Stress-dependent and Temperature-dependent Material Definition

Altair Forum User

I nedd to help in two issues:

 

Type Material : MAT1

CASE: NON INEAR QUASI ESTATIC

MATS1 - PLASTIC DEFORMATION

MATT1 - VARIATION OF PROPERTIES

 

1. Stress-dependent and Temperature-dependent Material Definition  MATS1

I'm doing an analysis that I add the stress - strain curve for plastic deformation of a material under different conditions of temperatura. For this, I created TABLES1 to each curve with different temperature values and  I introduced in a TABLEST. In this case my question is:

The results of plastic deformation ¿Are an accumulation of calculating for each TABLES1 ? and ¿How can I to do observe the results for each curve in the same analysis?

 

2. Isotropic Material Temperature Dependence MATT1

I need to add changes in the material properties dependent,the temperature values, I created TABLEM1 for Young Modulus and other for de Poissons coefficient fot two diferent temperature values and integreted them in subcase material MATT1.  But the next warnning appears:

' Temperature-dependent materials are present, yet no respective  temperature field has been identified.
  Temperature-dependent material properties will be ignored.  Use TEMPERATURE(MATERIAL) in subcase section to specify material temperature set ID. '

 

Can you help me please..

 

Thanks in advance

 

Fer CM

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Altair Forum User

Hi Fer CM,

 

1) I will check and let you know if there is about your requirement

 

2) Goto Analysis>> Global case control>>  and add TEMP>>Temperature(Material)

 

Please refer to help for more information about TEMPERATURE(MATERIAL).

Altair Forum User

Fer CM,

 

It is no possible to see intermediate results for now.

 

regarding the results, for Temperature T1 the solver follows the TID1 curve and for T2 solver follows TID2 curve for analysis.

Altair Forum User

Hi Prakash:

Thanks for you advices,  , I know that the Temperature T1 the solver follows the TID1 curve and for T2 solver follows TID2 curve for analysis, but my specify question is:

 

The initial conditions of TID2 curve ¿Are there the final conditions of curve TID1?  the information found for Strain and stress of curve TDI1  add to curve TID2 and the final result is a representation of the combinations of this like a sumary to load steps 

 

TDI1 Results +  TDI2 Results = Final Results (Strain, stress, displ. ...)

 

And in my other cuestión I did a TEMP load case and the same message appears ,

 

If I create a TEMP load subcase in a Global control case, Only allows me intoduce one temperatura value ,  I need know the behavior for my model for diferent temperatures. The value properties are E1,nu1,rho1,A1 for T1 and E2,nu2,rho2,A2 for T2 , like a TID1 and TID2 curves. I dont need to know the values per separate cases I need to know the effects of all consecutive steps or states.

 

Thanks in advance

 

Fer CM