appraoch. Can somebody throw some light on advantages and disadvantages of one approach over another and which approach should be chosen for more realistic results.

error in lsprepost file

Hi there,

 

I'm using LS-DYNA as a tool in my study. Currently, i'm facing this problem:

 

Run-time check failure#3 - the variable 'count_ntime' is being used without being initialized

 

Please...help me...I've done so many new models, yet the same error keep occurring...

 

Thanks... 

 

p/s: i can be reached by this e-mail: man@ppinang.uitm.edu.my 

suitable contact for sph in LS-DYNA

Hi there,

I'm using SPH in LS-DYNA as my tool to simulate the projectile penetrate the box. Both projectile and box are modeled as sph. 

I'm having problem to determine the suitable contact of these two entity.

Could someone please help me... any tips that will help me to tackle this problem is highly appreciated!

 

Thanks... 

SMOOTHED PARTICLE HYDRODYNAMICS (SPH)

Free Tags: 

DEAR FRIENDS

 CAN WE MODEL A METAL BLANK UNDER EXPLOSION USING "SPH"?  (YET I HAVE NOT SUCCEEDED TO MODEL THIS IN LS-DYNA CODE)

SPH-EXPLOSIVE

DEAR FRIENDS

IS IT POSSIBLE TO MODEL A METAL BLANK UNDER EXPLOSION USING SPH? (IN ORDER TO SIMULATE EXPLOSIVE FORMING OF A HEMISPHERE)

 

THANKS

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