Applications of Structural Dynamics Modification 801125

The use of Structural Dynamics Modification (SDM) for determining changes in the dynamic characteristics of mechanical structures due to changes in their mass, stiffness, or damping properties, is presented. SDM requires as input the modal properties of the unmodified structure, which can be obtained either from a modal test or from finite element analysis. Structural modifications are then modeled as the addition (or removal) of mass, stiffness, or damping to the structure, and the resulting modal properties of the modified structure are determined. This same procedure can also be used to model the connection of two or more substructures, or the attachment of “tuned” vibration absorbers to a structure, and it predicts the new dynamic properties of the modified structure or coupled substructures.


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


Members save up to 16% 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.