Creep test data fit

If I have the creep test data (Strain vs Time) at different temperatures and different stress levels, how can I find the Maxwell creep parameters for Marc using? or can i use the test data as the creep material model directly?

Please let me know! Thanks in advance!

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0 Kiranraj Shetty over 5 years ago

Dear Rex He,

You can use either creep strain vs time or, creep strain rate vs time data to define the creep material properties. These curves at different temperatures can also be included using 2D tables. You can use refer the tables for Maxwell model with method set to piecewise liner.

The procedure is explained in following article,

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8019793&actp=search&viewlocale=en_US&searchid=1539065484172

As of now, the experimental data fit in Mentat does not support obtaining creep material constants, using the test data.

Regards,

Kiran

Kiranraj Shetty

MSC Tech Support
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0 Kiranraj Shetty over 5 years ago

Dear Rex He,

You can use either creep strain vs time or, creep strain rate vs time data to define the creep material properties. These curves at different temperatures can also be included using 2D tables. You can use refer the tables for Maxwell model with method set to piecewise liner.

The procedure is explained in following article,

https://simcompanion.mscsoftware.com/infocenter/index?page=content&id=KB8019793&actp=search&viewlocale=en_US&searchid=1539065484172

As of now, the experimental data fit in Mentat does not support obtaining creep material constants, using the test data.

Regards,

Kiran

Kiranraj Shetty

MSC Tech Support
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Vote Up 0 Vote Down

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