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Appl. Sci. 2018, 8(9), 1612; https://doi.org/10.3390/app8091612

A Simplified Methodology to Evaluate the Design Specifications of Hydraulic Components

1
ROQCAR SL, Antonio Figueras 68, 08551 Tona, Spain
2
Department of Fluid Mechanics, LABSON, Universitat Politecnica de Catalunya, Campus Terrassa, Colom 7, 08222 Terrassa, Spain
*
Author to whom correspondence should be addressed.
Received: 29 July 2018 / Revised: 30 August 2018 / Accepted: 6 September 2018 / Published: 11 September 2018
(This article belongs to the Special Issue Power Transmission and Control in Power and Vehicle Machineries)
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Abstract

The fatigue of a hydraulic component inherently varies due to various factors that can be divided into two categories: structural and load spectrum variability. The effects of both variabilities must be considered when determining fatigue life. Compared with the structural variability, determining the variability in the load spectrums is more difficult because the service conditions are complicated and the measurements of the load parameters are slow and expensive. The problem that arises when studying the fatigue behaviour of such components is the transferability of short data samples from real-life load histories, which are application-dependant, to laboratory test methods. Derived from the experimental background and know-how of the authors, this paper proposes a methodology that allows the definition and establishment of the hydraulic cylinder design specificactions, while taking into account the probabilistic characterisation of the load spectrum variability. This methodology could be extrapolated to other hydraulic or mechanical components. View Full-Text
Keywords: fatigue; pressure trace; pressure spectrum; damage factor; cumulative damage; off-road mobile machinery; hydraulic components; hydraulic components specifications; laboratory testing fatigue; pressure trace; pressure spectrum; damage factor; cumulative damage; off-road mobile machinery; hydraulic components; hydraulic components specifications; laboratory testing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Roquet, P.; Gamez-Montero, P.J.; Castilla, R.; Raush, G.; Codina, E. A Simplified Methodology to Evaluate the Design Specifications of Hydraulic Components. Appl. Sci. 2018, 8, 1612.

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