modal analysis

[ygna]

Can you explain to me how I can make the mesh a conruent knot?
ps io to taint the materials I used the mesh attributes command by selecting the volumes I did well? is it not that I had to also select areas lines and knots?
thanks and good day

 

[Onda]

Try to start with simpler problems and then complicate things slowly.
1- Static analysis only masonry
2- modal analysis only masonry
3- static masonry analysis and only one homogeneous isotropa shaped beam
4- modal analysis 1 homogeneous isotropa beam
5- Static analysis with all isotrope homogeneous beams
6- modal analysis with all isotrope homogeneous beams
7- Static analysis giving orthotopre properties to beams
8 modal analysis with horticultural properties.

for meshare to congruent knots it is necessary that the two volumes share a same face.

 

[volaff]

I have two plates perpendicular to the other and in the common "region" I should create a mesh to congruent nodes (I know that there is also an ad hoc command but I do not know what it is and I do not know how to use it therefore).

how can I create such mesh (areas) to congruent knots?
Should I create equal areas?
and if the plates are different?

Thank you all for your help!
See you soon!

 

[ygna]

I wanted to tell you that after the umpteenth re-insertion of couple dof the modal analysis went to good end I was wrong not to select the two areas in contact..ps how do I see the participant mass for every way? I can now proceed with non-linear analysis...:smile:

 

[volaff]

Hey, how about the couple dof? I think it's equivalent to mesh to congruent knots?
What is it?

 

[ygna]

I practically have a masonry church with wooden cover...the couple dofs are constraints that I inserted between the masonry and the cover have nothing to do with mesh to congruent knots. . .

 

[volaff]

and the purpose of the couple dof what would eventually be?

 

[ygna]

If I don't insert them the cover would be suspended in the void

 

[volaff]

?? ? I thought it was necessary to make sure that the common areas between church and cover presented the same deformations, which is the same as creating a mesh of congruent nodes.
I did not understand a bat then!: )

 

[ygna]

you're right too....I see them as internal vinclis in a structure!!!In the end they generate the same behavior only that the mesh a nodi c should be easier to do

 

[volaff]

I have a problem similar to yours and should make two mesh to coin knots.
practically if the mesh were not the two parts matching knots (in your case church and cover would deform independently from each other and differently).
to realize such mesh I think needs to copy the mesh of one area on the other and make the knots coincident but perhaps with command "couple dof" seems to be easier the thing.

 

[ygna]

before reaching a solution I repeated the operation 6 times...ps you know how to see the participant mass of the various ways?

 

[volaff]

I'm sorry.
search with the appropriate button maybe find something or register at the forum marked in the useful links of ansys, there are very competent people (it is in English of course)!