http://arthra.ugal.ro/handle/20.500.14043/24652 2026-04-12T18:48:37Z 2026-04-12T18:48:37Z Burciu, Mugurel http://arthra.ugal.ro/handle/20.500.14043/24670 2020-09-03T13:27:39Z 2013-01-01T00:00:00Z

Modeling the Dynamic Behavior of the Supercharger Units of Supercharged Diesel Engines Burciu, Mugurel The paper preseflts the sintulation of the dynamic behavior of the supe.rcharger group with free rotatiott, using diJfere,tial equatiotts. The model is based on working knowledge of static characteiistics of the supercharge group. Transfer functions, that are used for achieving and adjusting automatic regulators, which control the operition of the system under consideration, are determinated. The Annals of ''Dunarea de Jos'' University of Galati : Fascicle XIV : MECHANICAL ENGINEERING, ISSN 1224 - 5615

2013-01-01T00:00:00Z Picu, Mihaela http://arthra.ugal.ro/handle/20.500.14043/24669 2020-09-03T13:27:39Z 2013-05-01T00:00:00Z

An Analysis of Vibration Transmission to Handlers Trucks Picu, Mihaela During movement of vehicles, drivers are subjected to vibrations transmitted by the engine, road irregularities, etc. They are extremely harmful for drivers and passengers. In this paper were studied and measured the vibrations accelerations transmitted by the vehicle when: the driver sits directly on the car seat and the driver sits on ergonomic seat cushion, in two cases: driving on asphalt and on macadam. The accelerometers were fixed on the floor, on the seat, on the lumbar area, on the cervical area and on the forehead, at eight male subjects of different BMI and ages. For these cases, were calculated the root mean square average vibration, the vibration dose value, the time period needed to reach the value of the exposure which triggers the action and the limit exposure value and the seat effective amplitude transmissibility for Aw and VDV. It was found that in all cases, seat cushion decreased the transmission of vibration, so the travelling conditions are improved. In these cases, the following results were obtained: If the driving occurs on asphalt, the root mean square average vibration measured at the forehead decreased by 9.09% and on macadam, the decrease was of 8%. VDV decreased by 20.69% on asphalt and on macadam, the decrease was of 14.81%. TEAV increased by 21% on asphalt and on macadam, the increase was of 18.12%. TELV increased by 21.05% on asphalt and on macadam, the increase was of 18.20%.

2013-05-01T00:00:00Z Peicu, Adrian Dumitrache, Mihai Dumitrache, Ionuț http://arthra.ugal.ro/handle/20.500.14043/24668 2020-09-03T13:27:39Z 2013-05-01T00:00:00Z

Considerations Regarding Parameters Dependencies of Reinforced Concrete Share Equipment Types for Buildings Demolition Peicu, Adrian; Dumitrache, Mihai; Dumitrache, Ionuț The models of demolishing jaws and pulverizers that are already on the market give us the necessary information for the development of a research program regarding the optimum choice of the necessary machinery in demolishing projects, the evaluation of expenses and the dimensioning of the communication ways used for the chosen machinery. The result of this analysis, using the technical documentation supplied by the machinery producers, can be used as a guide in designing this kind of machinery and as a verifying tool in predimensioning the equipment.

2013-05-01T00:00:00Z Pană, Daniela http://arthra.ugal.ro/handle/20.500.14043/24667 2020-09-03T13:27:39Z 2013-05-01T00:00:00Z

Acoustic and Parametric Studies of the Experimental Radial Sonic Generator Pană, Daniela In this paper the parameters of the acoustic field were studied experimentally,along with the frequency produced by the generator and the circular diagram of the generator’s acoustic emission, the influence of the nozzle’s slot size and the operating pressure of the generator (supply air pressure) on the parameters of the acoustic field produced by the generator .

2013-05-01T00:00:00Z