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17 articles for “Mechanical Transmissions”
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Research ArticleOpen accessIn the keywordsKinematic and Dynamic Analysis of a Classic, Three-Axis Manual Gearbox, Without a Direct SocketRelly Victoria Virgil Petrescu, Florian Ion Tiberiu PetrescuFixed axis mechanical transmissions today have the largest spread on the entire planet, being practically used in almost all areas. From the gearboxes of the vehicles to the stationary reducers, used in the electrical, electronic and electro technical equipment, in the heavy industry but also in the light industry, in energy and in transport, practically the transmissions with fixed axes … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 2 · 24 May 2020 · 7,673 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 keywordsDynamics of Mechanisms with Cams Illustrated in the Classical DistributionRelly Victoria Virgil Petrescu, Raffaella Aversa, Bilal Akash et al.The paper presents an original method to determine the general dynamics of rotating cam and lifting, customized to flat-plate mechanism. First, the dynamic cinematic is presented. Then the Lagrange equation is resolved and with an original dynamic model with a degree of freedom with variable internal damping the dynamic analysis of two models is then made. The mechanisms presented, scientifically … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 5 Jun 2017 · 8,491 accessesView PDFCite
Research ArticleOpen accessIn the keywordsContributions to the Synthesis of Fixed Axle Gears by Avoiding the Interference PhenomenonRelly Victoria Virgil PetrescuIt can be seen that the minimum number of teeth required to avoid interference for the standard pressure angle, normally on the alpha0 = 20° decomposition circle, is 13, corresponding to a transmission ratio i = 1 and increases with the transmission ratio i reaching to the maximum value of 18 teeth for i>100. For normal transmission ratios, values ranging … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 21 May 2019 · 6,488 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAn Analytical Method for Determining Forces within a TriadFlorian Ion Tiberiu Petrescu, Taher M. Abu-Lebdeh, Antonio ApicellaThe paper presents an original analytical method used in determining the forces within a triad structural group. If the triad is in the mechanical equivalent of the transistor in electronics, representing a very useful structural group, while the transistor is no longer a puzzlement from a long time period, the triad was not too studied analytically, generally being approached by … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 26 May 2018 · 7,868 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 keywordsFuture Medicine Services RoboticsRelly Victoria V. Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion T. PetrescuIt is an entry technique in use recently, albeit in selected centers and represents a further step in the field of minimally invasive surgery. Basically it has the same indications but, at present, is reserved for selected patients. Compared to traditional video-assisted surgery presents some important differences. The surgeon is physically distant from the operative field and sits at a … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 26 Nov 2016 · 8,889 accessesView PDFCite
Review ArticleOpen accessIn the abstractMechanisms With Rigid MemoryRelly Victoria Virgil PetrescuAlong with gears, distribution mechanisms are the most widely used mechanical transmissions used over the past 300 years and will continue to be the most widespread in all industrial fields but also in other technical areas. For this reason, it was considered necessary this work, which tries to add a brick to the permanent construction of rigid memory mechanisms used … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 19 Jul 2019 · 6,162 accessesView PDFCite
Research ArticleOpen accessIn the abstractMachine Motion Equations Presented in a New General FormatNicolae Petrescu, Florian Ion Tiberiu PetrescuConsidering the increased importance of robots nowadays, when no large factory or factory can work without robots, we want to present in the work the motion equations of the machine in an original form, both in terms of aspect and their deduction. The machine's motion equations can be used in dynamic calculations at any type of machine, whether it be … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 22 May 2019 · 6,131 accessesView PDFCite