Learning Forum

[WooMin Jang]

Hello i'm a master student developing user material. 

i'm wondering that how can i define user- derfined viscosity in mat_sph_viscous subroutine in package.. 

1) Is it possible to link my umat41v with subroutine f3dm9sph_userdefin? 

    I want to define the material that is solid when elastic and fluid when after yielding 

2) In subroutine f3dm9sph_userdefin, is the xmu is the variable to define?? 

     i can't understand that there's no example in the package... 

 

 

 

 

I really appreciate your help...

please help me

 

 

[Ushnish Basu]

Dear WooMin,

You can use DEFINE_ADAPTIVE_SOLID_TO_SPH to transform a solid element to an SPH particle, though the material properties will be taken from the original solid element.

If you want your material to behave more like a fluid after yielding, you can just define it appropriately in the material routine itself, no need to call a separate routine. 

f3dm9sph_userdefin is called from within MAT_SPH_VISCOUS, and it;s not meaningful to call it from elsewhere.