Research ArticleOpen accessIn the keywordsThe Study of the Dynamics of a Basic DoF RobotRelly Victoria Virgil PetrescuThe paper presents the study of the dynamics of a general DoF robot, highlighting some important new aspects in the dynamic design of a certain DoF robot. An improved method of positioning the robot in inverse kinematics is presented, then some new aspects in approaching the forces acting on a robot, but also regarding the determination of loads of the … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 4 · 16 Dec 2022 · 5,338 accessesView PDFCite
Research ArticleOpen accessIn the keywordsKinetostatics of a 2T9R Robot MechanismFlorian Ion Tiberiu Petrescu, Adriana ComanescuThe paper presents in detail a method of calculating the forces acting on a 2T9R type robot. In order to determine the reactions (forces in the kinematic couples), one must first determine the inertial forces in the mechanism to which one or more useful loads of the robot can be added. The torsor of the inertia forces is calculated with … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 12 Feb 2022 · 6,903 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPresentation of a Mechanism with a Maltese Cross (Geneva Driver)Florian Ion Tiberiu Petrescu, Taher M. Abu-Lebdeh, Antonio ApicellaThe paper presents briefly a mechanism with a cross of Malta. The mechanisms with a Maltese cross (Geneva driver) are present in automation, robotics, mechanical transmissions, continuous variable transmissions, old clocks, especially when it comes to transmitting forces and high moments, being used instead of or with the gears. The geometry of the mechanism consisting of two elements, the kinematics … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 26 May 2018 · 8,549 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPresentation of the Mechanism in the CrossFlorian Ion Tiberiu Petrescu, Taher M. Abu-Lebdeh, Antonio ApicellaThe cross-machine has frequent uses in mechanical assemblies, automation, robotics and mechanisms with various uses. In the present paper we want to present this type of mechanism with its main, geometric, cinematic, strengths and propose its study in its possible use as an internal combustion engine. In this novelty, the mechanism will have two types of operation, one when operated … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 26 May 2018 · 8,064 accessesView PDFCite
Research ArticleOpen accessIn the keywordsStudy of an Oscillating Sliding MechanismFlorian Ion Tiberiu Petrescu, Taher M. Abu-Lebdeh, Antonio ApicellaA mechanism with an oscillating slider is a mechanism quite often used in the technique. It has some advantages over other similar mechanisms being able to work with accelerations and reduced forces under the same conditions with another similar mechanism. For example, an internal combustion engine could be built more efficiently with this mechanism, resulting in a motor that would … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 26 May 2018 · 8,005 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Dynamics of the Otto EngineRelly Victoria Virgil Petrescu, Raffaella Aversa, Taher M. Abu-Lebdeh et al.The dynamic calculation of a certain mechanism and of the piston crankshaft mechanism, used as the main mechanism for Otto internal combustion engines, also implies the influence of external forces on the actual, dynamic kinematics of the mechanism. Take into account the strong and inertial engine forces. Sometimes weight forces can also be taken into account, but their influence is … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 20 Feb 2018 · 7,526 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGears-Part IIRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents an original method for the determination of the yield of the gearbox, gears forces, gearbox and power. It analyzes the influence of certain parameters which affects the efficiency of the gearbox. Also an original method for the determination of the yield of the drive shafts oriented on the basis of the ratio of contact is presented the … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 10 May 2017 · 7,340 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGears-Part IRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.The gears are today the most widespread and most frequently used mechanical transmissions, all over the world. They must be the factory on an industrial scale, everywhere and have a variety of uses, being extremely important for both the heavy machines of industrial buildings, as well as for domestic appliances, electronics, etc. meet the excessive size normal, big or even … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 10 May 2017 · 8,202 accessesView PDFCite
Research ArticleOpen accessIn the keywordsYield at Thermal Engines Internal CombustionRelly Victoria V. Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents an algorithm to set the parameters of the dynamics of the classic mechanism the main of internal combustion. It shows the distribution of the forces (on the main mechanism of the engine) on engines with internal combustion. With these strong points and together with speeds of kinematic couplings shall be determined when the output of the engine … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 20 Mar 2017 · 7,970 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSomething about the Balancing of Thermal MotorsRaffaella Aversa, Relly Victoria V. Petrescu, Bilal Akash et al.Internal combustion engines in line (regardless of whether the work in four-stroke engines and two-stroke engines Otto cycle engines, diesel and Lenoir) are, in general, the most used. Their problem of balancing is extremely important for their operation is correct. There are two possible types of balancing: Static and dynamic balance. The total static to make sure that the sum … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 15 Mar 2017 · 7,785 accessesView PDFCite