A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mass damper for damping vibrations of a structure, structure with such a mass damper and method for adjusting the natural frequency of a mass damper
The present invention refers to a mass damper 1 for reducing vibrations of a structure 2 with a pendulum mass 3 and a damping means 4, wherein the mass damper 1 has at least three bearings 5 with which the pendulum mass 3 is movably supported on the structure 2 such that it can execute pendulum movements and each of the bearings 5 has at least one pendulum plate 6 with a concave bearing surface 7 and a sliding shoe 8 arranged movably thereon with a convex counter surface 9. In accordance with the invention, the bearing surfaces 7 and the associated counter surfaces 9 are curved with a constant radius of curvature R and all bearings 5 have a lowest possible friction between the counter surface 9 and the bearing surface 7. The invention also extends to a structure 2 with such a mass damper and a method for adjusting the natural frequency of a mass damper 1, in which the natural frequency of the pendulum mass 3 can be adjusted independently of one another in both main directions by displacing and/or rotating the pendulum plates 6. The invention also extends to the damping means 4, which can be implemented with linear viscous passive damping, with square viscous passive damping or with controlled damping, in order to tune this damping together with the friction damping of the bearings to the optimum damping of the mass damper 1.
Mass damper for damping vibrations of a structure, structure with such a mass damper and method for adjusting the natural frequency of a mass damper
The present invention refers to a mass damper 1 for reducing vibrations of a structure 2 with a pendulum mass 3 and a damping means 4, wherein the mass damper 1 has at least three bearings 5 with which the pendulum mass 3 is movably supported on the structure 2 such that it can execute pendulum movements and each of the bearings 5 has at least one pendulum plate 6 with a concave bearing surface 7 and a sliding shoe 8 arranged movably thereon with a convex counter surface 9. In accordance with the invention, the bearing surfaces 7 and the associated counter surfaces 9 are curved with a constant radius of curvature R and all bearings 5 have a lowest possible friction between the counter surface 9 and the bearing surface 7. The invention also extends to a structure 2 with such a mass damper and a method for adjusting the natural frequency of a mass damper 1, in which the natural frequency of the pendulum mass 3 can be adjusted independently of one another in both main directions by displacing and/or rotating the pendulum plates 6. The invention also extends to the damping means 4, which can be implemented with linear viscous passive damping, with square viscous passive damping or with controlled damping, in order to tune this damping together with the friction damping of the bearings to the optimum damping of the mass damper 1.
Mass damper for damping vibrations of a structure, structure with such a mass damper and method for adjusting the natural frequency of a mass damper
DISTL JOHANN (author)
2023-05-25
Patent
Electronic Resource
English
| European Patent Office | 2021
| European Patent Office | 2021
| European Patent Office | 2020
| European Patent Office | 2020
Plate type viscous damper, tuned mass damper and damper coefficient adjusting method
| European Patent Office | 2021