In most of commercial package of FEA,
1 G loading means that you apply 1 G gravity field in your mechanical
system.
It follows ,therefore, that you have body loading on your mechanical
structure with its own weight.

"My question is if I am placing a 1
nanogram mass on a beam weighing 0.1 nanogram, am I applying 10 g's of
acceleration to the beam?"

Answering your question, you are applying the body load of (1 + 0.1) X
9.8XE9 as a static loading.
It is not 10 g's of acceleration.

And please be consistent in your 1 G unit.
If you are using MKS, it is going to 9.8 m/s^2.
If you are using nanoMKS, it is going to be 9.8XE9 nm/s^2.


With regards,

Haesung Kwon, Ph. D
Senior Staff MEMS Engineer

Transparent Networks Inc.
471B El Camino Real
Direct: 408.236.3013
Main: 408.236.3000
Fax: 408.615.6937
hkwon@transparentnetworks.com
http://www.transparentnetworks.com/







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Sent: Tuesday, December 04, 2001 9:01 AM
To: mems-talk@memsnet.org
Subject: mems-talk digest, Vol 1 #110 - 1 msg


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Today's Topics:

   1. Acceleration in g (Humud Said)

--__--__--

Message: 1
Date: Sat, 1 Dec 2001 01:29:33 -0700 (MST)
From: Humud Said 
To: 
Subject: [mems-talk] Acceleration in g

Hi

I am a little unclear about the acceleration as specified in g. I am
using
IntelliSuite and the only way I have found of applying force is by
applying acceleration in g units. My question is if I am placing a 1
nanogram mass on a beam weighing 0.1 nanogram, am I applying 10 g's of
acceleration to the beam?

any help will be greatly appreciated.

Humud


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