Lin:

As Mahdi indicated, you can use either TRANS109 or TRANS126 for 2D
electrostatic-structural analyses, and you can use TRANS126 for 3D analyses.
Both of these elements are directly coupled electrostatic-structural elements
with both VOLT and displacement DOFs.

You can also solve coupled electrostatic-structural problems using the
sequential approach with single-field elements.  Before Release 8.0 of ANSYS
Multiphysics, this approach would use the ESSOLV macro.  In Release 8.0 of ANSYS
Multiphysics, a multi-field solver was also introduced.  Either approach will
work, however if you have access to Release 8.0, I recommend the multi-field
solver approach.

Regards.

Daniel Shaw
ANSYS, Inc

ANSYS 2004 Conference & Exhibition:
Pittsburgh Hilton and Towers: 24-26 May, 2004
Review Papers Due: 15 October, 2003
Final Papers Due: 1 February, 2004
www.ansys.com/conf_2004/index.htm

********************************************************************************
**

-----Original Message-----
From: mems-talk-bounces+daniel.shaw=ansys.com@memsnet.org
[mailto:mems-talk-bounces+daniel.shaw=ansys.com@memsnet.org]On Behalf Of
mahdi bagheri
Sent: Monday, February 23, 2004 11:28 PM
To: General MEMS discussion
Subject: Re: [mems-talk] Coupling Simulation in ANSYS


Dear Lin
I think you can use TRANS126 or TRANS109 ( TRANS109 is better , because it is a
2-D element).

Regards
Mahdi Bagheri


"Y.C. Lin"  wrote:
Dear all:

I would like to simulate my specimen by ANSYS.
My model is a coupling problem (Electrostatic and Mechanical Domains).
How should I simulate a cantilever beam which is loaded by the electrostatic
forces?
Which element is the most suitable for me to use?
Is the simulation result crediable?

Thank you for your answering.

Regards,

Y.C. Lin
National Tsing Hua University, Taiwan.





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