Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Material properties

Please login with a confirmed email address before reporting spam

Hello !

I have a question.

if I put pressure on the model, do material properties change ? as the elasticity. why does frequency change

Can someone help me ?

1 Reply Last Post 2012/04/24 14:48 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 2012/04/24 14:48 GMT-4
Hi

that depends what you are modelling, you might be in "solid" then you can get stress stiffening, in certain cases, but for that you need to combine a stationary stres analysis and use that as the starting point for an eigenfrequency analysis

But yu can also have a pressure dependent material that depends on the material you are using and the physics you have selected

--
Good luck
Ivar
Hi that depends what you are modelling, you might be in "solid" then you can get stress stiffening, in certain cases, but for that you need to combine a stationary stres analysis and use that as the starting point for an eigenfrequency analysis But yu can also have a pressure dependent material that depends on the material you are using and the physics you have selected -- Good luck Ivar

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.