Abstract
Purpose
This paper presents an experimental and numerical study to evaluate the impact energy dissipation, proposing a friction damper with the use of layers (LFD) for the dissipation of kinetic energy generated as a consequence of dynamic loads in an accidental fall due to work at heights.
Methods
The study is performed by experimentation using a free-fall bench and numerical modeling using the finite element software Abaqus. The energy dissipation analysis is presented by comparing the system displacements for different impact masses. The geometry of the dissipator elements for a particular case of working at heights is proposed.
Results
The results show the feasibility of applying the LFD for dynamic loads by dissipating 100% of the kinetic energy caused by an accidental fall for particular conditions.
Conclusions
The use of layer elements as a preload mechanism allows the increase of the friction force with respect to the displacement of the system, increasing the energy dissipation capacity. In addition, the relationship of the geometrical parameters of the LFD allows the sizing of the layer elements and, in turn, the increase in the energy dissipation capacity according to the user's needs.
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Source: Domínguez et al.
Source: Domínguez et al.
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The data used in this research were obtained by the authors.
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Domínguez-Gurría, M.A., Szwedowicz, D., Martínez, E. et al. Anti-fall Safety System with Variable Stiffness Layers. J. Vib. Eng. Technol. 12, 2035–2041 (2024). https://doi.org/10.1007/s42417-023-00962-0
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DOI: https://doi.org/10.1007/s42417-023-00962-0