Development of an Energy Recovery Device Based on the Dynamics of a Semi-trailer

Sicilia, Massimo; Simone, Marco Claudio De

doi:10.1007/978-3-030-50491-5_8

Cited by 16 publications

(2 citation statements)

References 39 publications

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“…The static analyses were mainly carried out with the aim of setting all of the basic parameters necessary for the simulations (the type of material, friction, constraint conditions, and contact algorithms used). Once all of the basic parameters had been appropriately set (by checking for the presence of any penetration and assessing that the distribution and stress values were acceptable), the model was further complicated by inserting an airbox and carrying out coupled Eulerian–Lagrangian (CEL) analyses [ 40 , 41 , 42 ]. The parameters that affected this second type of analysis were related to the evaluation of the acoustic emissions, for which we focused on the friction, lubrication, and rotation speed.…”

Section: Resultsmentioning

confidence: 99%

Noise Reduction in Spur Gear Systems

Liguori

Armentani

Bertocco

et al. 2020

Entropy

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This article lists some tips for reducing gear case noise. With this aim, a static analysis was carried out in order to describe how stresses resulting from meshing gears affect the acoustic emissions. Different parameters were taken into account, such as the friction, material, and lubrication, in order to validate ideas from the literature and to make several comparisons. Furthermore, a coupled Eulerian–Lagrangian (CEL) analysis was performed, which was an innovative way of evaluating the sound pressure level of the aforementioned gears. Different parameters were considered again, such as the friction, lubrication, material, and rotational speed, in order to make different research comparisons. The analytical results agreed with those in the literature, both for the static analysis and CEL analysis—for example, it was shown that changing the material from steel to ductile iron improved the gear noise, while increasing the rotational speed or the friction increased the acoustic emissions. Regarding the CEL analysis, air was considered a perfect gas, but its viscosity or another state equation could have also been taken into account. Therefore, the above allowed us to state that research into these scientific fields will bring about reliable results.

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Section: Resultsmentioning

confidence: 99%

Noise Reduction in Spur Gear Systems

Liguori

Armentani

Bertocco

et al. 2020

Entropy

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“…The limit of this approach, which operates by means of discretization, is a considerable amount of calculations; the greater they are, the greater the discretization is. The sensitivity analysis aims to identify the contributions given by various parameters that characterize the structure in terms of strength and weight, providing design indications capable to obtain less generous, but more accurate sizing, which is better suited to stress problems detected by the tank container examined [37][38][39].…”

Section: Discussionmentioning

confidence: 99%

Study of Tank Containers for Foodstuffs

et al. 2021

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In this study, we examined a tank container for foodstuff that is generally used for the transport of foodstuffs. With the aid of the “ANSYS R17.0” program code, a numerical model of the tank container for foodstuffs was realized. Further, to validate the considered model, the tank container considered was submitted to the most important ISO tests concerning both its support frame and the tank. The results obtained from the FEM analysis, in terms of displacement for each test, were compared with those provided by the manufacturer and related to the tank container considered, evaluating the difference between the numerical results with the experimental ones. This allowed us to validate the model examined. Furthermore, the results obtained from each test, in terms of stress, have made it possible to locate the areas with the highest equivalent stress and quantify the maximum value, comparing it with the allowable stress. In this way, a better understanding of the structure was achieved, and it was detected that the most stressed area is that of the connections between the container and the frame. Furthermore, modal analysis was carried out, in which the natural frequencies relating to the most dangerous modes of vibrations were found, that is, with the lowest frequency values. Finally, changes for the considered tank container were examined, and it was found that, by changing parameters, such as the thickness of the plate and skirt, and subsequently acting on the arrangement of the corner supports, the highest value of the stresses generated by the loads related to the ISO tests, it is significantly lowered, resulting in a better distributed stiffening of the structure and a reduction, although minimal, of weight. It is evident that this modeling and validation method, suitably integrated by further calculation modules, can be used in an iterative optimization process.

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