Author Type

Graduate Student

Date of Award

1994

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Thesis/Dissertation Advisor [Chair]

Stevens, Karl K.

Abstract

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.

Extent

104 p.

Comments

College of Engineering and Computer Science|FAU Electronic Theses and Dissertations Collection|Thesis (M.S.)--Florida Atlantic University, 1994.|College of Engineering and Computer Science

Identifier

FADT15015

Format

pdf

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