Airplane Vibrations Using Cantilevered Component Modes 680205

The necessity of airplane structural vibration analysis for purposes of design substantiation is indisputed. This paper presents a mathematical techique that accomplishes this end. The technique, once applied to a given airplane, produces an airplane analog which may be modified to include product improvements or to resolve certain areas of difficulty.
The mathematical technique is restricted to airplane self-equilibrating motions in n degrees of freedom using cantilevered component modes and a discrete-particle structural component distribution. Equations of motion are developed using energy principles. Particular importance is placed on the manner of generating these equations since this process determines the vibration analysis effectivity, that is, the inertia and stiffness expressions are specified in certain system generalized coordinates and the resulting eigensystem solutions are obtained using a digital computer. Application of the mathematical technique is illustrated using an example problem.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.