presentation and first question!!! ! ! ! ! Hey!

[amedeo]

Good morning to all....I call myself amedeo and I am a graduate of mechanical engineering. . .
to carry out my thesis work I have to use ansys workbench, especially I have to succeed in meshare a solid body formed by rods, all in 3d...
the problem arises from the fact that I have no experience in mesh field and what else.. .
I would like to know from you which are the main steps to perform a mesh with quadrilaterals quite simple. . .
Thank you all for the answers I will be given....
hi amedeo

 

[Onda]

but do you have to meshare a shell (quadrilateri) or a brick?
do you need to extract the surfaces? or do you work directly on the solid?
If they are rods could you use beam elements?
Maybe you need to clarify how the cad model is made to help you.

 

[amedeo]

Then... I have to put it in brick.... work directly on the solid. ..practically is a design imported directly from solidworks.. I attach a file at least you understand better....consider that the final body is a linear repetition in the 3 directions of the single cell that I attached to you. . . .
hello and thanks

 

[Onda]

but did the professor explicitly ask you to use brick elements? 6 sides parallelepiped?
is it not easier to use tetraedi with the mid side node? are the most common elements in solid mesh?

 

[amedeo]

the professor told me to try with bricks... now he's running mesh with the dominant hex command. Too much for me are completely new things... I have everything to learn.. . .

 

[Onda]

it is not easy meshare to exa, and perhaps, (although I do not use more workbench for a long time) is not the most suitable program.
you can use the exadominant and try to refine the mesh to get something decent out. Why this need to use exa?
normally solid models meshano with tetra with midside knots.
exa are used when you have simple solids, in which you can make a mapping.
for example a tube, which you can meshare the two starting and end surfaces (compliantly, workbench has a special command) and then sweep over the entire length.
if the solid is more complex a solid mesh exa normally you do by hand, and not with workbench. But I repeat to you, I do not use it anymore for years and things can be changed and much.

 

[amedeo]

ok....thank you so much for now...it is not that I need to use the exa...only since I have never tried to meshare a solid the professor told me to try also the solution of the exa....just finished meshare try again with the tetra with midside node....but where do I have to go to find this function? ? ? ?

 

[Onda]

is the default mesh of ansys workbench. the mid side node is always used unless specific to not use it. to understand us are the elements with square formulation. those that approximate their edge for three points and then with a curve.
On the contrary, the linear elements, without mid side knots, have a straight edge.