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Vibration reduction of a pitch-roll ship model with longitudinal and transverse absorbers under multi excitations. (English) Zbl 1205.70019

Summary: This paper presents an application of passive vibration control to a non-linear spring pendulum system simulating a ship’s roll motion. This leads to a four-degree-of-freedom (4-DOF) system subjected to multi external and parametric excitations. Two absorbers in the longitudinal and transverse directions are designed to control the vibration near the simultaneous primary, sub-harmonic and internal resonance where system damage is probable. The theoretical results are obtained to second order approximations applying the multiple scale perturbation technique (MSPT). The stability of the steady-state solution near the simultaneous resonance case is investigated and studied applying frequency response equations. The effects of the absorbers and some system parameters on the vibrating system are studied numerically. The simulation results are achieved using MATLAB 7.0 programs [L. F. Shampine et al., Solving ODEs with MATLAB. Cambridge: Cambridge University Press. (2003; Zbl 1040.65058)]. Comparison with the available published work is reported.

MSC:

70K99 Nonlinear dynamics in mechanics
34C25 Periodic solutions to ordinary differential equations

Citations:

Zbl 1040.65058

Software:

Matlab; bvp4c
Full Text: DOI

References:

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