create differen mesh or element size on tthe same face

Rahul_P1

Hello there,

i have meshed a model, that a solver reject, an area can´t be read and I´a sure that, it´s the way I have meshed that area is certainly wrong.

The surface area can be limited or separated in 2D after automesh by : >> Mesh >> Project >> node-to-line >> then select the nodes then the line etc. but how exactly?? ; I think that, that is the point where i made the mistake. 

do somebody can briefly explain me the right steps i can use to solve this?

Thanks in advance
Nkoelouna

Rahul_P1

Nkoelouna,

Exactly what is the error that the solver gives that helps you diagnose the problem to be with the mesh ?

Also what do you think is wrong with the mesh in the cross section of your model? is it the quality or the connectivity ?

I see that you surface mesh the cross section and spin it to create solid elements, can you check the quality of your solid elements in 3d > check elems and connectivity using tool > faces ?

Rahul_P1

You can create a different mesh size in the same surface by changing the biasing in the interactive panel of automesh.

1. Go to the biasing subpanel.
2. Notice the bias intensity number (default 0.000) on each surface edge.
3. Change the bias style (if linear is not suitable)
Linear style corresponds to the positive slope of a straight line over the interval [0,1] of the real line. For a positive bias intensity, smaller elements are at the start of the edge.
4. Verify that the selector adjust: edge is active.
5. Left- or right-click the edge biasing intensity number as indicated in the following image to increase or decrease its value by 0.1.

You could also easily trim the surface into smaller surfaces and then mesh them to individual sizes

Rahul_P1

Nkoelouna,

You need to use tool > rotate > select your geometry (surfaces or solids) > select axis of rotation > base point of rotation > input angle of rotation

From your image I see that you need to rotate around x axis with an angle of say 30 degrees 

Rahul_P1

well, thanks ...  but it´s not possible to adjust the face parallel, or perpendicular to the axis ?

 

Rahul_P1

You can easily measure the angle the geometry makes with the axes using the true view panel, press T on the keyboard

1. Click get angles.
2. The current view angles are placed in the menu items thetax =, thetay =, and thetaz =.

Then use tool > rotate and enter the angle you get from the previous step.