How to use materials for a hyperstudy run?

Rushabh Parikh
Rushabh Parikh Altair Community Member
edited January 2023 in Community Q&A

How can I link the variables such that I can use the materials for a hyperstudy run. i.e. currently I am able to use E, Nu, Rho as three independant variables but I would want to use Mat1 (Rho, E, Nu); Mat2 (Rho, E, Nu) and similarly. Thus if I were to study the effects of 3 materials with a thickness variable with 2 levels instead of 54 runs, 6 runs should be sufficient. 

Answers

  • Gildas GUILLY_21156
    Gildas GUILLY_21156
    Altair Employee
    edited January 2023

    Hello Rushabh Parikh,

    Did you consider using a model of type "Lookup Table" ?
    This can be used in such case. All you need is to have a table (csv) filed with all your material data.
    This will allow you to have 1 master varable (the material name) and link all the response of this model (E, nu, ...) to your secondary variables (that you use in your FEM model).

    Material,Young,Poisson,Density,Cost
    Aluminum_Type1,65000.,0.3,2.75e-9,1.6
    Aluminum_Type2,67500.,0.28,2.71e-9,1.7
    Aluminum_Type3,68900.,0.31,2.89e-9,2.1
    ...

    You can find tutorials/examples in the Hyperstudy help.


    Gildas GUILLY

  • Rushabh Parikh
    Rushabh Parikh Altair Community Member
    edited January 2023

    Hello Rushabh Parikh,

    Did you consider using a model of type "Lookup Table" ?
    This can be used in such case. All you need is to have a table (csv) filed with all your material data.
    This will allow you to have 1 master varable (the material name) and link all the response of this model (E, nu, ...) to your secondary variables (that you use in your FEM model).

    Material,Young,Poisson,Density,Cost
    Aluminum_Type1,65000.,0.3,2.75e-9,1.6
    Aluminum_Type2,67500.,0.28,2.71e-9,1.7
    Aluminum_Type3,68900.,0.31,2.89e-9,2.1
    ...

    You can find tutorials/examples in the Hyperstudy help.


    Gildas GUILLY

    Hey Gildas,

    Thank you for the quick response. I am however, unable to link the variables (namely E, Nu, Rho, Cost) to the master variable. Could you please share some documentation/tutorial to explain your pioint?

     

    Thanks in Advance,

    Regards,

    Rushabh Parikh

  • Gildas GUILLY_21156
    Gildas GUILLY_21156
    Altair Employee
    edited January 2023

    Hey Gildas,

    Thank you for the quick response. I am however, unable to link the variables (namely E, Nu, Rho, Cost) to the master variable. Could you please share some documentation/tutorial to explain your pioint?

     

    Thanks in Advance,

    Regards,

    Rushabh Parikh

    Here is how you need to create your setup :

    Step 1 - Create a Lookup model, pointing to your csv. Click on Import variables to select the number of variables (1 in your case, let's call it Var_Name). This will create a single variable and 4 responses (let's call them Resp_E, Resp_Nu, resp_Rho, Resp_Cost).

    Step 2 - Create your FEM model, exactly as you did so far. that means you will create 4 new variables from your FEM file (Let's call them Var_E, Var_Nu, Var_Rho and Var_Cost).

    Step 3 - Go the to the "Define Input Variables" phase, and go to the "Link" tab.
    There you can define direct relationship between your 4 variables from the FEM model to the responses from the Lookup model.
    Var_E = Resp_E
    Var_Nu = Resp_Nu
    etc.

    Then you can resume your setup as usual (defining the responses from your FEM result).
    Doing so, you will have 1 main variable (that will be changed by your DOE for example) and 4 dependant variables (that will update in accordance with the main variable).

    Gildas