Browsing by Author "Marin, Marin"

Now showing 1 - 9 of 9

Citation - WoS: 0
Citation - Scopus: 0
Auction-based serious game for bug tracking
(Mdpi, 2019) Marin, Marin; Yılmaz, Murat; Baleanu, Dumitru; Vlase, Sorin; Yazılım Mühendisliği; Matematik
Engineering practice requires the use of structures containing identical components or parts, which are useful from several points of view: less information is needed to describe the system, design is made quicker and easier, components are made faster than a complex assembly, and finally the time to achieve the structure and the cost of manufacturing decreases. Additionally, the subsequent maintenance of the system becomes easier and cheaper. This Special Issue is dedicated to this kind of mechanical structure, describing the properties and methods of analysis of these structures. Discrete or continuous structures in static and dynamic cases are considered. Theoretical models, mathematical methods, and numerical analysis of the systems, such as the finite element method and experimental methods, are expected to be used in the research. Such applications can be used in most engineering fields including machine building, automotive, aerospace, and civil engineering.
Citation - WoS: 0
Citation - Scopus: 0
Composite Structures with Symmetry
(Mdpi, 2021) Marin, Marin; Baleanu, Dumitru; Baleanu, Dumitru; Vlase, Sorin; 56389; Matematik
In recent years, the use of composite materials in structural applications has been observed. The composites have revolutionized the field of materials and allow for interesting and new developments in different engineering branches. At the same time, in all areas of engineering, there are some products or parts of products or components that contain repetitive or identical elements. Here, different types of symmetry can occur. Such systems have been studied by various researchers in the last few decades. In civil engineering, for example, most buildings, works of art, halls, etc. have, in their structure, identical parts and symmetries. This has happened since antiquity, for different reasons. First, because of their easier, faster, and cheaper design, and second, because of their easy manufacturing and (less important for engineers, but important to the beneficiaries) for aesthetic reasons. The symmetry in the field of composite materials manifests itself in two different ways, at two levels-one due to the symmetries that appear in the composition of the composite materials and that determine the properties of the materials, and second in the structures manufactured with composites. The study of the obvious importance of the existence of symmetries in the design of composite materials or composite structures of a sandwich type, for example (but also other types), and of the existence of symmetries in structures constructed also using composite materials will be highlighted within this Special Issue. With this Issue, we want to disseminate knowledge among researchers, designers, manufacturers, and users in this exciting field.
Citation - WoS: 79
Citation - Scopus: 86
Effect of microtemperatures for micropolar thermoelastic bodies
(Techno-press, 2017) Marin, Marin; Baleanu, Dumitru; Baleanu, Dumitru; Vlase, Sorin; 56389; Matematik
In this paper we investigate the theory of micropolar thermoelastic bodies whose micro-particles possess microtemperatures. We transform the mixed initial boundary value problem into a temporally evolutionary equation on a Hilbert space and after that we prove the existence and uniqueness of the solution. We also approach the study of the continuous dependence of solution upon initial data and loads.
Citation - WoS: 0
Citation - Scopus: 0
Multibody Systems with Flexible Elements
(Mdpi, 2021) Marin, Marin; Baleanu, Dumitru; Baleanu, Dumitru; Vlase, Sorin; 56389; Matematik
Citation - WoS: 1
Citation - Scopus: 3
On a generalized relaxed Saint-Venant principle
(Springeropen, 2018) Marin, Marin; Baleanu, Dumitru; Agarwal, Ravi P.; Baleanu, Dumitru; 56389; Matematik
The goal of this paper is to obtain an extension of the relaxed Saint-Venant principle in order to cover the thermoelasticity of dipolar porous bodies. According to this principle, for a finite time t > 0, we identify a bounded domain D-t so that outside of this domain the displacement field u(i), the dipolar displacement field phi(jk), the temperature theta, and the change in volume fraction phi do not generate disturbances.
Citation - WoS: 1
Citation - Scopus: 1
On Stability in the Thermoelastostatics of Dipolar Bodies
(Springer Wien, 2018) Marin, Marin; Baleanu, Dumitru; Ochsner, Andreas; Baleanu, Dumitru; 56389; Matematik
Our study is concerned with the initial boundary value problem in the context of the thermoelastostatics of dipolar bodies. We will derive a result which describes the exponential spatial decay of solutions of this problem. We will also find a superior limit for the amplitude, which is dependent on the initial and boundary conditions.
Citation - WoS: 4
Citation - Scopus: 4
On the boundary value problem in the nonlinear theory of dipolar elastic materials
(Taylor & Francis inc, 2020) Marin, Marin; Baleanu, Dumitru; Carrera, Erasmo; Baleanu, Dumitru; 56389; Matematik
In our study, we formulate the boundary value problem in the context of the nonlinear theory of dipolar, porous, and elastic materials. For this problem, some existence and uniqueness results are proven. The results are natural generalizations of the results obtained by Langenbach for the classical elastic bodies.
Citation - WoS: 75
Citation - Scopus: 74
On vibrations in thermoelasticity without energy dissipation for micropolar bodies
(Springer international Publishing Ag, 2016) Marin, Marin; Baleanu, Dumitru; Baleanu, Dumitru; Matematik
We consider a micropolar thermoelastic body occupying a prismatic cylinder that is free of loads on lateral surface (no body force, no body couple, and no heat supply). On the base of the cylinder are prescribed a time-dependent displacement, a microrotation, and a thermal displacement, which are harmonic in time, and collaborate to induce the motion of the considered body. With the help of a measure associated with the corresponding steady-state vibration and by assuming that the exciting frequency is lower than a certain critical frequency, we will obtain a spatial decay estimate.
Symmetry in Applied Continuous Mechanics
(MDPI, 2019) Baleanu, Dumitru; Baleanu, Dumitru; Vlase, Sorin; 234808; Matematik
Engineering practice requires the use of structures containing identical components or parts, which are useful from several points of view: less information is needed to describe the system, design is made quicker and easier, components are made faster than a complex assembly, and finally the time to achieve the structure and the cost of manufacturing decreases. Additionally, the subsequent maintenance of the system becomes easier and cheaper. This Special Issue is dedicated to this kind of mechanical structure, describing the properties and methods of analysis of these structures. Discrete or continuous structures in static and dynamic cases are considered. Theoretical models, mathematical methods, and numerical analysis of the systems, such as the finite element method and experimental methods, are expected to be used in the research. Such applications can be used in most engineering fields including machine building, automotive, aerospace, and civil engineering.