This paper presents a study of the lateral vibrations of straight and curved cables with no axial pre-load. For the computation of the vibration transmissibility we used finite elements based on the Euler-Bernoulli theory. The dissipation of energy was studied with viscous- and structural-damping models, where the Rayleigh coefficients and the frequency dependence of the loss factor were identified.
COBISS.SI-ID: 9824027
The dynamic properties of joints are extremely difficult to model accurately using a purely analytical approach. However, these properties can be extracted from experimental data. In this paper we present a method for establishing a theoretical model of a joint from the substructures and assembly frequency-response function (FRF) data. The identification process considers not only translational, but also rotational degrees of freedom (RDOFs). The validity of the proposed method is demonstrated numerically and experimentally.
COBISS.SI-ID: 10470683
We propose an approach to the vibration modeling of spatially curved steel wires with a casing and a contact between the outer casing and the inner steelwire. For the energy dissipation the proportional viscous damping model and the structural damping model are used. The damping parameters are identified from the Nyquist diagram and from the continuous wavelet transform. The model also predicts that the dynamic modulus of the elasticity of a steel wire does not have a major influence on the level ofvibration transmission, which was also validated by experiment.
COBISS.SI-ID: 10936347
A problem of establishing a theoretical model of a joint from the measured frequency-response function (FRF) data is discussed in this paper. The model of the joint is considered as a coupled dynamic stiffness matrix, which generally includes six degrees of freedom (DoFs).
COBISS.SI-ID: 10818075
The aim of this study was to develop an efficient and realistic numerical model in order to predict the dynamic response of belt drives. The belt was modeled as a planar beam element based on an absolute nodal coordinate formulation. A viscoelastic material was adopted for the belt and the corresponding damping and stiffness matrices were determined.
COBISS.SI-ID: 10609947