Vibration of sandwich beams

• Main Author: Backström, Daniel
• Format: Doctoral Thesis
• Language: English
• Published: KTH, Farkost och flyg 2006
• Subjects: Acoustics; Akustik
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4030; http://nbn-resolving.de/urn:isbn:91-7178-395-4

Some aspects and properties of the lateral vibration of sandwich beams are investigated, including the concept of apparent bending stiffness and shear modulus, allowing the sandwich beam dynamics to be approximately described by classical beam theory. A sixth order beam model is derived including boundary conditions, and the free and forced response of some beam configurations analyzed. The possibility of computing material parameters from measured eigenfrequencies, i. e. inverse analysis, is considered. The higher order model is also utilized for investigation of the energy propagation through sandwich composite beams and the transmission over different junctions. === QC 20100630