topic Re: Finite element mesh size in Robot Structural Analysis Forum

Finite element mesh size

Anonymous — Mon, 14 Jan 2013 11:06:33 GMT

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

Re: Finite element mesh size

Anonymous — Mon, 14 Jan 2013 11:34:39 GMT

Fine mesh is more accurate but takes longer to calculate.

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

Re: Finite element mesh size

Anonymous — Tue, 15 Jan 2013 05:05:02 GMT

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)

Re: Finite element mesh size

Anonymous — Tue, 15 Jan 2013 06:56:08 GMT

thanks igos

Re: Finite element mesh size

Anonymous — Tue, 15 Jan 2013 17:16:58 GMT

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

Re: Finite element mesh size

joseph.a.abouzeid — Thu, 24 May 2018 12:43:30 GMT

Hi egos, would you mind telling me how did you get this formula?

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