Note
College of Engineering and Computer Science
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1994
Description
Dynamic modeling of Printed Circuit Boards (PCBs) with mounted components, was
investigated via the example of a PC network card by removing components in different stages and
examining the resulting effects on the modal properties. Modal test results were compared with those
from an ANSYS finite element analysis.
Questions considered were: a) Do added components have a significant effect on the modal
properties of a PCB and what are the effects ? b) How much variation is there in natural frequencies
from board to board and test to test for a single board? c) Can a board with attached components
reasonably be modeled as a uniform elastic plate with an "equivalent" density and modulus of
elasticity?
Results obtained indicate that added components do have significant effects on the board
modal properties, less so for the lower modes than for the higher modes. There was only slight
variation in the natural frequencies from board to board and from test to test for a single board. For
the first two modes of vibration, it was found that the board considered could be modeled as a
uniform elastic plate with "equivalent" properties, provided an appropriate value of equivalent elastic
modulus was used. General findings, applicable to any PCB design, are presented.
investigated via the example of a PC network card by removing components in different stages and
examining the resulting effects on the modal properties. Modal test results were compared with those
from an ANSYS finite element analysis.
Questions considered were: a) Do added components have a significant effect on the modal
properties of a PCB and what are the effects ? b) How much variation is there in natural frequencies
from board to board and test to test for a single board? c) Can a board with attached components
reasonably be modeled as a uniform elastic plate with an "equivalent" density and modulus of
elasticity?
Results obtained indicate that added components do have significant effects on the board
modal properties, less so for the lower modes than for the higher modes. There was only slight
variation in the natural frequencies from board to board and from test to test for a single board. For
the first two modes of vibration, it was found that the board considered could be modeled as a
uniform elastic plate with "equivalent" properties, provided an appropriate value of equivalent elastic
modulus was used. General findings, applicable to any PCB design, are presented.
Language
Type
Form
Extent
104 p.
Subject (Topical)
Identifier
AAI1356828
Additional Information
College of Engineering and Computer Science
FAU Electronic Theses and Dissertations Collection
Thesis (M.S.)--Florida Atlantic University, 1994.
Date Backup
1994
Date Text
1994
Date Issued (EDTF)
1994
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 03:31:04", modified_by="staff:fcllz", modification_date="2011-01-06 13:09:16"
IID
FADT15015
Issuance
monographic
Organizations
Attributed name: Florida Atlantic University
Attributed name: College of Engineering and Computer Science
Attributed name: Department of Ocean and Mechanical Engineering
Person Preferred Name
Vallamattam, Bijoy Kurian.
Graduate College
Physical Description
104 p.
application/pdf
Title Plain
Effects of added components on the dynamic modeling of printed circuit boards
Use and Reproduction
Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
http://rightsstatements.org/vocab/InC/1.0/
Origin Information
monographic
Boca Raton, Fla.
Florida Atlantic University
1994
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, Fla.
Sub Location
Digital Library
Title
Effects of added components on the dynamic modeling of printed circuit boards
Other Title Info
Effects of added components on the dynamic modeling of printed circuit boards