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Journal of Sandwich Structures and Materials
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11/6/519    most recent
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A New 2D Local Vibrational Model for Unidirectional Clamped—Clamped Sandwich Structure with Edge Stiffeners

Stanislaw Karczmarzyk

Institute of Machine Design Fundamentals Warsaw University of Technology Narbutta 84, Warszawa 02-524, Poland, karczmarzyk_st{at}poczta.onet.pl

Flexural vibration of a clamped—clamped, three-layer, one-span sandwich, unidirectional structure composed of isotropic layers is considered in the article. A new single series model of the 2D problem, obtained within the local theory of linear elastodynamics, is presented. Very realistic boundary conditions at edges of the structure, which correspond to the engineering solution with the edge stiffeners, are introduced and satisfied. Eight eigenfrequencies of the structure for two sets of input data are calculated, according to the new model, and compared with numerical and experimental results existing in the literature. A detail comparative analysis of the results is done and some conclusions are presented.

Key Words: flexural vibration • eigenfrequencies • sandwich beam • edge stiffeners • 2D local model • linear elastodynamics • single series expansion.

This version was published on November 1, 2009

Journal of Sandwich Structures and Materials, Vol. 11, No. 6, 519-538 (2009)
DOI: 10.1177/1099636209104529
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