http://arthra.ugal.ro/handle/20.500.14043/24623 2026-04-16T14:18:07Z 2026-04-16T14:18:07Z Șcheaua, Fănel http://arthra.ugal.ro/handle/20.500.14043/24639 2020-09-03T13:27:43Z 2014-01-01T00:00:00Z

General Working Principles for Agricultural Tractor with Ploughing Equipment Șcheaua, Fănel Agricultural machines are considered part of special mechanical equipments category intended to perform mechanized works in farmlands, in order to obtain optimal harvests. The continuous development of these equipments was mainly aimed at evolutions of specific technological processes, constant increasing of speed in operation mode and also increasing of engine power. In order to well perform the proposed technological process, they should have high resources of reliability, durability and stability in execution in spite of the external conditions in which their operation is carried out. This paper performs a constructive and functional description for agricultural tractors equipped with plowing working equipment. Also it is described the hydraulic suspension system by means of which the plowing device can be raised for transport or lowered to the working position. For instance, it was chosen the three-point articulated model for the suspension system used because it is the most widely used on the most constructive pattern of agricultural tractors. The Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERING : ISSN 1224 - 5615

2014-01-01T00:00:00Z Șcheaua, Fănel http://arthra.ugal.ro/handle/20.500.14043/24638 2020-09-03T13:27:43Z 2014-01-01T00:00:00Z

Considerations on Functional Parameters of Dry Friction Seismic Isolation Systems Șcheaua, Fănel Many types of isolation systems against ground seismic activities which can be attached to the building structures have experienced an intensive development in recent years. The studies and researches carried out on different experimental models aim to obtain continuous improvements for the isolation systems component parts so they can provide maximum efficiency in operation, and offer an improved behavior for structures to which are mounted during seismic events. This paper shows the working principle of isolation systems with dry friction depending on the main parameters involved and the linear force-displacement diagrams obtained from the case studies using different values of these design parameters. The Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERIN, ISSN 1224 - 5615

2014-01-01T00:00:00Z Săvulescu, Adrian http://arthra.ugal.ro/handle/20.500.14043/24637 2020-09-03T13:27:43Z 2014-01-01T00:00:00Z

Aspects Regarding General Cosiderations in the Study of Continuously Variable Transmission - CVT Săvulescu, Adrian This paper aims to study specific type involved in presenting Continuously Variable Transmission system components simplified principle, by studying, perfecting and seeking to obtain a smooth power curve without almost any peak, taking into account the general considerations, pressure control, analysis and considerations about belt slip motion, vibration and specificenergy The Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERING, ISSN 1224 - 5615

2014-01-01T00:00:00Z Picu, Mihaela http://arthra.ugal.ro/handle/20.500.14043/24636 2020-09-03T13:27:43Z 2014-01-01T00:00:00Z

Noise Study of a Naval Ship in Different Operating Modes on the Danube Picu, Mihaela In this paper are described the experimental measurements of noise transmitted to the staff from a naval ship during different operating modes on the Danube. This paper is focused on the technical aspects of the Directive 2003/10/EC regulations. The measurements targeted the staff’s comfort both in the engines room and on the decks. The living conditions inside the cabins and inside the common areas were also taken into account. The parallel between the limit values (Directive 2003/10/EC) and the mean value of the experimental results shows that: Limit values (2003/10/EC) for noise level (dB) Values above which adverse comments are probable 80 Values above which adverse comments are not probable 87 The Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERING, ISSN 1224 - 5615

2014-01-01T00:00:00Z