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Robot Structural Analysis

Contributor
Posts: 22
Registered: ‎01-10-2012

Finite element mesh size

952 Views, 4 Replies
01-14-2013 03:06 AM

Hello, any advice about mesh size calculating the RC panel. I tried mesh size from 0,2m to 1m and I got quite difference results, and if mesh size is small- 0,2m, I get a big amount of reinforcement, but only in a very small area (0,2x0,2m).

What is the optimal size of mesh calculating RS panels? Thanks

Valued Mentor
Posts: 653
Registered: ‎09-07-2011

Re: Finite element mesh size

01-14-2013 03:34 AM in reply to: spspro

Fine mesh is more accurate but takes longer to calculate.

You need to find a good balance between speed and accuracy.

Valued Contributor
Posts: 57
Registered: ‎05-05-2011

Re: Finite element mesh size

01-14-2013 09:05 PM in reply to: spspro

Hello, I'm using following rules for the RC slabs:

a = min(2h;(1/10)*l), where

a - element size;

h - thickness of the slab;

l - span of the slab.

Also, after meshing you have to estimate mesh quality (check for triangles with acute angle and for elementswith quite small ratio = a1/a2, where a1 - the smaller dimension of element, a2 - the bigger dimension of element)

Contributor
Posts: 22
Registered: ‎01-10-2012

Re: Finite element mesh size

01-14-2013 10:56 PM in reply to: igos

thanks igos

Valued Contributor
Posts: 57
Registered: ‎05-05-2011

Re: Finite element mesh size

01-15-2013 09:16 AM in reply to: spspro

spspro,

You are welcome, also I can recommend you this quite useful guide: http://www.2shared.com/file/0GSMZ7D8/How-to-Design-rc-Flat-Slabs-Us.html