XANSYS Message: 69 [Go back to message list]
[bookmark on del.icio.us]
No rating yet
Rate item:

Subject: Re: How to mesh --- Please help!
Author: Steve Owen
Date: 1998-12-17 10:09:00

It is very unlikely that you will get a satisfactory result with tets on
this model. If you are using 5.5, try the new sweeping tool and mesh
with 45s or 95s. You should first map mesh either the inner or outer
surface of the cylinder using a shell element (63, 93) and use that as
your source. The target will be the opposite surface. To specify
number of elements through the thickness do an lesize on one of the
lines connecting the two surfaces. The default limit for aspect ratio
is 1:20 before we Ansys will give you a warning. If you are comfortable
with increasing that, you can manually change the aspect ratio limit
using the SHPP command.

Steve Owen
Senior Development Engineer
ANSYS Inc., Pittsburgh, PA
http://www.andrew.cmu.edu/user/sowen/

> -----Original Message-----
> From: Tham [SMTP:cstham@f...]
> Sent: Thursday, December 17, 1998 2:29 AM
> To: xansys@o...
> Subject: [xansys] How to mesh --- Please help!

> From: Tham

> Hi,

> Im trying to mesh a hollow cylinder , with the outer radius is 203 mm
> and
> thickness 7.1 mm, the length of the column is 4010 mm. I managed to
> model
> the column using Ansys build-in modelling tools (hollow cylinder), but
> when
> I tried to mesh it (after selecting the solid92 element and entering
> the
> material properties), it hangs most of the time. Then, I try to set
> the
> mesh to coarser (Im using smart meshing tool), and finally Ansys
> managed to
> mesh the cylinder but with huge number of elements and nodes! (more
> than
> 100,000).

> So, the question is what should i do to reduce the elemnet size? I
> tried to
> set the element size coarser by using the global size but still can't
> mesh
> it properly.

> Thanks in advance.

> Rgds,
> Clement Tham

Posts possibly associated with message #69AuthorDateScore
63How to mesh --- Please help!Clement Tham1998/12/17 
64Re: How to mesh --- Please help!Marc Seidel1998/12/17 
66Re: How to mesh --- Please help!David Gross1998/12/17 
67Re: How to mesh --- Please help!Xiao Gong1998/12/17 
68Re: How to mesh --- Please help!Tom Davis1998/12/17 
69Re: How to mesh --- Please help!Steve Owen1998/12/17 
70Re: How to mesh --- Please help!Paris Altidis1998/12/17 
74Re: How to mesh --- Please help!Peter Budgell1998/12/17 
77Re: How to mesh --- Please help!Viktor Doundakov1998/12/17 
78Re: How to mesh --- Please help!Jan Christian Anker1998/12/17 
89Re: How to mesh --- Please help!Dan Bohlen1998/12/18 
93Re: How to mesh --- Please help!Clement Tham1998/12/21