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Re: Sloshing Damping
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Sloshing Damping
- From: Jnapd(--nospam--at)aol.com
- Date: Fri, 24 Nov 2006 19:35:10 EST
In a message dated 11/22/2006 5:33:11 PM Pacific Standard Time,
22, 2006, at 2:20 PM, refugio rochin wrote:
> why not throw aside
the equations, and run a discreet FE model trying
> to match actual
activity in a tank.
One reason is that the problem isn't trivial. Anyone
who thinks a good
3D element makes him king of the world should pay heed
FEA is like a sharp stick. The newbie
may pick up such a stick and heft
it a little and try out the sharp point
on his finger. 'My, what a nice
stick,' he thinks. He waves it around and
people step aside; he uses it
to spear ants, then beetles and even tiny
lizards. He finds the stick
useful as a lever for moving large objects
with comparative ease.
Picking up a book he sees duellists overcoming
their enemies, obtaining
free drinks and sexual favors with things that
resemble sharp sticks.
So the newbie says to himself, 'This stick makes me
superior to others who have no stick. The stick allows me to
nature and force people to do my bidding. I shall become a
win free drinks and sexual favors because I am a cool
Now engineering is like a tiger. Both are powerful and
elegant but when
mishandled they can be very dangerous. An engineering
project, like a
tiger, requires judgement and a respectful approach
errors can have catastrophic results. Like the large
encountered in engineering practice, the tiger is also
energetic and behaves according to its nature, not always as we
proper. A wise person makes allowances for such behavior and acts
cautiously and thinks over each move carefully.
As for the newbie,
as he strolled along the forest path waving his
stick and spearing
beetles, he encountered a dead tiger. 'Ha!,' says
he. 'I shall illustrate
my power over nature by poking this dead
creature with my stick and thus
gain many free drinks and sexual
favors.' Fortunately for the tiger, but
unfortunately for the newbie,
the tiger was merely napping, and at the
first poke it swatted the
newbie and killed him with a single blow. And
after lunch, the tiger
amused itself by batting around the stick and the
remains of the newbie
before urinating on both and raking leaves and dirt
over the mess.
The lesson, O beloveds, is this: The wise newbie does
marginal skill with a useful tool for knowledge, and takes a
approach to large energetic objects with due regard for the
consequences of poor judgement.
Christopher Wright P.E. |"They
couldn't hit an elephant at
chrisw(--nospam--at)skypoint.com | this
distance" (last words of Gen.
Very poetic ......but True