Synthesis of stiffness and mass matrices from experimental vibration modes.With highly complex structures, it is sometimes desirable to derive a dynamic model of the system from experimental vibration data. This paper presents algorithms for synthesizing the mass and stiffness matrices from experimentally derived modal data in a way which preserves the physical significance of the individual mass and stiffness elements. The synthesizing procedures allow for the incorporation of other mass and stiffness data, whether empirical or based on the analyst's insight. The mass and stiffness matrices are derived for a cantilever beam example and are compared with those obtained using earlier techniques.
Document ID
19720026612
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ross, R. G., Jr. (California Institute of Technology, Jet Propulsion Laboratory,Pasadena Calif., United States)