Relevant bibliographies by topics / Inertia-rigidity parameters / Journal articles
To see the other types of publications on this topic, follow the link: Inertia-rigidity parameters.

Journal articles on the topic 'Inertia-rigidity parameters'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 44 journal articles for your research on the topic 'Inertia-rigidity parameters.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

He, Guang Lin, and He Fei Tian. "Analysis of Dynamic Behavior of Zigzag Groove Setback Arming Device with Two Degree of Freedom." Advanced Materials Research 317-319 (August 2011): 1739–44. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.1739.

Full text
Abstract:
Focusing on the requirements of safety and reliability of fuze setback arming device of rocket-assisted projectile, a zigzag groove setback device with two degree of freedom was designed with Inventor 6. The dynamic simulation is developed under environment of VisualNastran. The optimum parameters of up inertia-cylinder mass, down inertia-cylinder mass, up inertia-spring rigidity and down inertia-spring rigidity were tested by orthogonal method and simulated. The results indicate that this setback device can effectively differentiate setback overload in launch and impact overload at service ha
APA, Harvard, Vancouver, ISO, and other styles
2

Guo, Xiao Yan. "Calculation of Different Stages Reinforced Concrete Beam Bending Stiffness." Applied Mechanics and Materials 166-169 (May 2012): 3100–3105. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.3100.

Full text
Abstract:
By means of inertia-moment method, formulae are derived for calculating flexural rigidity of RC beams under different loading stage, which can be used for calculating initial rigidity and rigidity in service stage. Involving less parameters, it’s convenient to use the formulae. As for four examples, calculations are carried out by both code method and formulations given in this paper, and satisfied results are shown. Further more, based on finite rib method, nonlinear-all-rang analysis is done for M-B of beam sections.
APA, Harvard, Vancouver, ISO, and other styles
3

Kuropiatnyk, Olek S., and M. Y. Sharapov. "Substantiation of Geometric Parameters of a Variable Inertia Moment Pulley." Science and Transport Progress, no. 2(102) (June 27, 2023): 96–103. http://dx.doi.org/10.15802/stp2023/290252.

Full text
Abstract:
Purpose. The main purpose of our work is to substantiate the geometric parameters of a variable moment of inertia pulley, which can reduce the weight of a drive with such a pulley. Methodology. It was found that the masses of the pulley and support elements have the greatest influence on the weight of the drive, so we focused on the pulley. Improvement of the pulley design and determination of its rational geometric parameters were carried out in three stages. At the first stage, the size of the rim was reduced in accordance with the diameter of the rope. At the second stage, a multivariate ca
APA, Harvard, Vancouver, ISO, and other styles
4

Bolshakov, Roman Sergeevich, Andrey Pavlovich Khomenko, and Sergey Victorovich Eliseev. "New approaches of condition estimation of freight railway carriages at motion on sorting devices on base system analysis and mathematical modeling." Transport of the Urals, no. 4 (2021): 24–32. http://dx.doi.org/10.20291/1815-9400-2021-4-24-32.

Full text
Abstract:
The paper develops methods of system analysis and technologies for control dynamic conditions of technical means of railway transport. Methods of structural mathematical modeling are used, within the framework of which the design scheme of the object, considered as a mechanical oscillatory system with several degrees of freedom, is interpreted as a dynamically equivalent automatic control system. The problems of the dynamics of the coupling of two freight railway carriages with two variants of its rigidity (conventional and rigid hinge-type fastening) are considered. It is shown that with a ce
APA, Harvard, Vancouver, ISO, and other styles
5

Varfolomeev, Yuriy, Sergii Levkivskyi, and Valentyn Moroz. "PLANETARY GEARS DYNAMIC MODEL OF ROAD MACHINE DRIVES FOR CALCULATING FORCED VIBRATIONS." Automobile Roads and Road Construction, no. 114.1 (2023): 151–59. http://dx.doi.org/10.33744/0365-8171-2023-114.1-151-159.

Full text
Abstract:
The paper proposes an experimental technique for finding the uneven distribution of torque between the gears of a planetary gear and, at the same time, the distribution of the load along the tooth based on five load sensors on the shaft of each planetary gear. The object of study is the rigidity and inertial parameters of the planetary gear elements. The purpose of the study is to create a dynamic model of a planetary gear to calculate forced vibrations caused by time-varying gaps - tensions arising in gears. The paper provides an analysis of the problem for the developed model and factors tha
APA, Harvard, Vancouver, ISO, and other styles
6

Vasilevskaya, Svetlana. "Consideration of hydraulic limitations in setting the mode parameters of combined piercing the holes." MATEC Web of Conferences 298 (2019): 00141. http://dx.doi.org/10.1051/matecconf/201929800141.

Full text
Abstract:
The paper considers the hydrodynamic limitations in the combined machining, caused by the non-rigidity of the tubular cathode-tool. It is shown that increasing the inertia moment of the cathode-tool cross section is possible only in decreasing the diameter of the hole for pumping the electrolyte. It should be noted that reducing the diameter of the hole increases the hydrodynamic losses of the electrolyte flow in the hydraulic path and, as a result, leads to a significant reduction in the range of the mode regimes. Thus, to implement the combined piercing of deep holes of small diameter, it is
APA, Harvard, Vancouver, ISO, and other styles
7

Fedor, Abramchuk, Grytsyuk Oleksandr, Prokhorenko Andrei, and Reveliuk Ivan. "SPECIFYING THE PROCEDURE FOR DESIGNING THE ELEMENTS OF THE CRANKSHAFT SYSTEM FOR A SMALL HIGH-SPEED DIESEL ENGINE." Eastern-European Journal of Enterprise Technologies 3, no. 1 (93) (2019): 60–66. https://doi.org/10.15587/1729-4061.2018.133353.

Full text
Abstract:
Development of the model range of high-speed inline small diesels by designing a six-cylinder version based on the already adjusted four-cylinder one, entails a decrease in the rigidity of the crankshaft. This in turn reduces its reliability due to the enhanced impact of torsional vibrations. To assess this impact, we performed a series of calculations for determining the amplitudes and tangential stresses in the crankshaft system. In order to reduce maximum values of angular amplitudes and tangential stresses, the most expedient is to use a silicone damper for absorbing the torsional vibratio
APA, Harvard, Vancouver, ISO, and other styles
8

Liew, K. M., Y. Xiang, S. Kitipornchai, and M. K. Lim. "Vibration of Rectangular Mindlin Plates with Intermediate Stiffeners." Journal of Vibration and Acoustics 116, no. 4 (1994): 529–35. http://dx.doi.org/10.1115/1.2930459.

Full text
Abstract:
A first known investigation into the vibratory characteristics of rectangular Mindlin plates with intermediate stiffeners is presented. The Rayleigh-Ritz method is used, with displacement and rotational functions assumed in the form of mathematically complete algebraic polynomials. Sets of numerical frequency parameters for rectangular plates of various boundary conditions, thicknesses and plate dimensions are presented. In the study, the effects of shear deformation and rotary inertia on the vibrational response of the plate structures are investigated. The influence of torsional rigidity and
APA, Harvard, Vancouver, ISO, and other styles
9

Liu, Baodong, Zongmin Liu, Miaoxin Zhang, and Quanlu Wang. "Study on Impact Parameters of Rigidity and Flexibility for Buried Corrugated Steel Culvert." Open Civil Engineering Journal 8, no. 1 (2014): 14–22. http://dx.doi.org/10.2174/1874149501408010014.

Full text
Abstract:
Buried corrugated steel culverts are universally regarded as a structure with strong deformation adaptability and dispersed the upper load by corrugated steel structures surrounding soil constraints to enhance the carrying capacity and the use of soil-structure interaction. A lot of factors influence the earth pressure of the buried corrugated steel culvert, such as culvert stiffness, physical characteristics of the backfill (bulk density, deformation modulus and internal friction angle), geometry of structure and backfilling height. The finite element program of ANSYS has been used to researc
APA, Harvard, Vancouver, ISO, and other styles
10

Zhao, Liang, Meng Su, and Yun Chen Miao. "High Accuracy Analysis of SCARA Industrial Robot Based on Screw Theory." Applied Mechanics and Materials 130-134 (October 2011): 249–55. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.249.

Full text
Abstract:
Error sources which influence the end-executor’s accuracy are summarized. Based on an analysis of influence caused by the structural error and transmission error, we build a pose error model of industrial robots with screw theory. If regarding the inertia force of the robot system as the external force, the robot system will become a static system. The rigidity can be analyzed using the screw theory, then we establish the dynamic error modle which is caused by the inertia force and gravity. After the error parameters which influence the static error of Selective Compliance Assembly Robot Arm (
APA, Harvard, Vancouver, ISO, and other styles
11

Yu, Huijun, Wu Zhou, Bei Peng, Xiaoping He, Xiaohong Hao, and Zhi Zeng. "Modeling the Boron-Doping Silicon Beam by a Multilayer Model." Mathematical Problems in Engineering 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/894286.

Full text
Abstract:
The boron-doping silicon beam commonly used in microdevices exhibits a nonuniform material property along its thickness or width because of the gradient of boron concentration induced by diffusion process. The constant of rigidity, one of the most important parameters of microbeam, needs to be accurately calculated and designed in the development of high precise sensors and actuators. Current design methods, mainly depending on the analytical solutions derived under the assumption of a uniform material property or some commercial software for a varied property, are not adequate and time consum
APA, Harvard, Vancouver, ISO, and other styles
12

Stokes, V. K. "Design with Nonhomogeneous Materials—Part I: Pure Bending of Prismatic Bars." Journal of Vibration and Acoustics 109, no. 1 (1987): 82–86. http://dx.doi.org/10.1115/1.3269399.

Full text
Abstract:
Because material properties vary from point to point in nonhomogeneous materials, there is some question as to what “properties” are measured in tests such as the tensile test, and how such “properties” can be used in the mechanical design process. In this paper, the mechanical response of nonhomogeneous prismatic bars in pure bending has been shown to depend on parameters that are strongly coupled combinations of geometry and material properties. The purely geometry based inertia tensor in homogeneous beam theory is replaced in the nonhomogeneous case by the rigidity tensor, which combines ge
APA, Harvard, Vancouver, ISO, and other styles
13

Poddubny, A. A., V. A. Gordon, and G. A. Semenova. "Response of the beam-base system to a sudden change in the modulus of elasticity of the beam material." Building and Reconstruction, no. 6 (December 11, 2024): 69–81. https://doi.org/10.33979/2073-7416-2024-116-6-69-81.

Full text
Abstract:
A mathematical model of the dynamic process excited in a statically loaded beam-base system by a sudden change in the beam's bending rigidity is constructed. It is assumed that either the beam material's elastic modulus or the beam's cross-sectional axial moment of inertia changes when it is rotated by 90 degrees relative to the beam's longitudinal axis while maintaining the load direction. Forced vibrations are investigated by decomposing the load and static deflection of the initial beam into rows according to the beam's natural vibration modes with changed parameters. Natural frequencies an
APA, Harvard, Vancouver, ISO, and other styles
14

Krasnobaeva, Larisa A., and Ludmila V. Yakushevich. "On the dimensionless model of the transcription bubble dynamics." AIMS Biophysics 10, no. 2 (2023): 205–19. http://dx.doi.org/10.3934/biophy.2023013.

Full text
Abstract:
<abstract> <p>The dynamics of transcription bubbles is modeled using a system of nonlinear differential equations, the one-soliton solutions of which (kinks), are interpreted as a mathematical images of transcription bubbles. These equations contain a lot of DNA dynamic parameters, including the moments of inertia of nitrous bases, distances between base pairs, distances from the centers of mass of bases to sugar-phosphate chains, rigidity of the sugar-phosphate backbone, and interactions between bases within pairs. However, estimates of the parameter values are often difficult, an
APA, Harvard, Vancouver, ISO, and other styles
15

Zhang, Ziqiang, Bin Chang, Jing Zhao, Qi Yang, and Xingkun Liu. "Design, Optimization, and Experiment on a Bioinspired Jumping Robot with a Six-Bar Leg Mechanism Based on Jumping Stability." Mathematical Problems in Engineering 2020 (January 4, 2020): 1–23. http://dx.doi.org/10.1155/2020/3507203.

Full text
Abstract:
A jumping leg with one degree of freedom (DOF) is characterized by high rigidity and simple control. However, robots are prone to motion failure because they might tip over during the jumping process due to reduced mechanism flexibility. Mechanism design, configuration optimization, and experimentation were conducted in this study to achieve jumping stability for a bioinspired robot. With locusts as the imitated object, a one-DOF jumping leg mechanism was designed taking Stephenson-type six-bar mechanism as reference, and kinematic and dynamic models were established. The rotation angle of the
APA, Harvard, Vancouver, ISO, and other styles
16

Jian, Zhang, and Liu Kun. "Rotational speed control of magnetic coupling with variable damping method." Mechanics & Industry 21, no. 4 (2020): 406. http://dx.doi.org/10.1051/meca/2020027.

Full text
Abstract:
Permanent Magnetic Coupling (PMC) is used in underwater vehicle to transmit torque from the motor to propeller without leakage and friction. Output rotational speed stability of PMC is an important index indicating the PMC output makes smaller vibration. To improve the stability of the output rotational speed, PMC dynamic characteristic was analyzed based on Lagrange equation in this paper. The dynamic characteristic was indicated by the angular phase generated by the master rotor and the slave rotor. The angular phase varied with the damping coefficient, torsional rigidity and rotational iner
APA, Harvard, Vancouver, ISO, and other styles
17

Yáñez Valdez, Ricardo, Angel Ivan Luna Díaz, Jorge Jayr Cos Díaz, Francisco Cuenca Jiménez, and Fernando Velázquez Villegas. "Structural dynamics of a 3 DOF parallel kinematic machine." Ingeniería Investigación y Tecnología 22, no. 2 (2021): 1–13. http://dx.doi.org/10.22201/fi.25940732e.2021.22.2.013.

Full text
Abstract:
Milling is an intrinsically interrupted cutting operation; therefore, vibrations occur. There are both self-excited (chatter) and forced vibration. Vibrations in milling appear due to the lack of dynamic stiffness of some components in the machine tool-tool-workpiece system. If the vibrations are excessive, the machine stability is negatively affected. In this paper a parallel kinematic machine is modelled and structurally analyzed, considering vibrational parameters (mass, inertia, stiffness, and damping). Theoretical results are used to verify the model. The proposed model provides an effect
APA, Harvard, Vancouver, ISO, and other styles
18

Vasilyev, G. S., O. R. Kuzichkin, I. A. Kurilov, and D. I. Surzhik. "Development of a methodology to model the dynamic properties of UAVS and high-order control systems." Revista de la Universidad del Zulia 11, no. 30 (2020): 189–99. http://dx.doi.org/10.46925//rdluz.30.14.

Full text
Abstract:
When modeling the dynamic properties of an unmanned aerial vehicle (UAV) and an automatic control system (ACS), it is often necessary to take into account factors such as the lack of rigidity of the aircraft structure, the influence of control and destabilizing factors, which leads to an increase in the order of the model under study. The known numerical and analytical methods do not allow us to obtain general solutions for the variable parameters of the high-order system under study, and at the same time provide the required amount of error and computational costs. A method is developed to mo
APA, Harvard, Vancouver, ISO, and other styles
19

Hrebennikov, Mykhailo M., Oleksandr H. Dibir, and Anatolii O. Kyrpikin. "Discretization of Thin-Walled Sections with Variable Wall Thickness." Journal of Mechanical Engineering 27, no. 3 (2024): 34–41. http://dx.doi.org/10.15407/pmach2024.03.034.

Full text
Abstract:
At the stage of designing thin-walled aircraft structures, to simplify calculations, their cross sections are idealized. To do this, the section with the skin and the longitudinal elements reinforcing it is replaced (when determining normal stresses) by a discrete one, consisting of concentrated areas at characteristic points. In this case, the equality of the moments of inertia of the initial and discrete sections is preserved. Such idealization is used in the calculation of thin-walled rods for normal and shear stresses (Wagner model). For sections consisting of a system of rectangular strip
APA, Harvard, Vancouver, ISO, and other styles
20

Stan, Sergiu-Dan, Florin Popişter, Alexandru Oarcea, and Paul Ciudin. "Comparative Study Using CAD Optimization Tools for the Workspace of a 6DOF Parallel Kinematics Machine." Applied Sciences 12, no. 18 (2022): 9258. http://dx.doi.org/10.3390/app12189258.

Full text
Abstract:
This paper deals with an up-to-date topic among robotic industrial applications that require a high degree of speed, rigidity, and orientation. Currently, when technology and software applications reach a high level of performance, in various robotic industrial applications that start from certain concepts, the implementation of efficient structures has proven to be challenging. New structures such as the parallel kinematic machine (PKM) category has proven its efficiency through its structure in terms of high inertia rigidity and high speeds during processes. This paper deals with the subject
APA, Harvard, Vancouver, ISO, and other styles
21

Serhii, Pozdieiev, Myhalenko Kostiantyn, Nuianzin Vitalii, Zemlianskyi Oleh, and Kostenko Tetiana. "REVEALING PATTERNS OF THE EFFECTIVE MECHANICAL CHARACTERISTICS OF CELLULAR SHEET POLYCARBONATE FOR EXPLOSION VENTING PANELS." Eastern-European Journal of Enterprise Technologies 1, no. 1 (103) (2020): 32–39. https://doi.org/10.15587/1729-4061.2020.192680.

Full text
Abstract:
Explosive concentrations of various substances can accumulate inside industrial premises. In the presence of a sufficient amount of oxygen and an ignition source, such a situation could lead to explosion that may result in the destruction of building structures and the building in general. Strengthening the stability of supporting structures is aimed at protecting industrial premises against possible destruction by explosion indoors. One of the effective ways to protect construction structures against the excessive pressure of explosion is to use explosion venting panels. In order to solve pra
APA, Harvard, Vancouver, ISO, and other styles
22

Lastochkin, Denis, Andrey Medyakov, Pavel Anisimov, and Konstantin Semenov. "Modeling of logging machine stability operating with a vertically held tree." E3S Web of Conferences 462 (2023): 01036. http://dx.doi.org/10.1051/e3sconf/202346201036.

Full text
Abstract:
The article presents the results of mathematical modeling of the stability of a logging machine with a vertically held tree when it is removed from the canopy of the forest. The calculation schemes for two positions of a vertically held tree are described. The substantiation of the idealization for the calculation schemes of a vertically held tree is given. The dynamic stability equations of a logging machine with a vertically held tree are constructed on the basis of second kind Lagrange equations system. Due to analyze the interrelationships between dynamic parameters and processes of a logg
APA, Harvard, Vancouver, ISO, and other styles
23

Ragozinskaya, V. G. "Neuropsychological Features of University Students, Prone to Classroom Fabbing." Herald of Omsk University. Series: Psychology, no. 4 (2023): 81–91. http://dx.doi.org/10.24147/2410-6364.2023.4.81-91.

Full text
Abstract:
The term “phubbing” is derived from the words “phone” and “snubbing”, and represents the act of snubbing someone in a social setting by concentrating on one's phone instead of talking to the person directly. Phubbing in the learning environment is widespread and it has a negative impact on the academic performance of students. The article presents the results of investigation aimed to reveal the features of the neuropsychological status of university students prone to phubbing behavior during lectures. The research was conducted with 168 full-time university students who volunteered to partici
APA, Harvard, Vancouver, ISO, and other styles
24

Marutyan, A. S. "I-BEAM BENT-WELDED PROFILES WITH PERFORATED WALLS AND CALCULATION OF THEIR OPTIMAL LAYOUTS." STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS 309, no. 4 (2023): 63–72. http://dx.doi.org/10.37538/0039-2383.2023.4.63.72.

Full text
Abstract:
A new technical solution of I-beam bent-welded profiles with perforated stacks and shelves with closed welds is presented. Each of the inclined faces of the shelves in cross-section has the shape of half a round halfring (a circle) with a radius equal to the height of the shelves. The maximum height of the cutouts is limited by the height of the single wall. The calculation of optimal parameters along the middle line of a thin-walled cross-section of an I-beam shape with a single wall and closed (tubular) shelves is given. As a double optimization criterion, the maximum of the moment of resist
APA, Harvard, Vancouver, ISO, and other styles
25

Abdurakhmonov, Urol, and Bakhodir Juraev. "Dynamics of the movement of the ripping tool for surface tillage." E3S Web of Conferences 264 (2021): 04048. http://dx.doi.org/10.1051/e3sconf/202126404048.

Full text
Abstract:
The study aims to analyze the stability of the movement of the ripper tool for surface tillage. The basic principles and methods of classical mechanics, mathematical analysis, and statistics were used in this study. The dynamics of the movement of a ripper tool for surface tillage are considered, depending on the forces acting on it and its design parameters. A computational dynamic model is developed, and an equation describing the angular oscillations of the longitudinal links of the parallelogram ripper mechanism is obtained. It is established that the uniformity of the depth of the cultiva
APA, Harvard, Vancouver, ISO, and other styles
26

Pei, Xiangli, Shuhao Liu, Anmin Wei, Ruizhuo Shi, and Zhendong Dai. "Bioinspired Rigid–Flexible Coupled Adaptive Compliant Motion Control of Robot Gecko for Space Stations." Biomimetics 8, no. 5 (2023): 415. http://dx.doi.org/10.3390/biomimetics8050415.

Full text
Abstract:
This paper presents a study on bioinspired rigid-flexible coupling adaptive compliant motion control of a robot gecko with hybrid actuation for space stations. The biomimetic robot gecko is made of a rigid trunk, four motor-driven active legs with dual-degree-of-freedom shoulder joints, and four pneumatic flexible pleated active attachment–detachment feet. The adaptive impedance model consists of four input parameters: the inertia coefficient, stiffness coefficient, damping coefficient, and segmented expected plantar force. The robot gecko is equipped with four force sensors mounted on its fou
APA, Harvard, Vancouver, ISO, and other styles
27

Mansurov, Tofig M., and Chingiz P. Aliyev. "THREE-DIMENSIONAL PIEZOELECTRIC ACCELEROMETER FOR MEASURING DYNAMIC PARAMETERS OF MOVING OBJECTS." SYNCHROINFO JOURNAL 6, no. 6 (2020): 10–16. http://dx.doi.org/10.36724/2664-066x-2020-6-6-10-16.

Full text
Abstract:
Analysis of structural construction of existing three-dimensional accelerometers is carried out, in which due to the opposite direction of sensitivity vectors and direction of measured inertial force, they allow to measure only linear inertia and accelerations varying in relatively small limits. On the other hand, due to the presence of elements in them that create electromagnetic fields, their construction is somewhat complicated. In addition, in known accel-erometers, due to the absence of a measurement object position sensor and an electronic control circuit, the func-tionality of the accel
APA, Harvard, Vancouver, ISO, and other styles
28

FAVIER, JULIEN, ANTOINE DAUPTAIN, DAVIDE BASSO, and ALESSANDRO BOTTARO. "Passive separation control using a self-adaptive hairy coating." Journal of Fluid Mechanics 627 (May 25, 2009): 451–83. http://dx.doi.org/10.1017/s0022112009006119.

Full text
Abstract:
A model of hairy medium is developed using a homogenized approach, and the fluid flow around a circular cylinder partially coated with hair is analysed by means of numerical simulations. The capability of this coating to adapt to the surrounding flow is investigated, and its benefits are discussed in the context of separation control. This fluid–structure interaction problem is solved with a partitioned approach, based on the direct resolution of the Navier–Stokes equations together with a nonlinear set of equations describing the dynamics of the coating. A volume force, arising from the prese
APA, Harvard, Vancouver, ISO, and other styles
29

Rogólski, Robert, and Aleksander Olejnik. "Structural model with controls of a very light airplane for numerical flutter calculations." Aircraft Engineering and Aerospace Technology 92, no. 3 (2018): 304–17. http://dx.doi.org/10.1108/aeat-01-2018-0059.

Full text
Abstract:
Purpose The finite element model developed for a new-designed aircraft was used to solve some problems of structural dynamics. The key purpose of the task was to estimate the critical flutter velocities of the light airplane by performing numerical analysis with application of MSC Software. Design/methodology/approach Flutter analyses processed by Nastran require application of some complex aeroelastic model integrating two separate components – structural model and aerodynamic model. These sub-models are necessary for determining stiffness, mass and aerodynamic matrices, which are involved in
APA, Harvard, Vancouver, ISO, and other styles
30

Руднєв, Є. С., O. O. Тимофєєва, and Р. М. Брожко. "Synthesis of a robust control system for two-mass electric drive by H∞-theory." ВІСНИК СХІДНОУКРАЇНСЬКОГО НАЦІОНАЛЬНОГО УНІВЕРСИТЕТУ імені Володимира Даля, no. 7 (263) (December 10, 2020): 44–48. http://dx.doi.org/10.33216/1998-7927-2020-263-7-44-48.

Full text
Abstract:
The practice of designing and operating control systems for industrial facilities has shown that systems synthesized according to the criteria of modular and symmetric optima, as well as by quadratic quality criteria, are sensitive to changes in the parameters of the controlled object, incoming characteristics, disturbing influences, the structure and parameters of the object model changing, which used in control loops. Such systems can lose optimality as well as productivity, if information about the object and operating environment is known with some probability or uncertainty. For an indust
APA, Harvard, Vancouver, ISO, and other styles
31

Bimberekov, Pavel A., Stanislav V. Vikulov, and Alexander O. Tokarev. "Application of the simulation-graphic method for the computational modeling of the cross-section characteristics of foundations made of T-beams installed on keelsons with deformed walls." Russian Journal of Water Transport, no. 81 (December 19, 2024): 15–24. https://doi.org/10.37890/jwt.vi81.550.

Full text
Abstract:
The object of the study is a composite beam made of an existing T-beam on a vessel - a keelson, with a web deformed within the standard values and an additional T-beam added to its free flange, which allows forming a foundation beam during the modernization of the vessel. The task is to obtain the geometric characteristics of the cross-section of such a beam. First, analytical expressions are given for a deformed T-beam with modeling of the wall in one case as a broken line, and in the other case as an undeformed beam with a height of the deformed and additional vertical element of the residua
APA, Harvard, Vancouver, ISO, and other styles
32

Alekseev, Alexandr E., Igor O. Dumanskij, and Alexey V. Prokhorov. "Plate Dampers in the Tensioning Plate Dampers in the Tensioning." Lesnoy Zhurnal (Forestry Journal), no. 5 (October 15, 2021): 142–49. http://dx.doi.org/10.37482/0536-1036-2021-5-142-149.

Full text
Abstract:
The article analyses strengths and weaknesses of bandsaw machines. While analysing we have found the relationship between the weaknesses and the tension of a band saw. Its use as a cutting tool leads to a decrease in the lateral rigidity and stability of the cutting section on the pulling chain. This leads to fluctuations in the cutting width, a decrease in the geometric accuracy of sawn timber and an increase in the roughness of the side surfaces of a kirf. The main types of tensioning unit mechanisms, which strengthen the tension and maintain its stability during operation, are defined, and
APA, Harvard, Vancouver, ISO, and other styles
33

Roshchin, V. A., S. D. Ivanov, and N. L. Mikhalchik. "DEVELOPMENT AND EXPERIMENTAL VERIFICATION OF THE SELF-ADJUSTMENT ALGORITHM OF THE OGSH LOAD LIMITER FOR BRIDGE CRANES." Vestnik SibADI 15, no. 4 (2018): 514–24. http://dx.doi.org/10.26518/2071-7296-2018-4-514-524.

Full text
Abstract:
Introduction. The mathematical self-adjustment model of the safety device for bridge cranes, which is developed by the authors as the limiter of loading capacity of broad application (OGSh) for the purpose of time reduction for device setup and of other material and labor inputs for requirements implementation of the Federal Norms and Rules (FNP) on protection of bridge cranes against overload, is described in the article.Materials and methods. Mass and dynamic characteristics of the crane (the specified mass of the drive, the inertia moment, rigidity of a pendant, response time and etc.); var
APA, Harvard, Vancouver, ISO, and other styles
34

Oleg, Beihul, Grischenko Denis, Beihul Vsevolod, Lepetova Ann, Chasov Dmytro, and Kolyada Bogdan. "DEVISING A PROCEDURE FOR CALCULATING THE DESIGNED STRENGTH OF A KINGPIN­TYPE LOAD­CARRYING SYSTEM FOR AN ARTICULATED TRACTOR CONTAINER CARRIER." Eastern-European Journal of Enterprise Technologies 5, no. 1 (107) (2020): 22–29. https://doi.org/10.15587/1729-4061.2020.214133.

Full text
Abstract:
The development of a methodology for calculating the designed strength of an unconventional kingpin-type load-carrying system for the articulated tractor container carrier on pneumatic wheels is an important and relevant task due to the unique layout of a given specialized vehicle. The purpose of this work is to devise a procedure for calculating the designed strength of a clip load-carrying system for the articulated tractor container carrier on pneumatic wheels, aimed at building an improved structure with rational metal consumption. The results of the theoretical and experimental studies ha
APA, Harvard, Vancouver, ISO, and other styles
35

Sheremet, Oleksii, Tetiana Kiriienko, Andrii Besh, and Kateryna Sheremet. "Designing a shock test system prototype based on a hydroelastic drive." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 58–65. http://dx.doi.org/10.15587/1729-4061.2021.226697.

Full text
Abstract:
Laboratory shock tests involve the reproduction of simple one-time and repeated pulses of a certain waveform. In practice, such mechanical impacts on an object are implemented at specialized testing equipment ‒ shock systems. A promising direction in the development of shock machines includes the structures that operate on the energy of elastic deformation of the compressed liquid and the shell of the vessel that contains it. Such systems make it possible to improve the versatility, manageability, and accuracy of impact tests. Underlying this study is the use of a hydroelastic drive to design
APA, Harvard, Vancouver, ISO, and other styles
36

Kartopoltsev, V. M., A. V. Kartopoltsev, and S. A. Kukharenko. "Towards dynamic property control of bridge spans." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 23, no. 6 (2021): 201–19. http://dx.doi.org/10.31675/1607-1859-2021-23-6-201-219.

Full text
Abstract:
Regulation of the dynamic properties of bridge spans is a priority field of this research, which solves the problem of increasing the obsolescence and physical periods of bridge structures manifested both at the design stage of the load redistribution in the load bearing and during long-term operation.Over the past 40 years, technical bridge diagnostics has shown that the durability and safe long-term operation can be ensured by the improved calculations, operation and stress and strain control under the excess and over-calculated live loads.The aim of this work is to control the dynamic defor
APA, Harvard, Vancouver, ISO, and other styles
37

Ponomarov, Viktor, Mukola Korchagin, and Yurii Kostenko. "Assessment of the psychological barriers level in the training process of Martial Arts and methods of their neutralization." Scientific Journal of National Pedagogical Dragomanov University. Series 15. Scientific and pedagogical problems of physical culture (physical culture and sports), no. 6(179) (June 21, 2024): 191–95. http://dx.doi.org/10.31392/udu-nc.series15.2024.6(179).35.

Full text
Abstract:
Psychological barriers in sports activities, as in any socio- professional sphere, are a subjective refraction of a problematic situation from the point of view of its potential threat in the form of a syndrome of fear of the unpredictable result of one's actions in this situation. Two conditions are necessary for the emergence of any psychological barrier: the presence of a suitable (unfavorable) external environment and the subject's internal readiness to form a barrier. There are certain limitations in the ability to overcome psychological barriers depending on their qualitative (type, natu
APA, Harvard, Vancouver, ISO, and other styles
38

Oleksii, Sheremet, Kiriienko Tetiana, Besh Andrii, and Sheremet Kateryna. "Designing a shock test system prototype based on a hydroelastic drive." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 58–65. https://doi.org/10.15587/1729-4061.2021.226697.

Full text
Abstract:
Laboratory shock tests involve the reproduction of simple one-time and repeated pulses of a certain waveform. In practice, such mechanical impacts on an object are implemented at specialized testing equipment ‒ shock systems. A promising direction in the development of shock machines includes the structures that operate on the energy of elastic deformation of the compressed liquid and the shell of the vessel that contains it. Such systems make it possible to improve the versatility, manageability, and accuracy of impact tests. Underlying this study is the use of a hydroelastic drive to design
APA, Harvard, Vancouver, ISO, and other styles
39

Solomatin, N. S., E. M. Zotov, and D. V. Simonov. "Relation between the moments of inertia of the leading and driven parts of the composite flywheel with a torsional damper." Izvestiya MGTU MAMI 5, no. 1 (2011): 87–90. http://dx.doi.org/10.17816/2074-0530-69877.

Full text
Abstract:
This article considers the results of investigation of the effect of parameters of the torsional damper of a composite flywheel on the amplitude of torque on the primary shaft of a gearbox. It is shown that it is reasonable to install a torsional damper with minimal rigidity.
APA, Harvard, Vancouver, ISO, and other styles
40

El-Gohary, Hamdy A. "Refined Nonlinear Estimation of Effective Flexural Rigidity in Reinforced Concrete Beams using Curvature Integration." Engineering, Technology & Applied Science Research 15, no. 2 (2025): 22172–77. https://doi.org/10.48084/etasr.10503.

Full text
Abstract:
Deflection control in Reinforced Concrete (RC) beams is a fundamental aspect of structural engineering. Most contemporary design codes estimate deflection using the effective moment of inertia formula, which remains largely consistent across various standards. However, an alternative and more precise approach involves computing deflection through the double integration of the moment-curvature relationship along the beam's length, offering superior accuracy but requiring significantly higher computational effort. This study evaluates deflection predictions obtained through experimental testing,
APA, Harvard, Vancouver, ISO, and other styles
41

Voevodskii, Konstantin E., Vladimir M. Strepetov, and Gennadiy E. Sereda. "Levitation Characteristics of a Transport Installation with an Electrodynamic Suspension During a Longitudinal Joint with Road Track." Transportation Systems and Technology 5, no. 2 (2019): 70–82. http://dx.doi.org/10.17816/transsyst20195270-82.

Full text
Abstract:
Aim:to propose a technical solution to ensure the lateral stabilization of the vehicle with an electrodynamic suspension. Development of a method for calculating the levitation characteristics of a transport installation with an electrodynamic suspension in the presence of a longitudinal joint in the track. Analysis of the results of theoretical studies.
 Мaterials and methods: The article used the methods of the electromagnetic field theory, generalized functions, Fourier transform, analytical and numerical methods for determining quadratures. The program for PC was developed in the Fort
APA, Harvard, Vancouver, ISO, and other styles
42

Turkyilmazoglu, Mustafa. "Uniformly Loaded Logarithmic Beam Mode with Spatially Varying Flexural Rigidity." Arabian Journal for Science and Engineering, July 2, 2024. http://dx.doi.org/10.1007/s13369-024-09275-0.

Full text
Abstract:
AbstractThis analysis explores natural leading modes represented by logarithmic functions, achieved by imposing four boundary constraints at the ends of an elastic inhomogeneous beam. The beam possessing constant material inertia, is assumed to be uniformly loaded, and is composed of material with variable stiffness. It is sought analytical expressions for beam deflections in terms of logarithmic functions. Our findings demonstrate that such formulae can be derived for a beam under axially uniform load and with spatially distributed flexural rigidity. Subsequently, the beam shapes and material
APA, Harvard, Vancouver, ISO, and other styles
43

"Nanomechanical Characterization of Apolipoprotein A-I Amyloid Fibrils." Issue 2 2020, no. 2 (2020). http://dx.doi.org/10.26565/2312-4334-2020-2-11.

Full text
Abstract:
Amyloid fibrils represent a special type of protein aggregates that are currently receiving enormous attention due to their strong implication in molecular etiology of a wide range of human disorders. Amyloid fibrils represent highly ordered self-assemblies sharing a core cross-β-sheet structure. Such organization of the fibrils is responsible for amyloid insolubility and exceptional mechanical properties. The remarkable rigidity of the protein fibrillar aggregates is due to intra- and interstrand hydrogen bonds which stabilize the β-strand scaffold of amyloid fibrils. Increasing evidence indi
APA, Harvard, Vancouver, ISO, and other styles
44

Olejnik, Aleksander, Robert Rogólski, and Michał Szcześniak. "Application of the contact and non-contact measuring techniques for on-ground resonance testing of the mini-UAV." Aircraft Engineering and Aerospace Technology ahead-of-print, ahead-of-print (2021). http://dx.doi.org/10.1108/aeat-12-2020-0327.

Full text
Abstract:
Purpose The paper describes the application of two different vibration measurement methods for the identification of natural modes of the miniature unmanned aerial vehicle (UAV). The purpose of this study is to determine resonant frequencies and modes of mini-airplane within the specified range of frequency values. Design/methodology/approach Special measuring equipment was used including both contact and non-contact techniques. The measuring systems on equipment of the Institute of Aviation Technology in the Faculty of Mechatronics, Armament and Aerospace of Military University of Technology
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography