Small Faces

[yassou]

Hello Everybody
I have a problem.
I want to simulate human rib bone in Abaqus Software, so i take this steps:
Catia Software=>Sketch tracer=>Draw Sections from CT image=>Extract Closed Curve=>Multi Sections Surface=>Closed Surface=>Multi Sections Solid (Picture 1,2)=>Save .stp File=>Import in Abaqus (Picture 3).
Problem:
When i want to mesh the part in Abaqus, there is small faces (Picture 3) and this small faces create the small and distorted elements.
Now How can i solve this problem? Should i change my import format? if yes To what? or change my draw approach in Catia Software? or ...
With Best Regards.
yassou.

Picture1, Catia Software, Multi Section Surface:

Picture1-1, Catia Software Multi Section Surface (Zoom and there is small Faces):

Picture1-2, Catia Software (Volume):

Picture2, Abaqus Software, Part Module:

Picture3, Abaqus Software, Small Faces:

Picture4, Abaqus Software, Mesh Module:

 

[weagan22]

Use 'Curve Smooth' on each of the sections before using the 'Multi Section Surface'. It will take some playing with but you should be able to get a nice looking part. It might also be good to create some guide curves to help guide the surface where you want.

 

[LWolf]

yes, I think you should try to clean your multi-sect surface a bit... all the verices lead to the multitude of small faces... try to align your sections with guide curves, i.e manual connection.

regards,
LWolf

 

[yassou]

Hi dear weagan22
Thanks for your respond.
Indeed you are right, I tried the Curve Smooth and extra/redundant vertices removed. but other problem raised.
Now Multi Section Surface did not work. maybe the Sketch get too simplified and i think there is not enough vertices in Sketch to get connected to the other Counterpart Sketch Vertices.
How can i Put vertices on the created smoothed curves ?
With Best Regards.
yassou.

 

[yassou]

Hi dear LWolf
Thanks for your respond.
Can you explain more about the try to align your sections with guide curves, i.e manual connection. ?
I know how to create guide curves, but i did not hear anything about manual connection.
With Best Regards.
yassou.

 

[weagan22]

Once you do the smoothing you will need to manually add points on each of the sections (i.e. add a point at the top and bottom of each section) and then pull a spline through the points. You can then use this spline as a guide curve for the multi-section surface (you may need more than 1 spline to get it to work).