Time-Marching Method for Computations of High-Speed Compressible Flow on Structured and Unstructured Grid

Ng, Khai Ching; Yusoff, Mohd Zamri; Munisamy, Kannan M.; Hasini, Hasril; Shuaib, N. H.

doi:10.3844/ajeassp.2008.89.94

Cited by 10 publications

(6 citation statements)

References 20 publications

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“…Longitudinal axis of the tube Diametrically central axis Mavukkandy et al, 2016;Yeargin et al, 2016;Madani and Dababneh, 2016;Alhasanat et al, 2016;Elliott et al, 2016;Suarez et al, 2016;Kuli et al, 2016;Waters et al, 2016;Montgomery et al, 2016;Lamarre et al, 2016;Daud et al, 2008;Taher et al, 2008;Zulkifli et al, 2008;Pourmahmoud, 2008;Pannirselvam et al, 2008;Ng et al, 2008;El-Tous, 2008;Akhesmeh et al, 2008;Nachiengtai et al, 2008;Moezi et al, 2008;Boucetta, 2008;Darabi et al, 2008;Semin and Bakar, 2008;Al-Abbas, 2009;Abu-Ein, 2009;Opafunso et al, 2009;Semin et al, 2009a;2009b;2009c;Zulkifli et al, 2009;Marzuki et al, 2015;Bier and Mostafavi, 2015;Momta et al, 2015;Farokhi and Gordini, 2015;Khalifa et al, 2015;Yang and Lin, 2015;Chang et al, 2015;Demetriou et al, 2015;Rajupillai et al, 2015;Sylvester et al, 2015;Ab-Rahman et al, 2009;…”

Section: Discussionmentioning

confidence: 99%

Machine Motion Equations Presented in a New General Format

Petrescu

2019

Journal of Mechatronics and Robotics

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Considering 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 a motor, a compressor, a lucrative machine, a robot, a system, a mechanism, a vehicle, a mechanical transmission, or any other type of car. The dynamics of systems is their real movement, the dynamic movement, in which the influences of three main factors interfere, which modify the kinematics of the mechanism when it moves really, dynamic. The first dynamic factor is the forces of inertia or the effect of inertial masses. The second important dynamic factor is that of the couplings, of the linkages within the respective machine mechanisms. The latter and the third dynamic factor represents the influence of system elasticity on its dynamic functioning. Only dynamic coefficient of inertia and the influence of kinematic couplings in the system were used in the analyzed sample. The dynamic coefficient due to elasticity and deformation in the system has not been taken into account since the overwhelming influence of the inertial forces is impacted by additional dynamic changes and also by the kinematic couplings in the system and the elastic deformations do not greatly influence the dynamics of the system in the case of the example remembered. If a robot was being discussed, things were similar, as in the case of various vehicles and various mechanisms and machines. However, for rigid memory transmissions, elastic deformations are important, which is why they should be considered in such systems.

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Section: Discussionmentioning

confidence: 99%

Machine Motion Equations Presented in a New General Format

Petrescu

2019

Journal of Mechatronics and Robotics

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“…In this way, the power supply, power, and communication cables can be easily insulated. This improves the ability of robotic systems to work in a clean or aseptic environment (Antonescu & Petrescu, 1985;1989;Antonescu et al, 1985a;1985b;1986;1987;1988;1994;1997;2000a;2001;Atefi et al, 2008;Avaei et al, 2008;Aversa et al, 2017a;2016d;2016e;2016f;2016g;2016h;2016i;2016j;2016k;2016l;2016m;2016n;2016o;Azaga & Othman, 2008;Cao et al, 2013;Dong et al, 2013;El-Tous, 2008;Comanescu, 2010;Franklin, 1930;He et al, 2013;Jolgaf et al, 2008;Kannappan et al, 2008;Lee, 2013;Lin et al, 2013;Liu et al, 2013;Mirsayar et al, 2017;Ng et al, 2008;Padula, Perdereau & Pannirselvam, 2008;2013;Perumaal & Jawahar, 2013;Petrescu, 2011;…”

Section: Independent Journal Of Management and Production (Ijmandp)mentioning

confidence: 99%

Inverse modeling of the stewart foot

Comanescu¹,

Rotaru²,

Ungureanu³

et al. 2021

Ind. Jour. Manag. & Prod.

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The Stewart's leg is used today in the majority of parallel robotic systems, such as the Stewart platform, but also in many other types of mechanisms and kinematic chains, in order to operate them or to transmit motion. A special character in the study of robots is the study of inverse kinematics, with the help of which the map of the motor kinematic parameters necessary to obtain the trajectories imposed on the effector can be made. For this reason, in the proposed mechanism, we will present reverse kinematic modeling in this paper. The kinematic output parameters, ie the parameters of the foot and practically of the end effector, ie those of the point marked with T, will be determined for initiating the working algorithm with the help of logical functions, "If log(ical)", with the observation that here they play the role of input parameters; it is positioned as already specified in the inverse kinematics when the output is considered as input and the input as output. The logical functions used, as well as the entire calculation program used, were written in Math Cad.

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“…This results in a "forced" drive balancing from the transmission, which makes the operation of the assembly to be correct but rigid and with mechanical shocks. Such balancing is not possible when the actuators directly actuate the elements of the kinematic chain without using mechanical reducers PETRESCU, 1985;1989;ANTONESCU et al, 1985a;1985b;1986;1987;1988;1994;1997;2001;ATEFI et al, 2008;Avaei et al, 2008;AVERSA et al, 2017a;2016d;2016e;2016f;2016g;2016h;2016i;2016j;2016k;2016l;2016m;2016n;2016o;AZAGA;OTHMAN, 2008;CAO et al, 2013;DONG et al, 2013;EL-TOUS, 2008;COMANESCU, 2010;FRANKLIN, 1930;HE et al, 2013;JOLGAF et al, 2008;KANNAPPAN et al, 2008;LEE, 2013;LIN et al, 2013;LIU et al, 2013;MIRSAYAR et al, 2017;NG et al, 2008;PADULA;PERDEREAU;PANNIRSELVAM, 2008;2013;…”

Section: Independent Journal Of Management and Production (Ijmandp)mentioning

confidence: 99%

Structural-topological synthesis of space mechanisms with rods and wheels

Petrescu¹,

Petrescu²

2019

Ind. Jour. Manag. & Prod.

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Today, robots are increasingly present in the machine building industry, sometimes even in some sections to replace workers altogether, due to the high quality of their work, repetitive, without stopping or pausing, without any manufacturing and assembly scuffs. In this paper, one presents the mechanisms with bars and gears, which are planetary mechanisms for robot automation and mechatronics, structurally-topological. The gears and bars consist of at least one movable articulated bar and one of the cylindrical, tapered or hipoidal gears. Only gears with circular or straight toothed gears, in which the relative position of the rotation or translation axes does not change, shall be considered. The topological structure of the gears and gears is characterized by a kinematic chain with articulated bars and at least one kinematic chain with gears. The kinematic chain may be chain open (with a fixed rotation joint) or closed chain (with at least two fixed joints). The kinematic chain with gears is attached to the kinematic chain with bars so that at least two gear wheels have centers in the bars of the bars and some wheels may be integral with the bars. In practice, some of these gears with gears and gears are known as planetary gears with cylindrical, conical or hipoidal gears.

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Time-Marching Method for Computations of High-Speed Compressible Flow on Structured and Unstructured Grid

Cited by 10 publications

References 20 publications

Machine Motion Equations Presented in a New General Format

Machine Motion Equations Presented in a New General Format

Inverse modeling of the stewart foot

Structural-topological synthesis of space mechanisms with rods and wheels

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