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[Solved] how each constant of BB model influences?

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Posts: 13
Topic starter
(@emaicill)
Active Member
Joined: 11 years ago

hey guys, does anybody know how each constant of BB model (Stress scaling factor, Creep parameter, Effective stress exponent, Creep strain exponent) influences the stress-strain response?

im only sure about the Creep strain exponent,C: as the absolute value of C increase in the range of [-1, 0], theres decreased amount of hysteresis but steeper slope at the beginning.

also, according to my simulation results, i think increasing effective stress exponent, m, leads to larger hyesteresis and larger stiffness, for creep parameter, A, is just the opposite.

Is it right? and how about the other two?

Thank you guys!

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Posts: 3998
(@jorgen)
Member
Joined: 5 years ago

Hello,

Good question. The easiest way to answer that question is to examine the BB-model using the Parametric Study option in [URL= http://polymerfem.com/content.php?9-Material-Model-Calibration-MCalibration ]MCalibration[/URL].

-Jorgen

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Posts: 13
Topic starter
(@emaicill)
Active Member
Joined: 11 years ago

Thank you Dr. Jorgen. That works !! :))

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