how to calculate the element temperature

[biblo]

Hi everybody!
I have a question please:
Suppose that TTOP and TBOT for the four nodes of a Shell131 element are:
Nodes: I J K L
TTOP: 251 20 98 150
TBOT: 57 69 87 47
And you have for example: MPTEMP,1,20,200,400,600,
MPDATA,DENS,1,1,12e-6, 13e-6, 14e-6, 15e-6
Witch temperature Ansys uses to do the change of DENS, temperature of the element or the temperatures of its nodes?
If it uses the temperature of the element, so how did it calculate it??
In other words, the temperature of the element is the average temperature of its nodes?
and how can i list it?
thank you in advance!
Barha

 

[corus]

The temperature will be that calculated at the gauss point(s)

corus

 

[biblo]

ok and how can one obtain information about temperatures, at the gauss points?
and is there any way to change the values of the material properties at those points?
Barha

 

[corus]

The material properties are changed at the gauss points by your temperature dependent material property table.

I'm not sure why you'd need to know the temperatures at the gauss points anyway as the nodal values are of more use. printing out element values instead of nodal values will give these values if you want. Alternatively plotting temperatures as a 'quilt' type contour will also do.

corus

 

[biblo]

Look Corus:
Ansys does not change the values of the mechanical properties of the element according to its average temperature but looks at the temperature at its points of integrations and allots the corresponding values of the property to them which it finds in the table of the properties.
So, I need to read the temperature in each point of integration to change the TABLE of mechanical properties to him according to the value reached of this temperature.
Thus, for the same element which contains for example 4 points of integrations I would have various tables for each one of them. How to read the temperatures in these points and how to allot the new tables to them?
Barha