Response of a Flexible Printed Circuit Board to Periodic Shock Loads Applied to its Support Contour

[+] Author and Article Information
E. Suhir

AT&T Bell Laboratories, Murray Hill, NJ 07974

J. Appl. Mech 59(2S), S253-S259 (Jun 01, 1992) doi:10.1115/1.2899498 History: Received April 17, 1990; Revised May 24, 1991; Online March 31, 2008


Treating a printed circuit board (PCB) as a thin flexible rectangular plate, we evaluate its dynamic response to periodic shock loads applied to the support contour. The effect of the load periodicity on the amplitudes, accelerations, and stresses is analyzed for transient and steady-state damped linear vibrations, as well as for steady-state undamped nonlinear vibrations. It is shown that the transient nonresonant linear response can exceed the steady-state response by up to two times, and that the linear approach can be misleading in the case of a nondeformable support contour and intense loading. The obtained results can be of help when evaluating the accelerations, experienced by surface mounted electronic components and devices, and the dynamic stresses in a PCB of the given type, dimensions, and support conditions.

Copyright © 1992 by The American Society of Mechanical Engineers
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