# Finite element analysis alternative?

1. Nov 21, 2004

### crazybeautiful

finite element analysis alternative??

hi do you happen to know any alternative for using Finite Element Analysis(FEA)? i need to know it badly.. hope someone could help. thanks!

2. Nov 21, 2004

### PerennialII

If you can be a bit more specific about your problem I'm sure people can came up with more alternatives ... ? In principle any numerical method suited for solution of partial differential equations is a potential alternative, if considering FEM - like methods with similar properties & "power" when applied to complex PDE problems there is stuff like the boundary element method, people still use the finite difference method, meshfree methods etc.

3. Nov 21, 2004

### enigma

Staff Emeritus
Make some simplifying assumptions and derive the equations of motion from first principles.

FEA is a much easier alternative.

4. Nov 21, 2004

### Astronuc

Staff Emeritus
Other than being able to solve a PDE analytically, FEM and FDM are pretty much it.

However, one can employ a relatively new technique, BEM or Boundary Element Method - http://www.boundary-element-method.com/

The method depends on the problem.

5. Nov 21, 2004

### PerennialII

The IFER site has some links to FEA alternatives for PDEs :

(if its down as I've found for some reason lately take it e.g. from google cache).

Last edited by a moderator: May 1, 2017
6. Dec 16, 2004

### LunchBox

You could also try energy methods...

I recommend:
Galerkin's Method
Rayleigh's Quotient
Rayleigh-Ritz Method
Assumed Modes Method

Any good structures or vibrations text will give you what you need.

Cheers...

7. Dec 16, 2004

### cronxeh

I understand this is a stretch.. but can anyone recommend any open source.. or even better.. a free FEA/FDM software for windows or *nix

8. Dec 16, 2004

### PerennialII

I use this nowadays for most of my analyses :

http://cern49.ce.uiuc.edu/cfm/warp3d.html [Broken]

its a complete package, constantly under serious development and state-of-the-art, kicks the butt of most commercial software.

Last edited by a moderator: May 1, 2017
9. Dec 30, 2004