That is exactly what we were arguing about. So very well said. My boss read
that so he laughed and pointed fingers at my face. :^P
Thanks,
--
Derek Sevier
Mechanical Engineer
Quality Corporation
derek.s@donkeyforklift.com
www.donkeyforklift.com
-----------
"David Burton" wrote in message
news:677F2AE6C2A14F5569B86133B8DC0329@in.WebX.maYIadrTaRb...
> I would go ahead and build your machine to test the parts. FEA is not a
> replacement for testing the final design - it's only a tool to check the
> design of critical areas before you spend money on the tooling. No matter
> how good the FEA package is you are going to need to make assumptions
about
> the material properties in different areas of your part. Depending on
what
> kind of casting it is you can have porosity, inclusions or metal that does
> not cool evenly and will produce internal stresses.
>
> A relatively simple test fixture can demonstrate very quickly if you have
> made an error in your assumptions - plus, are you comfortable enough with
> your process to guarantee to your boss that there won't be any field
> problems based on an FEA analysis. If your boss wants real world testing
> you better give it to him or you'll never hear the end of it if something
> goes wrong in the field
>
> --
> Dave Burton
> SICO Inc
> http://www.sicoinc.com
> "Derek Sevier" wrote in message
> news:F452D912E9FD3458C113474F9C395A7E@in.WebX.maYIadrTaRb...
> > Anyone know of a cheap one? I only want to do one or two casting
parts
> > that I would like to check the stress areas. The one that I have been
> using
> > is from MDT but it is not a good one and it doesn't do well with fillets
> and
> > complex shapes. My boss wanted to do some kind of a real world testing
on
> > the part which will be a pain because I will have to design a testing
> > machine to see if it will ever crack or wear-out. I need some advice for
a
> > good cheap FEA or someone could help me by having me send you the model
> and
> > you do the FEA and send it back so I can show it to him...
> >
> > Thanks!
> > --
> > Derek Sevier
> > Mechanical Engineer
> > Quality Corporation
> > derek.s@donkeyforklift.com
> > www.donkeyforklift.com
> >
> > -----------
> >
> >
>
>