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Journal articles on the topic 'Diagrams longitudinal forces'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Dzyuba, V. A., E. V. Zhuravleva, and A. S. Starkova. "Application of a Nonlinear Deformation Model to the Analysis of Complete Moment-Curvature Diagrams of Reinforced Concrete Elements with Reinforcement A500." Materials Science Forum 1087 (May 12, 2023): 169–75. http://dx.doi.org/10.4028/p-w7h770.

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This article suggests a calculation procedure for the parameters of complete moment-curvature deformation diagrams with a down leg that can be used for the calculations of the multistorey monolithic building frameworks taking into account the specifics of reinforced concrete. To construct complete deformation diagrams for bending elements, a non-linear deformation model is used that is based on using the physical diagrams of the concrete and reinforcements to calculate the inner moments of cross-sections at all loading stages via balance and strain compatibility equations. Using this model, th

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2

Kotikov, Jurij. "DISTRIBUTION OF THE NORMAL REACTIONS ON THE QUANTOMOBILE WHEELS." Architecture and Engineering 6, no. 4 (2021): 72–79. http://dx.doi.org/10.23968/2500-0055-2021-6-4-72-79.

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Introduction: The progress of science has made it possible to create new quantum engines (QEs) powered by physical vacuum energy. A QE will generate a vector-based propulsive force, or thrust, applicable to the vehicle body directly, with no transmission required. Traditional cars will be upgraded with QEs and thus converted into quantomobiles. QE thrust application at the point of the vehicle body, hovering above the bearing surface, introduces changes in the traditional diagram of forces acting on the vehicle. Therefore, it is necessary to assess the influence of thrust on the longitudinal s

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Belov, M. P., O. A. Kundyukov, and V. I. Korolev. "Synthesis of a System for Stabilizing the Total Cutting Force of a Metalworking Lathe." LETI Transactions on Electrical Engineering & Computer Science 17, no. 10 (2024): 98–112. https://doi.org/10.32603/2071-8985-2024-17-10-98-112.

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A mathematical model for calculating the value of workpiece deviation is developed. Diagrams of transverse forces and bending moments in workpieces made of different materials under different cutting conditions is constructed. The influence of the cutting depth and longitudinal feed rate of a lathe on the workpiece axis deviation is analyzed. A structural diagram for calculating the cutting depth is synthesized taking into account workpiece bending in the transverse feed drive control system. A functional diagram of cutting force is considered. A mathematical description of the main motion dri

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Krivobokov, Nikolay, Svetlana Sazonova, and N. Akamsina. "Numerical modeling of the technical state of frame building structures." Modeling of systems and processes 15, no. 1 (2022): 52–66. http://dx.doi.org/10.12737/2219-0767-2022-15-1-52-66.

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Structures of a multi-storey frame building are considered as the object of the survey. Based on the results of the inspection of the technical condition of the object, verification calculations of the bearing capacity of structures for the effect of the design forces on the actual design schemes and on the action of real operational loads and influences were carried out. An assessment of the technical condition of individual structural elements of the object has been carried out. The actual technical condition of the building and its elements has been determined. Additional defects and damage

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Bednarek, Włodzimierz. "Longitudinal displacements of railway jointless track due to local temperature difference on its length." Transportation Overview - Przeglad Komunikacyjny 2020, no. 2 (2020): 11–27. http://dx.doi.org/10.35117/a_eng_20_02_02.

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In the paper is shown an analysis of a CWR track’s longitudinal displacements due to a local temperature difference on its length. The thermical forces on the railway track length arise due to a local temperature difference of rail, causing the local, zonal the longitudinal displacements of rail cross-sections. Axial displacements of track induce in succession a longitudinal reaction of roadbed in such a degree on which a arising displacements allow. Additionally a arising during track operating a variable longitudinal resistance on track’s length (generated among other things by different sta

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Hobbs, Sarah Jane, Mark A. Robinson, and Hilary M. Clayton. "A simple method of equine limb force vector analysis and its potential applications." PeerJ 6 (February 21, 2018): e4399. http://dx.doi.org/10.7717/peerj.4399.

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Background Ground reaction forces (GRF) measured during equine gait analysis are typically evaluated by analyzing discrete values obtained from continuous force-time data for the vertical, longitudinal and transverse GRF components. This paper describes a simple, temporo-spatial method of displaying and analyzing sagittal plane GRF vectors. In addition, the application of statistical parametric mapping (SPM) is introduced to analyse differences between contra-lateral fore and hindlimb force-time curves throughout the stance phase. The overall aim of the study was to demonstrate alternative met

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Gerlici, Juraj, Alyona Lovska, and Mykhailo Pavliuchenkov. "Study of the Dynamics and Strength of the Detachable Module for Long Cargoes under Asymmetric Loading Diagrams." Applied Sciences 14, no. 8 (2024): 3211. http://dx.doi.org/10.3390/app14083211.

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This article highlights the structural features of the detachable module for the transportation of long cargoes. The choice of profiles for the detachable module was based on the resistance moments of its components. The detachable module was considered a rod structure on four supports. To determine the longitudinal loads acting on the detachable module, mathematical modeling of its longitudinal dynamics was carried out, provided they were placed on a flat car during a shunting impact. The accelerations obtained were used for the calculations of the detachable module. This article presents the

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Notkus, Algirdas J. "FORCES IN REINFORCED CONCRETE BRIDGE DECK SLABS/TILTŲ PERDANGŲ GELŽBETONINĖS PLOKŠTĖS ĮRĄŽOS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2, no. 8 (1996): 52–59. http://dx.doi.org/10.3846/13921525.1996.10590172.

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A distinct difference between forces, especially bending moments, in slabs of slab-and-beam deck of reinforced concrete bridges, determined by the methods of analysis, applied in the former USSR and France, is pointed out in the article. The essence of calculation of forces in the slab due to bridge loads is presented. Deformations of deck as a spatial structure are resolved into local between beams and spatial characteristics for the whole deck. Local bending slab moments due to local deformations are calculated approximately using diagrams of a continuous and with built-in-end beam. It is sh

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9

Landa-Ruiz, Laura, René Croche, Griselda Santiago-Hurtado, et al. "Evaluation of the Influence of the Level of Corrosion of the Reinforcing Steel in the Moment-Curvature Diagrams of Rectangular Concrete Columns." European Journal of Engineering and Technology Research 6, no. 3 (2021): 139–45. http://dx.doi.org/10.24018/ejeng.2021.6.3.2423.

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In the present work, it is proposed to include in the theoretical curves of moment-curvature (m- ?) the effect of corrosion by obtaining the decrease in the area of longitudinal reinforcing steel. The corrosion depth will be obtained from the crack width and corrosion length observed in the cover concrete. With the depth of corrosion, the area of steel that is lost will be obtained and this modification will be incorporated into the theoretical procedure to elaborate the m- ? curves. The forces of the steel will be obtained from an elastoplastic model with curved hardening and the forces of th

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Dmytrenko, Yevhen, Ihor Yakovenko, and Oleg Fesenko. "Strength of eccentrically tensioned reinforced concrete structures with small eccentricities by normal sections." Scientific Review Engineering and Environmental Studies (SREES) 30, no. 3 (2021): 424–38. http://dx.doi.org/10.22630/pniks.2021.30.3.36.

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It is implemented the method of normal rectangular sections slab (shell) reinforced concrete elements strength calculating with flat eccentric tensile strength using the deformation m ethod. The results of the calculation are analyzed for the case of eccentric tension with small eccentricities with varying next parameters: the height of the cross section and the reinforcement coefficient. It is investigated the character of diagrams condition change of section “N – ?c(1)” at gradual change of the stress-strain state from eccentric to the central tension. It is revealed that when the eccentrici

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Lazouski, Dzmitry N., and Aliaksandr M. Khatkevich. "Deformation approach to the calculation of compression resistance of reinforced stone elements." Vestnik MGSU, no. 12 (December 2022): 1638–52. http://dx.doi.org/10.22227/1997-0935.2022.12.1638-1652.

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Introduction. When calculating stone and reinforced stone elements, only the limiting stage before destruction is considered, the nonlinearity of deformation of materials and, accordingly, the redistribution of forces between masonry and longitudinal reinforcement in cross sections are not taken into account. A deformation approach to the calculation of compression resistance of reinforced stone elements is considered. It allows us to take into account the physical nonlinearity of deformation of materials of reinforced stone elements.  Materials and methods. Accounting for physical

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Landa-Ruiz, Laura, René Croche, Griselda Santiago-Hurtado, et al. "Evaluation of the Influence of the Level of Corrosion of the Reinforcing Steel in the Moment-Curvature Diagrams of Rectangular Concrete Columns." European Journal of Engineering and Technology Research 6, no. 3 (2021): 74–80. http://dx.doi.org/10.24018/ejers.2021.6.3.2423.

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In the present work, it is proposed to include in the theoretical curves of moment-curvature (m- φ) the effect of corrosion by obtaining the decrease in the area of longitudinal reinforcing steel. The corrosion depth will be obtained from the crack width and corrosion length observed in the cover concrete. With the depth of corrosion, the area of steel that is lost will be obtained and this modification will be incorporated into the theoretical procedure to elaborate the m- φ curves. The forces of the steel will be obtained from an elastoplastic model with curved hardening and the forces of th

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13

Rahimov, R., Yu Boronenko, A. Tretyakov, and Sh Sultonov. "A new way to determine the indicators of vertical and horizontal of a subway car." E3S Web of Conferences 383 (2023): 01017. http://dx.doi.org/10.1051/e3sconf/202338301017.

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The issues of measuring the coefficients of vertical and horizontal dynamics of a subway car during running dynamic tests are reviewed. The theoretical research of bogie frame loading by finite element method has been done. Analysis of complex calculation outcomes and stress distribution diagrams on bogie frame under the action of vertical, longitudinal, and lateral forces has allowed defining the place of strain gauges installation on the elements of the bogie and the signal processing method for measuring vertical and lateral forces acting on bogie frame of the subway car. The new measuring

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14

Sazonova, S. A., V. F. Asminin, A. V. Zvyagintseva, T. V. Kurchenkova, and S. S. Rylev. "Numerical calculation of a statically indeterminate frame by the finite element method." Journal of Physics: Conference Series 2094, no. 3 (2021): 032030. http://dx.doi.org/10.1088/1742-6596/2094/3/032030.

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Abstract A numerical calculation of a statically indeterminate frame with high rigidity elements with the computer program STAB12. EXE using the finite element method is performed. An example of generating the source data for the program STAB12. EXE with subsequent processing of the results of the calculations is given. The features of checking the balance of nodes, rods and the frame as a whole based on the use of values taking into account the signs on the diagrams of torques, longitudinal and transverse forces are described. According to the results of calculations, the computer shows the f

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Azmi, Ahmad Faza. "Structural Analysis Program Using Direct Stiffness Method for The Design of Reinforced Concrete Column." JEECS (Journal of Electrical Engineering and Computer Sciences) 2, no. 1 (2017): 183–90. http://dx.doi.org/10.54732/jeecs.v2i1.161.

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Most of the analyzes and calculations in civil engineering have been using computer. But many commercial structuralanalysis programs are relatively expensive. Hence one of the alternative way is using a self developed structuralanalysis program. The computer program is constructed using Visual Basic 6 programming language. Using directstiffness method and theory of ACI 318-02, a numerical procedure along with a computer program was developed forthe structural analysis and design of reinforced concrete member. From the direct stiffness method,in terms ofstructural analysis, the output that obta

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Roman, Romaniuk, Levchuk Kateryna, Hasylo Yurii, Chasov Dmitry, and Kriukovska Olha. "CONSTRUCTION OF A FORCE METHOD FOR ESTIMATING THE LONGITUDINAL STABILITY OF THE PROCESS OF THIN SHEET ROLLING." Eastern-European Journal of Enterprise Technologies 2, no. 7 (98) (2019): 38–48. https://doi.org/10.15587/1729-4061.2019.160487.

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We have analyzed theoretical features of rolls gripping capacity at simple rolling process under a steady mode. It is shown that depending on the conditions for deformation the ratio of the maximum gripping angle to a friction coefficient can be equal to, be less or more than 2. An experimental study has been performed involving the rolling of lead stepped samples measuring the forward creep at each step. Results of the experiment demonstrate that in the extreme case of deformation the forward creep is greater than zero, that is, there is a sufficient reserve of frictional forces so that reduc

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17

Marin, Cornel. "Study of the Influence of the Longitudinal Slipping of a Package of Suspended Bars on Stress Diagrams and on its Deformations." Scientific Bulletin of Valahia University - Materials and Mechanics 19, no. 21 (2023): 42–48. http://dx.doi.org/10.2478/bsmm-2023-0018.

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Abstract To calculate the bending deformations of a package of elastic beams suspended by means of tie rods, a calculation algorithm using the step function Φ (x-a) from the professional MATHCAD calculation program was used. The step function Φ (x-a) allowed the writing of the analytical relations of the internal shear and bending forces in the beam subjected to bending and the drawing of the corresponding diagrams. Also, the calculation algorithm allowed the writing of the analytical relations of the deformations of the bar (arrows and rotations) with the help of the loading function Ψ (x), r

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18

LAZOUSKI, D., D. GLUHAU, and Y. LAZOUSKI. "MODELING OF THE BEHAVIOR OF REINFORCED CONCRETE ELEMENTS, STRENGTHENED IN THE TENSIONED ZONE, UNDER THE ACTION OF A LONG-TERM LOAD." Herald of Polotsk State University. Series F. Civil engineering. Applied sciences 31, no. 8 (2022): 75–80. http://dx.doi.org/10.52928/2070-1683-2022-31-8-75-80.

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This article provides suggestions for improving the method for analysis of the parameters of the stress-strain state of bent reinforced concrete elements, strengthened in the tension zone, taking into account the effects of concrete creep under a long-term load. The general non-linear deformation model for structural analysis of reinforced concrete elements under the combined action of bending moments and longitudinal forces is taken as a basis, using a mathematical description of the deformation diagrams of concrete and reinforcement. The proposed model makes it possible to take into account

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19

Soroka, Mykola. "Bearing Capacity of Structures Made of Materials with Different Tensile and Compression Strengths." Materials Science Forum 968 (August 2019): 200–208. http://dx.doi.org/10.4028/www.scientific.net/msf.968.200.

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The paper considers the problem of the ultimate load finding for structures made of a material with different limits of tensile strength and compression. The modulus of elasticity under tension and compression is the same. It is assumed that upon reaching the ultimate strength, the material is deformed indefinitely. The calculations use a simplified material deformation diagram — Prandtl diagrams. The limiting state of a solid rectangular section under the action of a longitudinal force and a bending moment is considered. The dependences describing the boundary of the strength of a rectangular

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20

Moskovtseva, Violetta, Sergey Fedorov, and Margarita Amelina. "CALCULATION MODEL OF A MULTI-STOREY REINFORCED CONCRETE FRAME WITH COMPLEXLY STRESSED BEAMS UNDER ACCIDENTAL IMPACT." International Journal for Computational Civil and Structural Engineering 19, no. 2 (2023): 150–60. http://dx.doi.org/10.22337/2587-9618-2023-19-2-150-160.

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A computational model is presented for determining deformations in complexly stressed beams of a structurally non-linear reinforced concrete frame in a transcendental state caused by a special emergency action in the form of a sudden removal of one of the structural elements. The determination of the stress-strain state after the formation of spatial cracks in the reinforced concrete elements of the frame was carried out using the calculated spatial section. At the same time, dynamic additional loads in the design section of the reinforced concrete frame element from a special impact are deter

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21

Oudah, Fadi, and Raafat El-Hacha. "Two-discrete-elements concrete shear deformation model: Formulation and application in the seismic evaluation of reinforced concrete shear walls." Advances in Structural Engineering 23, no. 16 (2020): 3429–45. http://dx.doi.org/10.1177/1369433220916938.

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Shear deformation in reinforced concrete structures is of a complex nature. A thorough understanding of the interaction between the shear strength, flexural strength, and flexural ductility is not yet achieved. A new shear-deformation-based theory is proposed and validated in this study. The so-called two-discrete-elements (TDE) shear deformation theory idealizes reinforced concrete members as series of two discrete types of elements: S-elements and C-elements. The S-elements are used to model the regions of concrete reinforced to resist flexural and shear deformation using longitudinal and tr

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Bandurin, M. A., V. A. Volosukhin, I. A. Prikhodko, and I. P. Bandurina. "Application of mathematical modeling for calculation of dock structures of the spillway construction of the Krasnodar reservoir." IOP Conference Series: Earth and Environmental Science 1138, no. 1 (2023): 012048. http://dx.doi.org/10.1088/1755-1315/1138/1/012048.

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Abstract The article deals with modern issues of the application of mathematical modeling taking into account the changing parameters of the reliability of the final resource of the dock structures of the spillway construction of the Krasnodar reservoir. Hydraulic structures of the pressure front of the Krasnodar reservoir are designed and built as structures of the II capital class. Analyzing the performed mathematical modeling, we see that the sections in the wall are “dangerous” at the place where it adjoins the bottom. To perform static calculations, we select a strip with a width of 1 lin

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Mickoski, Hristijan, Ivan Mickoski, Marjan Djidrov, and Filip Zdraveski. "Mathematical Model of New Type of Train Buffer Made of Polymer Absorber—Determination of Dynamic Impact Curve for Different Temperatures." Machines 6, no. 4 (2018): 47. http://dx.doi.org/10.3390/machines6040047.

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Previous experimental knowledge has confirmed that one of the most influential factors affecting the performance of polymer friction absorbers embedded in buffer housing as part of the buffer and chain coupler is the temperature. This paper defines a mathematical model of a friction-type polymer absorber, PMKP-110. The presented mathematical model specifically includes the influence of the environment temperature on the dynamic impact curve for −60 °C and 15 °C. The dependence between the initial pre-tension of the buffer and the ambient temperature is calculated. The model involves an equatio

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V. M., Vikulov, and Volkov M. N. "The influence of bottom-up anchors pre-tension optimization on the prediction of pit walls rockfall displacements." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1, no. 3 (2021): 5–12. http://dx.doi.org/10.21440/0536-1028-2021-3-5-12.

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Introduction. Currently in Russia, innovations in urban subsoil facilities construction are among the key factors of economic development. To improve the efficiency of holding a pit wall in restraint urban conditions and prevent soil loosening around the pit, it is proposed to optimize the pre-tension forces of the bottom-up anchors. It has been determined that the pre-tension forces of the active anchors create extra retention forces in the sliding wedge and, in some specified sense, reinforce the walled soil. Research methodology. When modeling the complex calculation of a pit wall, 4 main s

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Zakovorotny, V. L., V. E. Gvindzhiliya, K. V. Kislov, and D. N. Veremeev. "Tool and workpiece deformation effect in the cutting speed direction on the machining dynamics." Proceedings of Higher Educational Institutions. Маchine Building, no. 8 (761) (August 2023): 51–67. http://dx.doi.org/10.18698/0536-1044-2023-8-51-67.

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Numerous studies were devoted to studying the dynamic cutting system considered in combination of the tool and the workpiece sub-systems interacting through a dynamic connection formed by the machining process. Dynamic coupling is simulated by the cutting forces represented in the system state coordinates, which determines the system properties. Several models were proposed to describe the dynamic connection reflecting various experimentally observed effects and contributing to the self-excitation. Regenerative effect of the tool trace left on the workpiece at the previous revolution was consi

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Younesi, Farzan, Solmaz Soleimanpour, Mohammad Alihemmati, et al. "Finite Element Analysis of Stress Distribution in Tooth-Implant-Supported Prostheses: Impact of Periodontal Support, Tooth Count, and Implants." Galen Medical Journal 13, SP1 (2024): E3608. https://doi.org/10.31661/gmj.v13isp1.3608.

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Background: Biomechanical factors are crucial for the success of tooth/implant-supported prostheses. Despite advancements in implantology, connecting natural teeth to implants remains challenging due to differences in movement, leading to potential complications. This study investigated the impact of periodontal support, number of teeth, and implants on stress distribution in tooth-implant-supported prostheses using three-dimensional (3D) finite element analysis. Material and Methods: This study utilized 3D finite element analysis to evaluate six virtual tooth/implant-supported prostheses with

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Acuña, Marcelo Andrés, Gustavo Simão Rodrigues, Rafael Vitor Guerra Queiroz, and Elias Dias Rossi Lopes. "Modeling and dynamic analysis of a 6 x 6 heavy military truck by adaptive model predictive control with application to NATO lane change test course." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 13 (2020): 3128–44. http://dx.doi.org/10.1177/0954407020924156.

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In this paper, the computer-aided vehicle dynamic analysis of a 6x6 heavy military truck is presented and examined. For the analysis, a MATLAB/Simulink® platform is used to design and model a truck. The vehicle configuration taken into account for the analysis is the powertrain (engine, gear box, transfer gear, differential), suspension, steering system and tire model according to the Pacekja 89’ formulation. In addition, the effect of the rolling resistance and drag is considered, in order to represent the vehicle behavior as real as possible. The longitudinal dynamic and lateral dynamic are

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Kurnavina, Sofia, and Ilya Tsatsulin. "The design model of reinforced concrete beam formed by the field of cracks directions." E3S Web of Conferences 97 (2019): 04017. http://dx.doi.org/10.1051/e3sconf/20199704017.

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Now the design of reinforced concrete constructions for static and dynamic loads with regard to the elastoplastic resistance diagrams of materials is widely used. The model of a reinforced concrete beam is proposed, which consists of trapezoidal elements formed by the field of cracks directions. The theoretical angle of inclination of a crack at any point of a beam has been determined on the basis of minimum of external load, necessary for its formation, which has been obtained from the equation of energy balance. The deflections of each point of a beam have been obtained by solving a differen

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Stachyra, Grzegorz, Lukasz Kloda, and Zofia Szmit. "Coupled Modal Analysis and Aerodynamics of Rotating Composite Beam." Materials 16, no. 23 (2023): 7356. http://dx.doi.org/10.3390/ma16237356.

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This study primarily focuses on conducting, both experimentally and numerically, a modal analysis of a cantilever composite beam. Through extended numerical simulations, we investigate Campbell diagrams, which, depending on the rotation speed of the structure, comprise natural frequencies and their corresponding modal shapes. Our results are categorized into two main aspects: the classical single-mode behavior and an innovative extension involving linearly coupled modal analysis. One key novelty of our research lies in the introduction of an analytical description for coupled mode shapes, whic

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Sekhavatjou, Mohammad, Mojtaba Azhari, and Saeid Sarrami-Foroushani. "Bubble Complex Finite Strip Method in the Stability and Vibration Analysis of Orthotropic Laminated Composite Plates." International Journal of Applied Mechanics 12, no. 09 (2020): 2050106. http://dx.doi.org/10.1142/s1758825120501069.

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In this study, a bubble complex finite strip method (BCFSM) with the higher-order zigzag theory is formulated for mechanical buckling and free vibration analysis of laminated composite plates, including cross-ply and angle-ply laminates. Few studies have been done to obtain the analytical solutions for clamped and free boundary conditions in the longitudinal and transverse edges. Therefore, this study, for the first time, investigates the effects of various boundary conditions on the stability and vibration results of laminated composite plates subjected to axial or pure shear forces with the

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Niculescu, Adrian Ioan. "1⁄4 Car Model for Suspension Trim Corrector Performances Evaluation." Applied Mechanics and Materials 823 (January 2016): 205–10. http://dx.doi.org/10.4028/www.scientific.net/amm.823.205.

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The paper presents a complex quarter car model obtained with ADAMS software, View module, useful in the first stage of suspension dimensioning and optimization.The model is equipped with compression and rebound stopper buffer and suspension trim corrector.The proposed quarter car model with two degrees of freedom (wheel and body) performs all these goals allowing changing:Geometrical elementsPosition of equilibrium, depending on vehicle load;Trim correction;Elastic and dissipative characteristics of the suspension and tire;Suspension stroke;Road profile, assessed either by simple or summation

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Ahmed, Zuber, and Esar Ahmed. "Non-Linear Analysis of Cable Stayed Bridges." International Journal of Emerging Research in Management and Technology 6, no. 9 (2018): 36. http://dx.doi.org/10.23956/ijermt.v6i9.82.

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The concept of cable-stayed bridges dates back to the seventeenth century. Due to their aesthetic appearance, efficient utilization of material, and availability of new construction technologies, cable-stayed bridges have gained much popularity in the last few decades. After successful construction of the Sutong Bridge, a number of bridges of this type have been proposed and are under construction, which calls for extensive research work in this field. Nowadays, very long span cable-stayed bridges are being built and the ambition is to further increase the span length using shallower and slend

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Gantumur, B., V. A. Prechissky, M. A. Sleptsov, and A. A. Barat. "ON THE EFFICIENCY OF USING AUTONOMOUS LOCOMOTIVES ON THE RAILWAYS OF MONGOLIA." World of Transport and Transportation 15, no. 1 (2017): 100–110. http://dx.doi.org/10.30932/1992-3252-2017-15-1-9.

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[For the English abstract and full text of the article please see the attached PDF-File (English version follows Russian version)].ABSTRACT The requirements of speed, reliability, safety and cost-effectiveness of cargo transportation pose a number of complex logistics tasks for Ulaanbaatar Railroad (UBZhD), including the choice of optimal train mass, series and number of locomotive sections for driving a freight train of a given weight. The mass of the train selected in the course of the study was checked by the condition of starting from the place on the calculated ascent. Based on the analys

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Morozov, Nikita F., Dmitriy A. Indeitsev, Vasilisa S. Igumnova, Alexei V. Lukin, Ivan A. Popov, and Lev V. Shtukin. "Nonlinear dynamics of mode-localized MEMS accelerometer with two electrostatically coupled microbeam sensing elements." Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy 8, no. 2 (2021): 233–46. http://dx.doi.org/10.21638/spbu01.2021.204.

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In the presented work, a model of a microelectromechanical accelerometer with two movable beam elements located between two fixed electrodes is proposed. The action of the transfer forces of inertia in the longitudinal direction leads to a change in the spectral properties of the system, which is a useful output signal of the sensor. The dynamics of the system in the presence of a weak electrostatic coupling between the sensitive elements is characterized by the phenomenon of modal localization - a significant change in the amplitude ratios for the forms of inphase and antiphase oscillations w

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Fomin, V., and I. Fomina. "STUDY OF A CONCRETE COLUMN FOR STABILITY UNDER ASYMMETRIC CORROSION." Mechanics And Mathematical Methods 4, no. 2 (2022): 53–64. http://dx.doi.org/10.31650/2618-0650-2022-4-2-53-64.

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Reinforced concrete became widespread due to its many positive properties: durability, fire re-sistance, resistance to corrosive effects, high resistance to static and dynamic loads, low operating costs for maintaining buildings and structures, and relative cheapness of manufacturing. The presence of widespread large and small aggregate used in the production of reinforced concrete makes it applicable in all corners of the globe and even beyond its borders.The emergence and development of building structures, including reinforced concrete, is inextricably linked to the conditions of the materi

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L., V. URSULYAK, and O. SHVETS A. "IMPROVEMENT OF MATHEMATICAL MODELS FOR ESTIMATION OF TRAIN DYNAMICS." Science and Transport Progress, no. 6(72) (December 8, 2017): 70–82. https://doi.org/10.15802/stp2017/118002.

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<strong>Purpose</strong>. Using scientific publications the paper analyzes the mathematical models developed in Ukraine, CIS countries and abroad for theoretical studies of train dynamics and also shows the urgency of their further improvement. <strong>Methodology</strong>. Information base of the research was official full-text and abstract databases, scientific works of domestic and foreign scientists, professional periodicals, materials of scientific and practical conferences, methodological materials of ministries and departments. Analysis of publications on existing mathematical

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Lizunov, Petro, Hryhorii Ivanchenko, and Valentyn Nedin. "The stability of shafts under the action of periodic axial loads." Strength of Materials and Theory of Structures, no. 107 (October 29, 2021): 257–64. http://dx.doi.org/10.32347/2410-2547.2021.107.257-264.

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The paper presents the investigation results of the harmonic periodic axial loads’ influence on the stability of shaft. Such loads can be appeared during the running of the vessel passing the turbulence zones from the side of the propeller to the shafting. In shafting, the influence of oscillatory motion performed in adjacent part, which is transmitted through the coupling due to longitudinal movements, can be periodic, too. Therefore, the question of the stability of such shafts during rotation is relevant. In this way, the task of such drill-rod study stability has actuality. In this case, t

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Mikerego, Emmanuel, Trésor Akimana, and Jean Pierre Gatore. "Assessment on the structural impact of the slabs with joists used in the reinforced concrete structures in Burundi." Vestnik MGSU, no. 3 (March 2023): 358–66. http://dx.doi.org/10.22227/1997-0935.2023.3.358-366.

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Introduction. This paper addresses the effect of reinforced concrete slabs with joists on the behavior of reinforced concrete buildings.  Materials and methods. Firstly, models of 3-storey, 6-storey, 9-storey and 12-storey buildings were used to determine internal longitudinal forces in the most heavily loaded column on the ground floor and to identify the unloading action of slabs with joists. Secondly, natural periods of the structures were identified by solving the modal equation of vibration in reinforced concrete building models to identify the effect of the unloading action o

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LUCHKO, J. J. "DETERMINATION OF CRACK RESISTANCE OF CONCRETE ON THE BASIS OF DESTRUCTION MECHANICS." Bridges and tunnels: Theory, Research, Practice, no. 21 (June 6, 2022): 58–69. http://dx.doi.org/10.15802/bttrp2022/258265.

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Purpose The objective of the paper is to study and generalize the characteristics of heavy concretes crack resistance based on real experimental research, – the coefficient of stress intensity Kсexp, the coefficient of energy characteristic of effective surface energy γexp, opening the banks at the top of the crack δсexp and establishing the dependence of acoustic emission AE-SEq with the specified parameters of concrete crack resistance and in accordance with current standards. Methodology. To achieve this goal, a review and synthesis of scientific and technical sources were made and comprehe

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Žgomba, Daniel, Anton Turk, Marko Hadjina, Dijana Hadjina, and Ivan Margić. "Longitudinal Ship Launching." Journal of Maritime & Transportation Science 3, no. 3 (2020): 239–49. http://dx.doi.org/10.18048/2020.00.18.

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In this paper the ship placement on the slipway and technology of longitudinal launching is analyzed along with conducted static calculation. The first part of the paper describes the longitudinal slipway with all of its equipment made for reception and placement of the particular type of ship. The second part of the paper is describing longitudinal launching of the ship with all of the critical moments during the launching. Every one of the critical positions of the ship is defined and the prevention discussed. Forces and moments of forces for every stage of the launching are calculated with

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Abdullaev ., A. "RESEARCH OF THE INFLUENCE OF LONGITUDINAL COMPRESSION ON THE STRENGTH OF THE WALL OF TWO-TURNED REINFORCED CONCRETE ELEMENTS WITH A CHARACTERISTIC EPURA BENDING MOMENTS IN THE AREA OF ACTION OF LATERAL FORCES." National Association of Scientists 3, no. 72 (2021): 34–37. http://dx.doi.org/10.31618/nas.2413-5291.2021.3.72.491.

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Experimental studies have been carried out to study the effect of longitudinal compression on the strength of the wall of I-beams of reinforced concrete beams.It has been established that with the central application of a longitudinal compressive force, the strength of the wall of I-beams of reinforced concrete beams with an alternating diagram of bending moments in the zone of action of transverse forces practically depends little on the degree of longitudinal compression.A comparative analysis of the results obtained with the results of similar experimental studies carried out on I-beam rein

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GRAH, ALEKSANDER, DENNIS HAAKE, UWE ROSENDAHL, JÖRG KLATTE, and MICHAEL E. DREYER. "Stability limits of unsteady open capillary channel flow." Journal of Fluid Mechanics 600 (March 26, 2008): 271–89. http://dx.doi.org/10.1017/s0022112008000529.

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This paper is concerned with steady and unsteady flow rate limitations in open capillary channels under low-gravity conditions. Capillary channels are widely used in Space technology for liquid transportation and positioning, e.g. in fuel tanks and life support systems. The channel observed in this work consists of two parallel plates bounded by free liquid surfaces along the open sides. The capillary forces of the free surfaces prevent leaking of the liquid and gas ingestion into the flow.In the case of steady stable flow the capillary pressure balances the differential pressure between the l

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Elsayed, M. A., D. W. Dareing, and M. A. Vonderheide. "Effect of Torsion on Stability, Dynamic Forces, and Vibration Characteristics in Drillstrings." Journal of Energy Resources Technology 119, no. 1 (1997): 11–19. http://dx.doi.org/10.1115/1.2794215.

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Traditionally, the analysis of stability in drillstrings is based on longitudinal vibrations only. However, field experience indicates the presence of torsional effects in the form of modulations in longitudinal vibrations. Moreover, torsional dynamic forces are significant and lead to joint problems during drilling. In this paper, we discuss the effect of torsional vibrations on the stability and both longitudinal and torsional forces in drillstrings. Using a model of a typical drillstring that incorporates both longitudinal and torsional multi-degree of freedom, we develop the equations gove

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Dovzhenko, Oksana, Volodymyr Pohribnyi, Oleksandr Shkurupiy, and Pavlo Mytrofanov. "Strength Design Method of Reinforced Concrete Beam Elements along an Inclined Crack on the Transverse Forces and Bending Moments Joint Action." International Journal of Engineering & Technology 7, no. 4.8 (2018): 196–202. http://dx.doi.org/10.14419/ijet.v7i4.8.27240.

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The forces scheme in the reinforced concrete elements inclined section is proposed under the transverse forces and bending moments joint action. The diagram shows the transverse and longitudinal forces perceived by the compressed concrete zone and longitudinal reinforcement, forces in the transverse reinforcement and engagement in an inclined crack. The truncated concrete wedge strength problem simulating a compressed zone over a dangerous inclined crack is solved on the plasticity theory basis. An engineering method for calculating the bending elements strength along an inclined crack is deve

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Khakimov, Shaukat, Erkin Fayzullaev, Azimjon Rakhmonov, and Rustam Samatov. "Variation of reaction forces on the axles of the road train depending on road longitudinal slope." E3S Web of Conferences 264 (2021): 05030. http://dx.doi.org/10.1051/e3sconf/202126405030.

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The article discusses the influence of the road longitudinal slope on variation in reaction forces on the wheels of the road train. The description of the longitudinal slope of the road and methods of its determination are given. The design diagram of the forces and moments acting on the road train during its movement uphill and downhill is presented. Equations for calculating the change in the load on the three axles of the road train, depending on the longitudinal slope of the road and the mode of movement, are presented. Based on the calculation results, graphs were constructed to illustrat

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Lechniak, Juliusz, and Krzysztof Kamiński. "Generating Interaction Curve Graph Based on the Rotation Angle of Strain Diagram, According to EN 1992." Applied Mechanics and Materials 797 (November 2015): 61–68. http://dx.doi.org/10.4028/www.scientific.net/amm.797.61.

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The most comfortable way to present capacity is M-N interaction curve diagram (bending moment and longitudinal force). Graph of M-N most commonly appears as a function, where an axial force is the argument and the bending moment is the value. This work introduce a formation of the curve way, where the the rotation angle of the strain diagram is the argument, and the full strain diagram is the value. Using the complete state of the strain of the cross section, enables easy calculation the M-N forces using stress-strain diagram for a given material. Interaction graph is based on parabola-rectang

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Riaz, Muhammad Zain Bin, Umair Iqbal, Huda Zain, et al. "Influence of Vertical Force on Shields’ Curve and Its Extension in Rapidly Varied Flow." Water 16, no. 20 (2024): 2960. http://dx.doi.org/10.3390/w16202960.

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Sediment transport is a geophysical phenomenon characterized by the displacement of sediment particles in both the horizontal and vertical directions due to various forces. Most of the sediment transport equations currently used include only parameters related to the horizontal direction. This study measured both instantaneous longitudinal and vertical parameters, i.e., velocities and forces, and found that the magnitude and direction of the vertical force play an important role in sediment incipient motion. An innovative experimental system was developed to investigate the effect of vertical

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Soroka, M. "Limit state of reinforced double-hinged arches of i-section." Mechanics And Mathematical Methods 5, no. 2 (2023): 92–101. http://dx.doi.org/10.31650/2618-0650-2023-5-2-92-101.

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The method of determining the limit load for double-hinged arches is considered. The calculation is performed using the limit equilibrium method. The cross-section of the arch is taken in the form of a reinforced I-beam. The strain-deformed state of the I-beam material is described by the Prandtl diagram. But unlike the classical diagram, it has different yield points under tension and compression. The reinforcement material is described by the classic Prandtl diagram with the same yield strength in tension and compression.In most cases, the ultimate equilibrium of the cross-section is based o

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Petrov, Anatoliy, Andriy Paliy, Artem Naumenko, et al. "Improving the algorithm of choosing spacing and number of stiff supports against a concentrated force in steel-concrete beams." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 40–47. http://dx.doi.org/10.15587/1729-4061.2021.228862.

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A steel-concrete beam was taken as the study object. The algorithm of selecting the number of stiff supports for the steel-concrete beam loaded with a concentrated lateral force in the middle of the span has been refined. Stiff supports served to join the steel strip with concrete to ensure their joint performance. The algorithm was refined based on the condition of equality of the longitudinal force in the steel strip from the action of the calculated load and the maximum longitudinal force obtained after setting the supports. In this case, the longitudinal forces in all stiff supports, as we

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Anatoliy, Petrov, Paliy Andriy, Naumenko Artem, et al. "Improving the algorithm of choosing spacing and number of stiff supports against a concentrated force in steel-concrete beams." Eastern-European Journal of Enterprise Technologies 2, no. 7 (110) (2021): 40–47. https://doi.org/10.15587/1729-4061.2021.228862.

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A steel-concrete beam was taken as the study object. The algorithm of selecting the number of stiff supports for the steel-concrete beam loaded with a concentrated lateral force in the middle of the span has been refined. Stiff supports served to join the steel strip with concrete to ensure their joint performance. The algorithm was refined based on the condition of equality of the longitudinal force in the steel strip from the action of the calculated load and the maximum longitudinal force obtained after setting the supports. In this case, the longitudinal forces in all stiff supports, as we

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