Learning Forum

[sna]

Hi!

I have defined a material for two different temperatures (multilinear isotropic hardening) one curve at 20degC and the other for 121degC

How can I let Mechanical know which curve to use?

Is it the "Reference Temperature Value" that determines which material curve is used?

 

Thank you!

 

 

[Kaushal Vadnere]

Yes, setting reference temperature value to 121 degC / 20 degC will tell the solver which curve to use out of the two defined.

But, Reference Temperature is body specific, in case if you have an assembly/multiple structural bodies and want the same reference temperature across all bodies, you will have to manually set the Reference Temperature for every individual body. In that case to reduce your effort, you can keep the Reference Temperature as 'By Environment' (which is the default option) for all bodies (instead of 'By Body') and in details of Static Structural, you can set 'Environment Temperature' as the desired one. See screenshot below.




In case you have multiple structural bodies with different Reference Temperatures, it can be set to “By Body” and you can input desired strain-free temperature for every individual body as you have done here.

Thanks.

[Deepak]

Hi,

When material properties are defined as temperature-dependent, the solver utilizes nodal temperatures to ascertain the appropriate material characteristics. If material properties have been specified for different temperature ranges, the solver will reference the nodal temperatures derived from a thermal analysis or stipulated by a thermal condition to determine which set of properties to implement.

In this context, the "Reference Temperature" is utilized for the calculation of thermal strains and does not influence the selection of material properties by the solver. Therefore, to ensure that Mechanical accurately identifies the appropriate property curve, the nodal temperatures in the model must correspond to the temperatures for which the material properties have been defined.

CINT,TYPE,SIFS,Par2 command and auxillary field; I am confused!

Thanks,

Deepak