# Mesh Morphing Field Function

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 August 9, 2011, 10:55 Mesh Morphing Field Function #1 New Member   Florian Join Date: Apr 2011 Posts: 5 Rep Power: 7 Hi @ all, I am trying to simulate a bullet through an barell with Mesh Morphing and Translation. What I need is a Field Function who says the the bullet is moving every 0.00001seconds, 0.01meters, any Ideas???? thanks for your help.

 August 9, 2011, 13:28 #2 Senior Member   Join Date: Oct 2009 Location: Germany Posts: 637 Rep Power: 14 Why don't use the displacement option for the morpher? Otherwise calculate the velocity and use velocity as morphing option. Should be the easiest way, especially when the velocity (and therefore the displacement) is constant. When it shouldn't be constant (for example due to the acceleration of the bullet due to the pressure), my first thought would be to use 6DOF morphing or try to find an equation for the velocity. Something like v = a*t

 August 11, 2011, 08:04 #3 New Member   Florian Join Date: Apr 2011 Posts: 5 Rep Power: 7 Thanks for the advice....but how does it works when i reaches the max. streching of the cells to remesh it. Means not stop the simulation and remesh it, kinda automatition? Thanks

 August 11, 2011, 10:07 #4 Senior Member   Ping Join Date: Mar 2009 Posts: 234 Rep Power: 10 this sort of work is done with a simple java macro - have an outside loop which loops forever, then within the loop use some test to trigger a remesh - eg when mesh is 50% larger than last remesh, or a cell quality report. You then get the value of displacement from a report (or your F=ma calc in the macro), transform/scale etc the 3D CAD or Part solid or surface, then remesh and continue the loop - the region surfaces will be updated before remeshing begins. Like all macros, you record the steps first then insert the loop and get.value reports etc.

 August 11, 2011, 12:14 #5 New Member   Florian Join Date: Apr 2011 Posts: 5 Rep Power: 7 ok, thank you very much, I never did something with Macro. So, I will try to work it out, hopefully.

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