Dear sir, Hi every one , I have tried to solve hyper elastic problem , But i don’t know how to find Mooney revlin constants , and bulk modulus but i have uni axial tensile data for rubber material .

Hey @venkatesan ! Here you go with all the hyperelastic curve fitting constants: Neo-Hookean: C10: 2754572.269 [image] Mooney Rivlin: C01: -1543725.306, C10: 3478878.725 [image] Signorini: C01: -4325191.035, C10: 5952426.9831, C20: -97843.705 [image] I would prefer to use Signorini as t…

Hi @venkatesan , With the uniaxial data it’s possible to determine the Mooney-Rivlin constants - could you share your uniaxial data here? We actually have a script where we can quickly get these values for you :smile: Best, Anna

Hi, Sorry for late response,i have the file is in excel format , but i could not attach here because it asks jpeg format.

@venkatesan , you can attach a shared google spreadsheet or email me the excel file - aflessner@simscale.com Best, Anna

@venkatesan ! One more thing. I looked in to your case and it seems like there is a wrong face definition among solids. This could be due missing pre-definition of these faces prior to mesh upload. Please have a look in the figure below: [image] This is just to notify you since it may lead to ei…

Hi How to calculate mooney rivlin constants using excel curve fitting method. If you have any sheet please share with me. Thank you

Hi @duraisamy ! For a Mooney-Rivlin curve fit you could simply use a commercial software like MATLAB or find a pre-defined Excel Sheet for such applications online (or use the built in function from Excel itself to find a fitting curve). If you use MATLAB I can provide you with a script (think I hav…

Thank you Please provide a script

Hi @mpolo ! I currently cannot find the script and it is somewhere on my other laptop. I would suggest just looking for standard scripts you can find online or look for explanations on Stackoverflow :slight_smile: All the best! Jousef

Hello jousefm, Could you share with me the script, too? Thank you.

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Mooney Rivlin constants

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mpolo February 13, 2018, 11:25pm 10

Could you please share the script? Thanks!