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2 Machine Dynamics Research

2 2014

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Modelling and Analysis of Damping in Slides of Truck-Mounted Crane Boom

Sochacki W., Bold M.

Machine Dynamics Research

2014

Vol. 38, No. 2

133-139

This study formulates and solves the problem of transverse damped vibrations in a crane boom of a truck-mounted crane. Dissipation of vibration energy in the model adopted results from motion resistance in slides between the moving components of the crane boom. A damping using Kelvin-Voigt model that characterizes dynamic properties of slides was added to the system. The effect of changes in damping coefficient and rigidity of springs on eigenvalues of the system studied was presented. The damped vibration frequencies and the degree of amplitude decay were calculated.

Influence of Internal and Constructional Damping on Vibrations of Telescopic Boom of Truck Crane

Sochacki W., Bold M.

Machine Dynamics Research

2014

Vol. 38, No. 4

51-58

This study formulates and solves the problem of transverse damped vibrations in a crane boom of a truck-mounted crane. Dissipation of vibration energy in the model adopted in the study occurs as a result of internal damping of the viscoelastic material (rheological Kelvin-Voigt model) of the beams that model the system and motion resistance in slides between the moving components of the crane boom. Damped frequencies of vibrations and degree of amplitude decay were calculated. The study also presents eigenvalues of system vibration with respect to changes in damping coefficients and system geometry for selected rigidity of springs.