Dear All,
I am simulating a plate with prescribed initial displacement in COMSOL, I get the stress and displacement result corresponding to prescribed displacement? Note that Materials are Hyperelastic material which obey Neo-Hooke law. I want to use the obtained displacement and stress result as boundary condition for 2nd simulation in which i am going to put stiff mass on my plate and check its behavior corresponding to different eigenfrequencies.
Your comments are highly appreciated.
Thank you
Dear friend,
To consider the stress and displacement obtained from the first simulation in the second one, you should use the study: Prestressed Analysis, Eigenfrequency/ Prestressed Analysis, Frequency Domain. Please check the attached file.
As described by Comsol, the Prestressed Analysis, Eigenfrequency study is used to compute eigenfrequencies and eigenmodes that are influenced by a prior static load. The study consists of two study steps: a Stationary study step followed by an Eigenfrequency study step. The study computes the eigenfrequencies and the shapes of the eigenmodes when influenced by a prior static load on the structure.
Hope this will help
Dear Thanh-Canh Huynh,
Thank you for your response. Issue here is Flouqet Bloch Periodicity condition. The four vertical boundaries of my plate on which I am applying prescribed displacement as initial load, on same four vertical boundaries I need to apply Periodicity. When I did so, It does not work as, both conditions are on same boundary.
Reason for apply F-Bloch Periodicity is, I want to draw a dispersion curve.
Can you give an idea how can I do it, under the prepossessed condition, I need to apply F-Bloch BC.
Thank you
Dear Muhammad
As a matter of a fact for general cases, you can use the results of a study, say Study 1, as an input for Study 2. Lets assume you have 2 physics: Physics 1 and Physics 2. The method is as follow:
-In Study 1, untick calculations for Physics 2 and leave the rest.
-In Study 2 whose input data should be read from Study 1, you should untick Study 1, then in "Values for dependent variables" , look for "Values of variables not solved for".
-Set the settings to "User controll".
-Set "Method" to "Solution".
-Set "Study" to previous study whose data you want to use as input in the current study.
I hope that works.
Best regards
I want to ask a related question.In comsol I want to use my voltage or pressure solution (output of first study) as the input voltage or pressurof my second study.Is it possible to do that in comsol?
Thanks
You need to add two studies in which one solved before the other and after first one just to be sure check use previous step condition on second step but more importantly you need to specify a good multiphysic between steps if they do different study.
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