Vibrational energy flow analysis of corrected flexural waves in Timoshenko beam – Part II: Application to coupled Timoshenko beams

Article type: Research Article

Authors: Park, Young-Ho | Hong, Suk-Yoon

Affiliations: Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul 151-742, Korea

Note: [] Corresponding author. Tel.: +82 2 880 8757; Fax: +82 2 888 9298; E-mail: syh@snu.ac.kr

Abstract: This paper presents the methodology for the energy flow analysis of coupled Timoshenko beam structures and various numerical applications to verify the developed methodology. To extend the application of the energy flow model for corrected flexural waves in the Timoshenko beam, which is developed in the other companion paper, to coupled structures, the wave transmission analyses of general coupled Timoshenko beam systems are performed. First, power transmission and reflection coefficients for all kinds of propagating waves in the general, coupled Timoshenko beam structures are derived by the wave transmission approach. In numerical applications, the energy flow solutions using the derived coefficients agree well with the classical solutions for various exciting frequencies, damping loss factors, and coupled Timoshenko beam structures. Additionally, the numerical results for the Timoshenko beam are compared with those for the Euler-Bernoulli beam.

Keywords: Energy Flow Analysis (EFA), coupled Timoshenko beam structure, coupling relationships, wave transmission analysis, power transmission coefficient, power reflection coefficient

Journal: Shock and Vibration, vol. 13, no. 3, pp. 167-196, 2006