Yield Criterion & Cyclic Hardening in Forming

Junta_20361
Junta_20361 New Altair Community Member
edited October 2020 in Community Q&A

Dear Expert,

I'm using InspireForm and HyperForm simulate my 'sheet metal forming process'.

I have some questions related to the material parameters in Radioss solver.

Currently, i'm using a material for stamping but i don't have its full specifications.

I have the stress-strain curve already. (taken from the tensile test).

However, in InspireForm, it requires us to define the yield criterion and cyclic hardening.
image.png.4ddf3103b3eb3a0114d03ba833d5cbcf.png

So my questions are:

1. Is it necessary to input the yield criterion and cyclic hardening?

2. How can i calculate those specs?
3. If i don't have those specs, what should i choose?

(i only have the tensile test data for 'force vs displacement'.

Thank in advance!

 

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Answers

  • Dhanasharee Jadhav_21915
    Dhanasharee Jadhav_21915 New Altair Community Member
    edited September 2020

    Hello,

    1.Yes, it is necessary. It will improve the springback prediction

    2.Those values you will get it from material supplier

    3.You can keep the default values by using similar material from database which has nearby values as per your requirement.

     

    Regards,

    Dhanasharee Jadhav 

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