PSN-L Email List Message
Subject: Re: Tungsten Rods (again)
From: Brett Nordgren Brett3nt@.............
Date: Fri, 04 Jul 2008 22:46:55 -0400
One correction to what I'd written previously.
In corresponding with Chris and re-reading Dr. Peters' paper, I have had to
conclude that for pivots in general, as well as for other elements which
aren't specifically designed to be velocity dampers, their resistance force
has no reason to be accurately proportional to velocity. I believe that
velocity relation is needed to derive the exponential shape for the
envelope decay. Under some conditions air resistance might possibly act as
a form of velocity damper, but hinges in general, probably
don't. Therefore, as Chris says, the oscillation decay probably isn't
going to be exponential to any great degree of accuracy.
At 04:07 PM 7/3/2008 -0700, you wrote:
>I have been taking my time to get my first Lehman up and running.
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