Arana Navarro, Ignacio

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https://academica-e.unavarra.es/handle/2454/48559

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Arana Navarro

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Ignacio

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Ingeniería

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751185

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1707

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Author: Latorre Biel, Juan Ignacio × Start date: 2010 ×

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Now showing 1 - 4 of 4
  • Thumbnail Image
    PublicationOpen Access
    Development of an inexpensive rollover energy dissipation device to improve safety provided by ROPS
    (Elsevier, 2019-02-21) Latorre Biel, Juan Ignacio; Ballesteros Egüés, Tomás; Arana Navarro, Ignacio; Alfaro López, José Ramón; Ingeniería; Ingeniaritza; Institute of Smart Cities - ISC
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    PublicationOpen Access
    Design, manufacturing, validation of a multi-orientation tilt test bench for testing vehicles rollover and tests of ATV-Quad for agricultural applications
    (MDPI, 2021) Bacaicoa Díaz, Julen; Ballesteros Egüés, Tomás; Arana Navarro, Ignacio; Aginaga García, Jokin; Latorre Biel, Juan Ignacio; Ingeniería; Ingeniaritza; Institute of Smart Cities - ISC
    A rollover test bench has been designed, manufactured, and validated for analyzing the all-terrain vehicle (ATV)-Quad overturn of diverse vehicles in different configurations, such as installing a rollover protection system (ROPS), considering drivers of different physical constitutions, the appropriate use of safety belts, or having a full or empty fuel tank. The main purpose of this research is to determine the tilt angle of the vehicle that triggers the ATV-Quad overturn. The scope of the design and development of the newly conceived bench include the mechanical structure, the electronics and the control. It can simulate static and dynamic rollover in different directions. As a main conclusion, it can be stated that the performance of the test bench was successful, since it allowed for the development of several ATV models, equipped with different dummies, in a variety of configurations. In particular, it was possible to assess the effectivity of the AD-ROPS system (automatically deployed ROPS), regarding the protection of the driver of the vehicle. Moreover, multiple tests, performed with diverse ATV-Quads in the developed bench and in different configurations, have been reported and their results discussed.
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    PublicationOpen Access
    Characterisation of mechanical energy absorbers developed to complement of roll-over protection structures in agricultural vehicles
    (Elsevier, 2019-10-25) Latorre Biel, Juan Ignacio; Benito Amurrio, Marta; Pérez Ezcurdia, Amaya; Arana Navarro, Ignacio; Alfaro López, José Ramón; Ingeniería; Ingeniaritza; Institute of Smart Cities - ISC
    Roll-over protection structures (ROPS) and the use of safety belt is a successful combination in agricultural vehicles. If during an accident, a vehicle overturns, a ROPS is designed to deform plastically, absorbing potential energy of the vehicle, while not infringing the safety volume around the driver. The addition of mechanical energy absorbers (MEA) to a ROPS might enhance this behaviour, improving the safety provided. A disc-shaped mechanical energy absorber, designed for this purpose, is analysed and some geometrical and manufacturing features that influence their behaviour are described. Tensile tests of 6 different variants of this absorber have been carried out. The obtained loadedisplacement curves have been linearized to facilitate the calculation of quantitative parameters that can be used to characterise and compare the behaviour of the tested elements. The relation between some geometrical and manufacturing features of the absorbers and the calculated parameters is discussed. The results show that the proposed mechanical energy absorbers present enough geometrical and manufacturing adjustable variables to cover a wide range of applications.
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    PublicationOpen Access
    The integration of mechanical energy absorbers into rollover protective structures to improve the safety of agricultural tractors in the event of rollover
    (MDPI, 2024) Alfaro López, José Ramón; Pérez Ezcurdia, Amaya; Latorre Biel, Juan Ignacio; Arana Navarro, Ignacio; Benito Amurrio, Marta; Villanueva Roldán, Pedro; Ingeniería; Ingeniaritza; Institute of Smart Cities - ISC; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, PJUPNA1912
    The combination of safety belts and rollover protective structures (ROPSs) is key in improving the safety of agricultural tractors in the event of rollover. However, we also have the opportunity to enhance the security provided by each ROPS; one such example is the combination of this safety device with adequate mechanical energy absorbers (MEAs). Inexpensive disc-shaped MEAs can be included in the anchoring points of a ROPS onto the chassis of a tractor. Three configurations of ROPS combined with MEAs were tested during the application of loads that simulated the effects of side rollover in the vehicle. The tested configurations included a blank MEA as a reference case alongside a single MEA and a stack assembly containing both elements. The results of the tests show that both the deformation of the ROPS itself and the strain energy are larger in the case of blank MEAs; thus, there is also a risk that the clearance zone will be infringed upon and that the protective structure will collapse. We can conclude that the implementation of an appropriate MEA in ROPS reduces the deformation of the ROPS itself and its strain energy in cases of vehicle rollover; hence, the safety provided by such protection systems may be improved at a low cost.