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SMAT2008V35THE INFLUENCE OF THE VEHICLE’S TYPE AND OF THEEXPLOITING CONDITIONS UPON THE RELIABILITY OF THESTEERING GEARAuthor: PhD student Eng. Horia Marcel SOTOCOvidiu Vasile CampianAbstract: The paper analyses the influence of the vehicle’s type and that of the exploiting conditions upon thereliability of the steering gear. In this certain sense it has developed a theoretical study proper through the description ofthe main causes that produce the degradation processes in the system’s components. With the help of reliabilityindicators, the experimental research has established the importance of respecting the technologic discipline during theproduction process and the necessity of modernizing the roads, in order to eliminate extreme solicitation from thesteering gear’s elements.Keywords: influence, reliability, steering gear, utility car, lorry, quantitative and qualitative indicators,operational time.Ovidiu Vasile CAMPIAN, prof.dr.ing., Transilvania University of Brasov, Faculty ofMechanical Engineering, E-mail:.c.ovidiu@unitbv.roSMAT2008V36HYDROPLANING PHENOMENON’S EQUATIONSAT WHEEL TYRES HAVING THE ROLLER TRACKFROM CONTINUOUS LONGITUDINAL TAPESMarinică STAN, Vasile HARA, Dinel POPAAbstract: In this paper is presented a study for the envelope’s properties settlement regarding the phenomenon ofhydroplaning. The phenomenon of hydroplaning is calculable with the motional equations of the viscid fluid in laminarregime for thin layers of fluid sub missed to crush. The determination of the calculus formula of the hydroplaning’scritical velocity offers the possibility to compare the envelopes from this phenomenon’s viewpoint, and through theintroduction of the watery feather’s evolution function from under the envelope at running on wet path is offered thepossibility to express the adherence’s diminution to bearer of the envelope depending on the wheel’s running speed.Keywords: envelope, hydroplaning, velocity, roller track, longitudinal tapes.Marinică STAN, Prof. PhD. Eng., University of Piteşti, Applied Mechanics Department, e-mailstan_mrn@yahoo.com, 0248/217736.Vasile HARA, Prof. PhD. Eng., University of Piteşti, Applied Mechanics Department, e-mailhara_v@yahoo.com, 0248/217736.Dinel POPA, Prof. PhD. Eng., University of Piteşti, Applied Mechanics Department, e-maildinel_popa@yahoo.com, 0248/21773622
SMAT2008V37COUPLED MULTIBODY – FINITE ELEMENT MODEL FOR THESTUDY OF AN OFF ROAD VEHICLE FRAMEStefan TABACU 1 , Nicolae PANDREA 2 , Nicolae-Doru STĂNESCU 2 , Ion TABACU 1Abstract: The paper presents computational methods applied to the study of an off road vehicle frame. The structureis firstly analyzed using finite element method. Internal energy consumed by the plastic hinges is determined and thenthe reaction torque and joint stiffness are computed. A multibody model is also developed and analyzed. The equationof motion and solving method are detailed and then applied for the structure model. Joint – plastic hinges data areexchanged between the numerical models and the results are compared. Optimization procedures can be defined forstructural crashworthiness improvement.Keywords: Vehicle frame, numerical models, finite element method, multibody method, numerical solution, plastichinge characterization.Ştefan TABACU, Assoc.Prof.Dr.Eng., University of Pitesti, Faculty of Mechanics andTechnology, Automotive Department, 1 Targu din Vale str., Pitesti, 110070, Arges, ROMANIA,email: stefan.tabacu@upit.ro;Nicolae PANDREA, Prof.Dr.Eng., University of Pitesti, Faculty of Mechanics and Technology,Applied Mechanics Department, 1 Targu din Vale str., Pitesti, 110070, Arges, ROMANIA;Nicolae Doru STĂNESCU, Assoc.Prof.Dr.Eng., University of Pitesti, Faculty of Mechanics andTechnology, Applied Mechanics Department, 1 Targu din Vale str., Pitesti, 110070, Arges,ROMANIA;Ion TABACU, Prof.Dr.Eng., University of Pitesti, Faculty of Mechanics and Technology,Automotive Department, 1 Targu din Vale str., Pitesti, 110070, Arges, ROMANIASMAT2008V38DIMENSIONING OF THE HYDROSTATIC TRANSMISSION WITHPRIMARY ADJUSTMENT FOR A ROAD VEHICLEStelian TARULESCU, Victor BENCHE, Radu TARULESCUAbstract: The Diesel engines operating characteristics being less adjustable, is necessary a hydrauliccoupling transformer that puts in concord the relative rigid momentum of the engine with the great variationsof the useful momentum. The authors offer a graphic-analytical research for the motor vehicle hydrostatictransmission agreement with the driving engine characteristics. The method used of the authors offers a goodagreement of the calculus results with the known experimental data. Their precision is priority determined byplotting the dependence of the engine, hydraulic coupling transformer and motor vehicle efficiency on theconstructive characteristics.Keywords: engine, Diesel, hydrostatic, transmision.Stelian Tarulescu, Assist.eng., Automotive and Engines Department, Transilvania University ofBrasov, s.tarulescu@unitbv.ro.Victor Benche, Prof.dr.eng., Thermodynamics and Fluid Mechanics Department, TransilvaniaUniversity of Brasov;Radu Tarulescu, Assist.eng., Thermodynamics and Fluid Mechanics Department, TransilvaniaUniversity of Brasov, radu.tarulescu@unitbv.ro;23
Page 7 and 8: SMAT2008V14AUTOMOTIVE DEPORTANTE WI
Page 9 and 10: SMAT2008V18ROAD DYNAMIC EXPERIMENTA
Page 11 and 12: SMAT2008V22STUDY CONCERNING FRACTIO
Page 13 and 14: Consideration on the distribution o
Page 15 and 16: SMAT2008V30THE MODAL POWER ASPECTS
Page 17: SMAT2008V33THE OPTIMIZATION OF THE
Page 21 and 22: SMAT2008V41THE VALIDATION BY EXPERI
Page 23 and 24: SMAT2008V45GENERAL ALGORITHM FOR DE
Page 25 and 26: 29SMAT2008V48DEVELOPMENT OF INFORMA
Page 27 and 28: SMAT2008 V52THE ACTUAL STATE OF DEV
Page 29 and 30: SMAT2008V57COMPARATIVE PRACTICAL ST
Page 31 and 32: SMAT2008T01INVESTIGATIONS CONCERNIN
Page 33 and 34: SMAT2008T05NO-TILL RESEARCH RESULTS
Page 35 and 36: SMAT2008T10THE FINIT ELEMENT METHOD
Page 37 and 38: SMAT2008E03THE INFLUENCE OF BIODIES
Page 39 and 40: SMAT2008E06FUNCTIONING CONDITIONS O
Page 41 and 42: SMAT2008E09EXPERIMENTAL RESULTS CON
Page 43 and 44: SMAT2008E11THE MATHEMATICAL SIMULAT
Page 45 and 46: SMAT2008E15THE LPG USE IN DIESEL EN
Page 47 and 48: SMAT2008E20EXAUST EMISSIONS OF DIFF
Page 49 and 50: SMAT2008E24VVA FOR A SPARK IGNITION
Page 51 and 52: SMAT2008E27ESTIMATION BY CALCULATIO
Page 53 and 54: SMAT2008M04INFLUENCE OF THE PARTICL
Page 55 and 56: STUDY ON VEGETAL OILS CHARACTERISTI
Page 57 and 58: SMAT2008M13NITINOL: PROPERTIES AND
Page 59 and 60: SMAT2008M17EFFECTS OF QUENCING AND
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Page 63 and 64: SMAT2008M25ABOUT OF THE INFLUENCE O
Page 65 and 66: SMAT2008M29ERROR ON THE GEOMETRICAL
Page 67 and 68: SMAT2008M33STANDPOINTS REGARDING DE
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SMAT2008M37EFFECT OF STIFFNESS UNCE
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SMAT2008M41STEADY-HAND MANIPULATOR
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SMAT2008R03URBAN AREAS CHEMICAL POL
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SMAT2008R07RESEARCH REGARDING THE V
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SMAT2008R11ANALYSIS REGARDING THE P
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SMAT2008R15VEHICLE DYNAMIC BEHAVIOU
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SMAT2008R18STUDY REGARDING THE ROAD
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SMAT2008R20INFLUENCE OF THE HUMAN E
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SMAT2008R24RESEARCH CONCERNING DETE
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