Dynamic behavior of three-dimensional composite beam under flapwise excitation

作者：Eftekhari Mojtaba^*

来源：Journal of Mechanical Science and Technology, 2016, 30(8): 3515-3521.

DOI：10.1007/s12206-016-0711-7

• Composite beam
• Flapwise excitation
• Post-critical behavior

In this paper, dynamic response of a symmetrically laminated composite beam is studied under harmonic base excitation. The base is subjected to flapwise excitation tuned to the primary resonance in the presence of 2:1 internal resonance between the out-of-plane bending motion and the in-plane bending and torsional motions. In literature, modified modulation equations of composite beam have been derived and the stability of fixed points has been investigated in frequency and forced responses. However, post-critical behavior of the modulation equations is studied in this study. In bifurcation diagrams sketched near primary and internal resonances, it appears that detuning the flapwise excitation amplitude causes phenomena like jumps, period doubling, multi and quasi-periodic solutions to occur.

• 出版日期2016-8