Journal name has been changed
2022-02-14
Journal of Mechanical Engineering Research has been renamed Journal of Mechanical Materials and Mechanics Research, from Volume 5 (2022).
Vol. 4 , Iss. 2 (September 2021)
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Articles
Geometrical Dimensional Effect on Natural Frequency of Single Layer Graphene in Armchair Configuration
45-51
Article ID: 3831 DOI：https://doi.org/10.30564/jmer.v4i2.3831
291 (Abstract)
124 (Download)
Abstract:
Graphene has remarkable strength, such as yield strength and elasticconstant. The dynamic behaviour of graphene sheet is affected bygeometrical variation in atomic arrangement. This paper introducedgraphene with armchair atomic structure for estimating fundamental naturalfrequencies. The presented analysis can be useful for the possible highfrequency nanomechanical resonator systems. The analytical formulation,based on classical plate theory and... MoreArticlesUse of the Method of Guidance by a Required Velocity in Control of Spacecraft Attitude
32-44
Article ID: 3725 DOI：https://doi.org/10.30564/jmer.v4i2.3725
258 (Abstract)
118 (Download)
Abstract: We apply the method of guidance by a required velocity for solving the optimal control problem over spacecraft’s reorientation from known initial attitude into a required final attitude. We suppose that attitude control is carried out by impulse jet engines. For optimization of fuel consumption, the controlling moments are calculated and formed according to the... More
ArticlesRecognition Methods of Geometrical Images of Automata Models of Systems in Control Problem
21-31
Article ID: 3588 DOI：https://doi.org/10.30564/jmer.v4i2.3588
313 (Abstract)
133 (Download)
Abstract:
The laws of functioning of discrete deterministic dynamical systems are investigated, presented in the form of automata models defined by geometric images. Due to the use of the apparatus of geometric images of automata, developed by V.A. Tverdokhlebov, the analysis of automata models is carried out on the basis of the analysis of mathematical... More
ArticlesAnalysis of Autogenous Laser Welding in Low Carbon and Large Thickness Steel
1-10
Article ID: 3381 DOI：https://doi.org/10.30564/jmer.v4i2.3381
429 (Abstract)
174 (Download)
Abstract:
With the use of laser welding, it is possible to join different steel, with different thicknesses, with or without the action of protective layers. The quality of laser radiation makes it possible to get certain characteristics that are impossible to get by other processes, such as high welding speeds, less metallurgical effects suffered by the... More
ArticlesConception the Fluid Flow Behavior within Oil Reservoir Rock by Using Computed Tomography (CT) Scan
11-20
Article ID: 3194 DOI：https://doi.org/10.30564/jmer.v4i2.3194
323 (Abstract)
138 (Download)
Abstract:
The behavior of fluid flow has been studied during the different flow media over the past decades. In addition, the behavior of the flow of fluid through porous media has garnered much research interest. This paper sheds light on fissured rocks of oil reservoir media (as one of the porous media domain), and the effect... More