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RE: Design Checking - Here and Now and Future of Engineering

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"To err is human.  To really screw up, you use a computer..."
Anonymous

David A. Topete, SE
Structural Engineer
 
GFDS Engineers
543 Howard St., First Floor
San Francisco, CA 94105
v : (415) 512-1301 x21
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dtopete(--nospam--at)gfdseng.com
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-----Original Message-----
From: Christopher Wright [mailto:chrisw(--nospam--at)skypoint.com] 
Sent: Friday, December 15, 2006 2:55 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Design Checking - Here and Now and Future of Engineering


On Dec 15, 2006, at 4:01 PM, refugio rochin wrote:

>  FEM is easy to setup.  It is not complicated. 

Nonsense.  If FEA results are to be trusted, the person doing the 
modeling needs to understand the physics of the problem. Nowhere is 
this more true than with seismic work, but it's pretty much true for 
any engineering analysis. You can't separate the model from the physics 
that the model is supposed to mimic. Some kid who doesn't understand 
the notion of a load path or modal response combination is likely to 
ignore or misinterpret important design features because he doesn't 
understand their significance.

It's like that with CAD, too. Too many think that an engineering design 
is just the pictures--it isn't. It's an organized communication of 
information required to produce an artifact. If it's not organized and 
unambiguous, things get screwed up and left out. You can't just put a 
CAD monkey in front of a monitor and expect engineering design.

CAD and FEA are tools, not solutions. The effectiveness of a tool 
depends on the abilities of the individual using it.


Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw(--nospam--at)skypoint.com   | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania 
1864)
http://www.skypoint.com/~chrisw/


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