mooney Revlin model

shaswat · October 11, 2012, 05:14

Strain energy function for Mooney Revlin model ( from Literature)

W= c1*(I1-3)+C2(I2-3)+D1[exp(D2(I1-3))-1]

C1, C2 , D1 and D2 are material constant. Unit for all the terms are Pa

But in CFX , I could not find c1, c2, D1, D2 instead I found c10, c01, c11 and it is treated as material constant with unit Pa
but i found only one D the unit for D is Pa^-1

any one help me or explain about this

Thanks

Govind

Lance · October 11, 2012, 05:41

You're asking a solid mechanics question in a cfx forum?
Anyway, I trust you have read the help files that explains that the 2-parameter Mooney-Rivlin strain energy potential is defined as
W = c10(I1-3)+c01(I2-3)+(1/d)(J-1)^2
where the last term is different compared to your expression. d is an incompressibility parameter.

ghorrocks · October 11, 2012, 05:52

I guess this follows on from Govind's last post - http://www.cfd-online.com/Forums/cfx...lasticity.html

shaswat · October 21, 2012, 08:34

Dear friends
I am trying to model mooney revilin model for artery wall .I plan to use 3 parameter model.material constants C01, C10, C11 and incompressibility parameter D1 have been taken from literature. My question is: should I provide any other properties like young's modulus poisson' ratio, density etc to the artery wall model other than Mooney Revilin material constants? or Is it sufficient to describe only mooney revilin constants?

Thank you for your kind reply

Regards

Govind

October 11, 2012, 05:14	mooney Revlin model	#1
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	Strain energy function for Mooney Revlin model ( from Literature) W= c1*(I1-3)+C2(I2-3)+D1[exp(D2(I1-3))-1] C1, C2 , D1 and D2 are material constant. Unit for all the terms are Pa But in CFX , I could not find c1, c2, D1, D2 instead I found c10, c01, c11 and it is treated as material constant with unit Pa but i found only one D the unit for D is Pa^-1 any one help me or explain about this Thanks Govind

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October 11, 2012, 05:41		#2
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	You're asking a solid mechanics question in a cfx forum? Anyway, I trust you have read the help files that explains that the 2-parameter Mooney-Rivlin strain energy potential is defined as W = c10(I1-3)+c01(I2-3)+(1/d)(J-1)^2 where the last term is different compared to your expression. d is an incompressibility parameter.

October 11, 2012, 05:52		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	I guess this follows on from Govind's last post - http://www.cfd-online.com/Forums/cfx...lasticity.html

October 21, 2012, 08:34		#4
shaswat Senior Member Shashwat Join Date: Nov 2011 Posts: 107 Rep Power: 14	Dear friends I am trying to model mooney revilin model for artery wall .I plan to use 3 parameter model.material constants C01, C10, C11 and incompressibility parameter D1 have been taken from literature. My question is: should I provide any other properties like young's modulus poisson' ratio, density etc to the artery wall model other than Mooney Revilin material constants? or Is it sufficient to describe only mooney revilin constants? Thank you for your kind reply Regards Govind