Improving the performance of industrial machines with variable stiffness springs
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Tom Verstraten [1] ; Pablo Lopez-Garc ıa [1] ; Bert Lenaertsb [2] ; Branimir Mrak [2] ; Dirk Lefebera [1]
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[1] Vrije Universiteit Brussel
Vrije Universiteit Brussel
Arrondissement Brussel-Hoofdstad, Bélgica
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[2] Flanders Make
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- Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 50, Nº. 1, 2022, págs. 115-134
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
In several industrial applications, drivetrains impose highly dynamic oscillating motions to inertial loads. By introducing springs, the system’s natural frequencies can be matched to the required operating frequencies, lowering energy consumption of the drivetrain. However, fixed-stiffness springs only have a positive effect in a limited range of frequencies. To solve this problem, variable stiffness springs are proposed. A discussion of the effect of the series and parallel topology, as well as the possibility of adapting the spatio-temporal characteristics of the motion to the spring, is presented. Furthermore, a practical implementation of a variable stiffness spring is proposed. Its effectiveness is validated in experiments.
