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Use of the dynamic stiffness method to interpret experimental data from a nonlinear system
(2018-01-01)
The interpretation of experimental data from nonlinear structures is challenging, primarily because of dependency on types and levels of excitation, and coupling issues with test equipment. In this paper, the use of the ...
Using nonlinear jumps to estimate cubic stiffness nonlinearity: An experimental study
(2016-12-01)
Attempts are being made to improve mechanical design by using nonlinearity rather than eliminating it, especially in the area of vibration control and in energy harvesting. In such systems, there is a need to both predict ...
Exploiting knowledge of jump-up and jump-down frequencies to determine the parameters of a Duffing oscillator
(2016-08-01)
This work concerns the application of certain non-linear phenomena - jump frequencies in a base-excited Duffing oscillator - to the estimation of the parameters of the system. First, approximate analytical expressions are ...
On energy transfer between vibrating systems under linear and nonlinear interactions
(Springer, 2009-07-01)
The present study deals with energy transfer in a dissipative mechanical system. Numerical results are given by considering two different potentials and periodical excitation. Specifically, we show energy transfer from ...
On energy transfer between vibrating systems under linear and nonlinear interactions
(Springer, 2009-07-01)
The present study deals with energy transfer in a dissipative mechanical system. Numerical results are given by considering two different potentials and periodical excitation. Specifically, we show energy transfer from ...
Experimental characterization of a nonlinear vibration absorber using free vibration
(2016-04-14)
Knowledge of the nonlinear characteristics of a vibration absorber is important if its performance is to be predicted accurately when connected to a host structure. This can be achieved theoretically, but experimental ...
A virtual experiment for the detection of specific features in the frequency response of a coupled nonlinear and linear oscillator
(European Assoc Structural Dynamics, 2015)
A virtual experiment for the detection of specific features in the frequency response of a coupled nonlinear and linear oscillator
(2014-01-01)
This paper presents an investigation into some practical issues that may be present in a real experiment, when trying to validate the theoretical frequency response curve of a two degree-of-freedom nonlinear system consisting ...
Design and test of an adjustable quasi-zero stiffness device and its use to suspend masses on a multi-modal structure
(2021-05-01)
In some applications, such as ground vibration testing in the aerospace industry, it is of interest to observe the modal behaviour of a slender structure while it is statically loaded. One way of statically loading such a ...