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SMAT2008V16ANALYTICAL RESEARCH OF MECHANICAL STRESSES IN A TRUCKSTRENGTH STRUCTUREDan Ilincioiu, Catalina Ianasi, Claudiu AnghelAbstract: The strength structure of a transportation power-driven vehicle is a bars system that buildsupa complex frame, space loaded. Due to the multiple constraints and to the closed geometricalcontours, the mechanical system is not only exterior but also interior redundant. In order to evaluate thevalue of mechanical stresses by analytical calculation, the indeterminedness must be solved. In this paperthe mechanical indeterminedness calculation is made using the stresses method, only the transverse stressand the torque load will be taken into account.For a proper structure of the three axles trucks, the stresses distribution in the component bars will bedetermined. Thus, the determined calculation will make the basis of an automatic running program thatallows the deceleration of different influences of the geometrical and loading parameters over themechanical stresses. An application will be made on a particular structure using the constructiveelements of a heavy transportation power-driven vehicle. Keywords: material strength, mechanicalstrength, mechanical strength structure, truck.Ilincioiu Dan, dr.eng., univ. prof., University of Craiova, Faculty of Mechanics, AppliedMechanics Department, danilin@mecanica.ucv.ro, 0723038606.SMAT2008V17SOME DYNAMIC ASPECTS OF NEMO, TRIO AND MIXTRA - THREEPROTHOTYPES CREATED BY AUTOMOTIVE SPECIALISTS OFOVIDIUS UNIVERSITY OF CONSTANTAAdriana-Teodora MANEA, Laurentiu –Claudiu MANEA, Gheorghe BOBESCU, GeorgeTOGĂNEL, Daniel TRUŞCĂAbstract: The paper presents the dynamic behavior of three different prototypes realized as a teamwork together with students of Automotive section and specialists from other Universities. Theexperiments confirm the real dynamic behavior and the theoretical calculus thanks to the signalsprocessed via some modern devices mounted in the cabs during experimental tests. A new polygon ofexperimental dynamic test was made in Constanta together with students. Keywords: Dynamic roadtests, prototypes.Adriana-Teodora MANEA, Laurentiu –Claudiu MANEA professors Mechanical EngineeringFaculty „Ovidius” University Constanta, profmanea@yahoo.comGheorghe-BOBESCU- professor, George TOGĂNEL, Daniel TRUŞCĂ-assistants atMechanical Engineering Faculty „Transilvania” University Brasov12