How to use "mass scaling" in this Example ?

[arashmohammadzadeh]

Hi,to All,
Pleaze help me for using the "mass scaling" in this example ???????

 

[jisb007]

I didn't open your CAE file ... but you should be able to define mass scaling in your input file directly??

For example, the following:

*FIXED MASS SCALING, TYPE=BELOW MIN, DT=1.0E-7

OR:

*VARIABLE MASS SCALING, TYPE=BELOW MIN, DT=2.0E-7, FREQUENCY=10

 

[arashmohammadzadeh]

Analysis Input File Processor exited with an error.




*fixed mass scaling and *variable mass scaling are not supported for eulerian elements.

 

[arashmohammadzadeh]

plz download this file ..........

 

[bassmanjax]

I can't look at your CAE file, but the clue is in the error message

You can only use mass scaling for lagrangian domains, not Eulerian. You ould try increasing the density of your Eulerian material though, which would have the same effect.

Martin Stokes CEng MIMechE

 

[arashmohammadzadeh]

the file is uploded is turbine2.RAR
plz download it.....

 

[Nileo2005]

Wow. Why such the push to download your file? Kinda weird if you ask me.
Bassmanjax got it though, and its that you cannot apply mass scaling to the Eulerian domain. Mass scaling will multiply the mass in an element, that changes very little mind you, to reach a certain value. In the Eulerian domain, the material doesn't move with a set of nodes, but through them, so the mass of an "element" of Eulerian material can be in incessant flux, so changing the mass of these elements would constantly be adding and subtracting material from the model.

 

[arashmohammadzadeh]

tanx my friend