ABSTRACT
This chapter attempts to provide the engineer with vibration and shock design procedures. It deals with a brief review of terminology and vibration of one-degree-of-freedom systems before applying the equations and concepts to selected electronic components. Even well-designed products may be built with defective components. The natural frequency is the most important parameter for vibration and shock design of Printed Wiring Boards (PWBs). Finite-element analysis is one of the most powerful tools for modem design engineers. It provides the designer with an analysis tool to accurately model a PWB without having to build a prototype and subject it to vibration testing. Periodic and harmonic motions are characteristic of deterministic vibrations because an instantaneous value for displacement, velocity, or acceleration can be predicted at any time. Shock can develop significant internal forces that diminish rapidly. In order to discuss vibration and shock loading, some basic definitions and terminology must be reviewed.
