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Journal articles on the topic 'Deformation trajectory'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Matviychuk, Viktor, Volodymyr Mykhalevych, and Andrii Shtuts. "ANALYSIS OF STRESS-STRAIN STATE (SSS) OF BILLET MATERIAL IN THE COURSE OF SETTING BY RESOURCE-SAVING METHOD OF ROLL STAMPING." Vibrations in engineering and technology, no. 1 (108) (May 1, 2023): 63–72. http://dx.doi.org/10.37128/2306-8744-2023-1-7.

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The processes of planting blanks by the rolling stamping method allow for the efficient production of a wide range of high-quality products, but the possibility of material destruction during deformation prevents the expansion of their technological capabilities. Further development of the processes is possible through the development of new technological schemes based on the analysis of deformation kinematics and the appointment of favorable technological parameters, taking into account their influence on the stress-strain state and deformability of the material of the workpieces. In order to

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2

Matviychuk, Viktor, Volodymyr Mykhalevych, and Andrii Shtuts. "ANALYSIS OF THE STATE OF STRESS AND DEFORMATION OF THE MATERIAL OF THE BILLET WHEN PLANTING BY THE RESOURCE-SAVING METHOD OF STAMPING BY ROLLING." ENGINEERING, ENERGY, TRANSPORT AIC, no. 1(120) (May 1, 2023): 76–85. http://dx.doi.org/10.37128/2520-6168-2023-1-9.

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The processes of planting blanks by the rolling stamping method allow for the efficient production of a wide range of high-quality products, but the possibility of material destruction during deformation prevents the expansion of their technological capabilities. Further development of the processes is possible through the development of new technological schemes based on the analysis of deformation kinematics and the appointment of favorable technological parameters, taking into account their influence on the stress-strain state and deformability of the material of the workpieces. In order to

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3

Fraichard, Thierry, and Vivien Delsart. "Navigating Dynamic Environments with Trajectory Deformation." Journal of Computing and Information Technology 17, no. 1 (2009): 27. http://dx.doi.org/10.2498/cit.1001157.

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4

Gubanova, Alexandra A. "Investigation of stationary trajectories with associated milling by spur gears." MATEC Web of Conferences 226 (2018): 02004. http://dx.doi.org/10.1051/matecconf/201822602004.

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When milling in a steady state, unlike, for example, turning, there are periodic elastic deformation displacements of the tool relative to the workpiece along the machining path. Instead of an equilibrium point, we consider a certain closed trajectory of elastic deformations. This is the trajectory to which all the trajectories approach asymptotically, while forces and deformations that mutually affect each other through the mechanism of changing the area of the cut-off layer are redistributed. The article proposes a mathematical apparatus and algorithms for calculating the trajectory of estab

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Mei, Jiangping, Fan Zhang, Jiawei Zang, Yanqin Zhao, and Han Yan. "Trajectory optimization of the 6-degrees-of-freedom high-speed parallel robot based on B-spline curve." Science Progress 103, no. 1 (2019): 003685041988011. http://dx.doi.org/10.1177/0036850419880115.

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According to the problem that the existing high-speed parallel robot cannot satisfy the operation requirements of non-planar industrial production line, a 6-degrees-of-freedom high-speed parallel robot is proposed to carry out the kinematic and dynamic analyses. Combining with the door-type trajectory commonly used by the parallel robot, it adopts 3-, 5-, and 7-time B-spline curve motion law to conduct the trajectory planning in operation space. Taking the average cumulative effect of joint jerky as the optimization target, a trajectory optimization method is proposed to improve the smoothness

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Zubchaninov, V. G., V. I. Gultyaev та A. S. Dvuzhilov. "ИССЛЕДОВАНИЕ ЛАТУНИ Л63 ПО ГЛАДКОЙ КРИВОЛИНЕЙНОЙ ТРАЕКТОРИИ ТИПА “ВЕЕР СМЕЩЕННЫХ ОКРУЖНОСТЕЙ”". Вестник Чувашского государственного педагогического университета им. И.Я. Яковлева. Серия: Механика предельного состояния, № 1(55) (6 червня 2023): 26–32. http://dx.doi.org/10.37972/chgpu.2023.55.1.004.

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The article presents the results of an experimental study of deformation of a thinwalled tubular sample along a smooth curvilinear trajectory of deformation of different curvature, in which each section of the trajectory changes the value of curvature and moves it center. The experiments were carried out on an automated calculation and experimental complex SN-EVM in the deviatoric space deformations A.A. Ilyushin (hard loading) with simultaneous combined action on a thin-walled tubular tensile-compression sample and twists. Scalar and vector material properties were subject to research brass L

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Ario, Takahiro, and Ikuo Mizuuchi. "Planning the Shortest Carrying Trajectory Including Path and Attitude Change Considering Gripping Constraints." Journal of Robotics and Mechatronics 34, no. 3 (2022): 607–14. http://dx.doi.org/10.20965/jrm.2022.p0607.

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Carrying gripped objects at high speed can lead to gripping failure owing to loads applied to the gripper by its acceleration. When carrying an object at high speed, it is important to carry it with accelerations at which gripping is maintained. Previously proposed methods generated the shortest carrying trajectory for a predetermined trajectory path. In this study, focusing on the object-carrying trajectory and the hand attitude of the gripper, we propose a method to generate the shortest carrying trajectory by varying the state quantities. The proposed method considers the gripping force and

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8

Piras, Paolo, Valerio Varano, Maxime Louis, et al. "Transporting Deformations of Face Emotions in the Shape Spaces: A Comparison of Different Approaches." Journal of Mathematical Imaging and Vision 63, no. 7 (2021): 875–93. http://dx.doi.org/10.1007/s10851-021-01030-6.

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AbstractStudying the changes of shape is a common concern in many scientific fields. We address here two problems: (1) quantifying the deformation between two given shapes and (2) transporting this deformation to morph a third shape. These operations can be done with or without point correspondence, depending on the availability of a surface matching algorithm, and on the type of mathematical procedure adopted. In computer vision, the re-targeting of emotions mapped on faces is a common application. We contrast here four different methods used for transporting the deformation toward a target o

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9

Wang, Hao, Junwu Hong, Dehong Meng, Wei Li, and Hao Yue. "Numerical simulation of the effect of elastic deformation on the fairing separation process." Journal of Physics: Conference Series 2599, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1742-6596/2599/1/012007.

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Abstract In view of the potential impact of structural deformation on the separation safety of elastic fairing at low altitude and high speed, the aerodynamic/deformation/motion coupling analysis method is established. The numerical simulation of the separation process of the fairing considering elastic deformation after disengaging is carried out. The motion characteristics and structural response characteristics of the elastic fairing in the separation process are obtained. Moreover, the impact of elastic deformation on the attitude and trajectory of the fairing is studied. The results indic

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10

Li, Huifang, and Dariusz Ceglarek. "Optimal Trajectory Planning For Material Handling of Compliant Sheet Metal Parts." Journal of Mechanical Design 124, no. 2 (2002): 213–22. http://dx.doi.org/10.1115/1.1463035.

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One of the most critical issues in the material handling of compliant objects is excessive part deformation. The deformation of compliant sheet metal parts during the handling process can significantly impact both part dimensional quality and production rate. Increasing production rate while maintaining part quality requires an optimal design of the part transfer trajectory. This paper describes a new methodology of time-optimal trajectory planning for compliant parts by discretizing the part transfer path into N segments that have equal horizontal distance and by approximating the trajectory

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11

Young Sung Ghim and John H. Seinfeld. "Trajectory models and the deformation of air parcels." Atmospheric Environment (1967) 22, no. 1 (1988): 25–29. http://dx.doi.org/10.1016/0004-6981(88)90296-x.

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12

Shin, J., T. W. Cornelius, S. Labat, et al. "In situ Bragg coherent X-ray diffraction during tensile testing of an individual Au nanowire." Journal of Applied Crystallography 51, no. 3 (2018): 781–88. http://dx.doi.org/10.1107/s1600576718004910.

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Systematic tensile tests were performed on single defect-free 〈110〉 Au nanowires grown by physical vapor deposition while simultaneously recording three-dimensional Bragg peaks using coherent X-rays. The trajectory of three-dimensional Bragg peaks in reciprocal space during tensile testing allowed for measurements of the evolution of strains and rotations of the nanowire, thus sensitively uncovering the full deformation geometry of the nanowire. The transition from elastic to plastic deformation is accompanied by rotations of the nanowire as quantified by analysis of the motion of Bragg peaks,

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Grozav, Sorin Dumitru, Vasile Adrian Ceclan, Antoniu Turcu, and Ovidiu Vasile Oprea. "Kinematic Process Plastic Cold Orbital Forming." Applied Mechanics and Materials 808 (November 2015): 98–103. http://dx.doi.org/10.4028/www.scientific.net/amm.808.98.

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In the paper before you, the authors study the kinematics of the orbital deformation process on the base of the trajectory equation of the mobile element of the machine. Also, the authors show that the trajectory is a closed cycle curve with a finite number of lobes. Relations and charts are presented for the calculation of the number of lobes and their width depending on the machine setting. The upper mold half trajectory choice (active tool) to match the best part deformed kinematics requires detailed knowledge of orbital plastic deformation process, something which develops in the present p

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Jiang, Shan, Zhiliang Su, Zhiyong Yang, Jun Liu, and Zhenxing Liu. "THE POTENTIAL FIELD-BASED TRAJECTORY PLANNING FOR NEEDLE INSERTION IN A SOFT-TISSUE MODEL." Biomedical Engineering: Applications, Basis and Communications 25, no. 01 (2013): 1350017. http://dx.doi.org/10.4015/s1016237213500178.

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This paper presents a 3D dynamic trajectory planning method for the insertion of a rigid needle into soft tissue. The optimal needle tip orientation was calculated in which applying an artificial potential field method to determine the 3D distribution of repulsive and attractive forces surrounding the target object and adjacent obstacles, e.g. bones, nerves, or arteries. Soft-tissue deformation occurs dynamically and continuously during the needle insertion. The trajectory planning was therefore temporally discretized, and the compartment searching method used in each time step. This trajector

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15

Pan, Yan Hong. "Numerical Simulation of the Basketball Flight Trajectory Based on FLUENT Fluid Solid Coupling Mechanics." Applied Mechanics and Materials 651-653 (September 2014): 2347–51. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.2347.

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The calculation of basketball trajectory involves the elastic-plastic mechanics and aerodynamics theory. Besides the deformation of basketball flight, the flight is a complex fluid solid coupling process. If wanting to simulate the flight trajectory of basketball accurately, it must consider the effect of flow field and solid fluid solid coupling field. In order to calculate the flight trajectory of basketball accurately and improve basketball shooting speed and posture training efficiency in the training process, this paper uses the FLUENT to simulate the basketball flight trajectory. Combine

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16

Yaroshenko, Leonid, Mykola Kolisnyk, Andrii Shtuts, and Yurii Prysiazhniuk. "ASSESSMENT OF MATERIAL DEFORMATION RESISTANCE IN BLANKS DURING DIRECT EXTRUSION USING THE DIE FORMING METHOD." Vibrations in engineering and technology, no. 4(111) (December 2, 2023): 54–67. http://dx.doi.org/10.37128/2306-8744-2023-4-8.

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In this scientific article, two deformation models for analyzing the accumulation of material damage during upsetting and direct extrusion using the die forming method are investigated. Both models include an analytical representation of the deformation trajectory, approximation of the boundary deformation curve, and a damage accumulation model. A three-parameter representation of the boundary deformation curve is applied, utilizing a power-law model and a linear damage accumulation model. The process of direct extrusion is examined by constructing parametric equations for the deformation traj

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17

Zhang, Jun. "Study on Dynamics Model of Solid Trajectory Analysis and Pneumatics Based on Space-Time Four-Dimensional Data." Applied Mechanics and Materials 556-562 (May 2014): 3856–59. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.3856.

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In this paper we use elastic-plastic mechanics and air dynamic to establish the mathematical model of badminton flight trajectory and deformation, and use the ANSYS software to do simulation on badminton flight process, and obtain the flight path and deformation of badminton. In order to analyze the badminton four-dimensional space-time data, we establish the one-dimensional time measurement, and use one-dimensional time transient stress to establish flight trajectory and deformation, and design the four-dimensional space-time steady-state simulation process. Through calculation we eventually

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18

AGAYEV, Agasi, and Govhar ABBASOVA. "INCREASING THE ACCURACY OF PROCESSING PARTS ON CNC LATHES." Machine Science Journal 4, no. 1 (2024): 66–73. http://dx.doi.org/10.61413/nyxb4393.

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The article examines the effect of the movement trajectory of the cutting tool on the longitudinal cross-sectional accuracy of the details processed on digitally controlled (DC) lathes. Opportunities to improve the accuracy of details are analyzed. The article investigates the influence of the trajectory of the cutting tool on the accuracy of the longitudinal section of parts processed on lathes with computer numerical control (CNC). The possibilities of increasing the accuracy of parts are analyzed. The article describes a method for calculating the trajectory of a turning tool on a machine w

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19

Pham, Quang-Cuong, and Yoshihiko Nakamura. "A New Trajectory Deformation Algorithm Based on Affine Transformations." IEEE Transactions on Robotics 31, no. 4 (2015): 1054–63. http://dx.doi.org/10.1109/tro.2015.2450413.

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20

Ni, Jinlu, Jiangping Mei, and Weizhong Hu. "A hierarchical approach for rigid-body dynamics model simplification of a high-speed parallel robot by considering kinematics performance." Science Progress 104, no. 4 (2021): 003685042110630. http://dx.doi.org/10.1177/00368504211063072.

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Considering the real-time control of a high-speed parallel robot, a concise and precise dynamics model is essential for the design of the dynamics controller. However, the complete rigid-body dynamics model of parallel robots is too complex for online calculation. Therefore, a hierarchical approach for dynamics model simplification, which considers the kinematics performance, is proposed in this paper. Firstly, considering the motion smoothness of the end-effector, trajectory planning based on the workspace discretization is carried out. Then, the effects of the trajectory parameters and accel

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Jamaladdin, Nuraddin Aslanov, Malik Abasova Sevinc, and Seydi Huseynli Zenfira. "THE MANAGEMENT OF CHARACTERISTICS OF THE NEW TWO-LAYER RUBBER MATRIX SEALS." EUREKA: Physics and Engineering, no. 5 (September 30, 2020): 60–68. https://doi.org/10.21303/2461-4262.2020.001401.

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Rubber seals for closing devices operating in cold climates degrade quickly in aggressive environments at very low temperatures. As a result, leaks and failures occur in the closure devices. Therefore, there is a great need to develop a new model of rubber seals and develop their scientific basis. The article is devoted to increasing the sealing effect of rubber seals of machines and equipment, including closures, by introducing the anisotropy of the rubber matrix into its structure with control of the characteristics of hard closures obtained from rubber. For this purpose, new models of the g

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22

Proskokov, A. V., A. V. Filippov, and V. V. Gorbatenko. "Experimental Study of Plastic Deformation Intensity in Cutting Zone." Applied Mechanics and Materials 770 (June 2015): 200–204. http://dx.doi.org/10.4028/www.scientific.net/amm.770.200.

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The paper considers the intensity degree of a plastic shear deformation ei when cutting, the results of experimental studies that determine a travel trajectory of a cutting material layer through a plastic deformation zone in a chipping area and comparative analysis of deformation conditions of a sample material machined by various tool rake angles (γ=0o and γ=15o).

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Aslanov, Jamaladdin Nuraddin, Sevinc Malik Abasova, and Zenfira Seydi Huseynli. "THE MANAGEMENT OF CHARACTERISTICS OF THE NEW TWO-LAYER RUBBER MATRIX SEALS." EUREKA: Physics and Engineering 5 (September 30, 2020): 60–68. http://dx.doi.org/10.21303/2461-4262.2020.001401.

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Rubber seals for closing devices operating in cold climates degrade quickly in aggressive environments at very low temperatures. As a result, leaks and failures occur in the closure devices. Therefore, there is a great need to develop a new model of rubber seals and develop their scientific basis. The article is devoted to increasing the sealing effect of rubber seals of machines and equipment, including closures, by introducing the anisotropy of the rubber matrix into its structure with control of the characteristics of hard closures obtained from rubber. For this purpose, new models of the g

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24

Aksamit, Nikolas O., Randall K. Scharien, Jennifer K. Hutchings, and Jennifer V. Lukovich. "A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics." Cryosphere 17, no. 4 (2023): 1545–66. http://dx.doi.org/10.5194/tc-17-1545-2023.

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Abstract. Sea ice drift and deformation, namely sea ice dynamics, play a significant role in atmosphere–ice–ocean coupling. Deformation patterns in sea ice can be observed over a wide range of spatial and temporal scales, though high-resolution objective quantification of these features remains difficult. In an effort to better understand local deformation of sea ice, we adapt the trajectory-stretching exponents (TSEs), quasi-objective measures of Lagrangian stretching in continuous media, to sea ice buoy data and develop a temporal analysis of TSE time series. Our work expands on previous oce

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25

Zubchaninov, V. G., A. A. Alekseev, and V. I. Gultiaev. "The effect of replacing non-analytic trajectories with break points on smooth paths to the complexity of deformation and loading processes of materials." PNRPU Mechanics Bulletin, no. 2 (December 15, 2020): 52–63. http://dx.doi.org/10.15593/perm.mech/2020.2.05.

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This article is devoted to an experimental study of the effect of rounding off corner points of two-link strain trajectories on complex loading processes during elastoplastic deformation of materials. Replacing corner points in their vicinity with local sections of circles allows a nonanalytic trajectory to be replaced with a smooth trajectory. Experimental studies were performed on thin-walled tubular specimens of the low-carbon steel St3 on an SN-EVM automated testing system. The loading programs for tubular specimens were set in the Ilyushin's deviatoric strain space. The rounding of the co

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Fang, Qiang, Weidong Chen, Anan Zhao, Changxi Deng, and Shaohua Fei. "Control system designing for correcting wing–fuselage assembly deformation of a large aircraft." Assembly Automation 37, no. 1 (2017): 22–33. http://dx.doi.org/10.1108/aa-01-2016-006.

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Purpose In aircraft wing–fuselage assembly, the distributed multi-point support layout of positioners causes fuselage to deform under gravity load, leading to assembly difficulty and assembly stress. This paper aims to propose a hybrid force position control method to balance aerodynamic shape accuracy and deformation of assembly area, thereby correcting assembly deformation and reducing assembly stress. Design/methodology/approach Force and position control axes of positioners are selected based on screw theory and ellipsoid method. The position-control axes follow the posture trajectory to a

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27

Polyakov, V. A. "Automation of the Algorithm for Designing a Reinforcement Scheme for a Structure Made of Composite Materials." LETI Transactions on Electrical Engineering & Computer Science 15, no. 7 (2022): 14–19. http://dx.doi.org/10.32603/2071-8985-2022-15-7-14-19.

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The paper considers the development and automation of an algorithm for designing a reinforcement scheme based on bending deformation. The algorithm is presented in the form of a block diagram. When searching for a reinforcement trajectory, the algorithm takes into account the specified criteria for searching and designing a scheme. On the basis of the algorithm, a program is developed that can operate with the data of the model under study, use them to construct and synthesize the reinforcement trajectory. The program code is based on a simple example – bending deformation. The stress-strain s

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Abbas, Laith K., Dongyang Chen, and Xiaoting Rui. "Numerical Calculation of Effect of Elastic Deformation on Aerodynamic Characteristics of a Rocket." International Journal of Aerospace Engineering 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/478534.

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The application and workflow of Computational Fluid Dynamics (CFD)/Computational Structure Dynamics (CSD) on solving the static aeroelastic problem of a slender rocket are introduced. To predict static aeroelastic behavior accurately, two-way coupling and inertia relief methods are used to calculate the static deformations and aerodynamic characteristics of the deformed rocket. The aerodynamic coefficients of rigid rocket are computed firstly and compared with the experimental data, which verified the accuracy of CFD output. The results of the analysis for elastic rocket in the nonspinning and

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29

Kondratev, N. S., P. V. Trusov, and A. N. Podsedertsev. "MULTILEVEL PHYSICAL-ORIENTED MODEL: APPLICATION TO THE DESCRIPTION OF THE INITIAL STAGE OF DYNAMIC RECRYSTALLIZATION OF POLYCRYSTALS." Problems of Strength and Plasticity 83, no. 4 (2021): 451–61. http://dx.doi.org/10.32326/1814-9146-2021-83-4-451-461.

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Thermomechanical processing of metals and alloys is accompanied by deep changes of the material structure (including grain structure), which determines physical and mechanical properties and the working characteristics of products made from them. Its change is possible due to mechanical (fragmentation process) and/or temperature (recrystallization process) influences. Because of this, an urgent task is to create mathematical models that allow describing changes in the material structure and the stress-strain state under thermomechanical treatment. For this purpose, the multilevel physically or

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30

Hua, RuHao, ChengXi Zhao, ZhengYin Ye, and YueWen Jiang. "Effect of elastic deformation on the trajectory of aerial separation." Aerospace Science and Technology 45 (September 2015): 128–39. http://dx.doi.org/10.1016/j.ast.2015.04.015.

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Hu, Xian Ming, E. Chuan Yan, Kun Lv, and Ting Ting Zhang. "Fractal Characteristics of Motion Trace Curve of Landslide Monitoring Points." Applied Mechanics and Materials 90-93 (September 2011): 1285–90. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.1285.

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According to the analysis of the landslide monitoring data, it is revealed that the amount of the cumulative displacement of the landslide depends on the monitoring cycle. And the trajectory curve of monitoring point has the fractal characteristics. The fractal dimension of the landslide internal points’ movement direction is various with the landslide development, which is decreased from the generation to the deformation and then to the damage. Meanwhile, based on the fractal boxing counting theorem, the program in Matlab is created to calculate the box dimension of the curve. Take a reviving

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Qu, Liang, Peng Wang, and Hao He. "Research on Trajectory Planning Method for Variable Sweep Back Aircraft with No Fly Zone Margin." Advances in Engineering Technology Research 10, no. 1 (2024): 276. http://dx.doi.org/10.56028/aetr.10.1.276.2024.

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For a high-speed variable sweep aircraft, the variation characteristics of lift coefficient and drag coefficient with angle of attack were analyzed. Based on the analyzed aerodynamic characteristics, an aerodynamic parameter calculation model was established with Mach number, angle of attack, and deformation rate as independent variables. A no fly zone avoidance strategy with a no fly zone margin is proposed to address the issue of some inter point trajectories not meeting the constraints of the no fly zone when using the pseudospectral method for trajectory design. Its effectiveness is verifi

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Zhou, Jie, Yao Sun, Laibin Luo, Wenxin Zhang, and Zhe Wei. "Human–Robot Cooperation Control Strategy Design Based on Trajectory Deformation Algorithm and Dynamic Movement Primitives for Lower Limb Rehabilitation Robots." Processes 12, no. 5 (2024): 924. http://dx.doi.org/10.3390/pr12050924.

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Compliant physical interactions, interactive learning, and robust position control are crucial to improving the effectiveness and safety of rehabilitation robots. This paper proposes a human–robot cooperation control strategy (HRCCS) for lower limb rehabilitation robots. The high-level trajectory planner of the HRCCS consists of a trajectory generator, a trajectory learner, a desired trajectory predictor, and a soft saturation function. The trajectory planner can predict and generate a smooth desired trajectory through physical human–robot interaction (pHRI) in a restricted joint space and can

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34

Oka, M., H. Kamisaka, T. Fukumura, and T. Hasegawa. "DFT-based ab initio MD simulation of the ionic conduction in doped ZrO2 systems under epitaxial strain." Physical Chemistry Chemical Physics 17, no. 43 (2015): 29057–63. http://dx.doi.org/10.1039/c5cp03238e.

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Tao, Guanghong, Yan Li, Fen Wang, Wenlong Pan, and Guoqiang Cao. "Rigid–Flexible Coupled Dynamics Modeling and Trajectory Compensation for Overhead Line Mobile Robots." Aerospace 12, no. 5 (2025): 378. https://doi.org/10.3390/aerospace12050378.

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When a mobile robot on an overhead line carries out operations, the effects of the elastic deformation and vibration of the flexible overhead line on motion performance cannot be ignored. This study proposes a method for active compensation of the robot’s trajectory, based on the force–deformation characteristics of the overhead line. Overhead line mobile robot systems show a complex nonlinear coupled vibration problem. To simplify the flexible environment, it is modeled as a single-degree-of-freedom spring–damped system. A rigid–flexible coupled dynamics model is established using the sub-bar

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36

Garanikov, V. V., and E. O. Kornilev. "RESEARCH OF THE PATTERNS OF DEFORMATION ALONG CURVILINEAR TRAJECTORIES OF CONSTANT CURVATURE WITH A CHANGING PROCESS DIRECTION." Bulletin of the Tver State Technical University. Series «Building. Electrical engineering and chemical technology», no. 3 (2020): 17–24. http://dx.doi.org/10.46573/2658-7459-2020-3-17-24.

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Abstract. An experimental study of the vector and scalar properties was carried out when changing the direction of deformation on samples made of 9X2 steel. It is shown that after the exhaustion of a certain interval of the trajectory lengths, scalar and vector properties seem to forget the change in the direction of deformation and correspond to the trajectories without changing the direction.

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Гультяев, Вадим Иванович, Владимир Георгиевич Зубчанинов, Андрей Алексеевич Алексеев, and Иван Александрович Саврасов. "Experimental investigation of steel 45 along some smooth curvilinear strain trajectory." Вестник Чувашского государственного педагогического университета им. И.Я. Яковлева. Серия: Механика предельного состояния, no. 3(49) (December 29, 2021): 33–41. http://dx.doi.org/10.37972/chgpu.2021.49.3.004.

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В работе представлены экспериментальные результаты деформирования тонкостенного трубчатого образца по гладкой криволинейной траектории деформирования постоянной кривизны, в которой на каждом участке изменяется знак кривизны и смещается ее центр. Экспериментальное исследование выполнено на автоматизированном расчетноэкспериментальном комплексе СН-ЭВМ в девиаторном пространстве деформаций А.А. Ильюшина (жесткое нагружение) при одновременном комбинированном действии на тонкостенный трубчатый образец растяжения-сжатия и кручения. Исследованы скалярные и векторные свойства материала стать 45. Показ

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MALOLETOV, A. V., and T. R. SATDAROV. "MODELING OF DOUBLE-SIDED ROBOTIZED INCREMENTAL FORMING." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY 9 (292) (September 2024): 46–51. http://dx.doi.org/10.35211/1990-5297-2024-9-292-46-51.

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The problem of incremental forming is considered as a problem of creating local stresses in the workpiece material corresponding to the yield strength for this material and the subsequent movement of the tool that provides deformation of the material in the required direction. The paper describes the modeling of the stresses arising from single-sided and double-sided incremental forming. The computer model includes a workpiece and one or two rods. The rods move along their axes during the modeling process, creating pressure on the workpiece material, as well as along a trajectory that ensures

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Гультяев, В. И., А. А. Алексеев, А. Н. Широков, and А. Н. Булгаков. "Experimental study of steel 45 material during deformation according to displaced fan programs." Вестник Чувашского государственного педагогического университета им. И.Я. Яковлева. Серия: Механика предельного состояния, no. 2(56) (December 26, 2023): 88–98. http://dx.doi.org/10.37972/chgpu.2023.56.2.009.

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В статье приведены результаты экспериментального исследования напряженно деформированного состояния цилиндрических оболочек при реализации программ по типу смещенного веера в пространстве деформаций и описана необходимость их проведения. Показано, как величина угла излома траектории деформирования влияет на глубину “нырка” пассивной деформации при частичном упругом разгружении материала. Статья направлена на расширение знаний о напряженно-деформируемом состоянии материалов, используемых в гражданской, машиностроительной, аэрокосмической, ядерной, биомедицинской и многих других отраслях. The ar

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Chen, Guang Feng, Qing Qing Huang, Lin Lin Zhai, and Qing Qing Li. "Elastic Rod Based Carpet Loop Pile Trajectory Simulation." Advanced Materials Research 680 (April 2013): 392–97. http://dx.doi.org/10.4028/www.scientific.net/amr.680.392.

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The 3D simulation of tufted carpet pile loops need to calculate the direction loop pile. By simplifying the tufted carpet yarn into elongated elastic rod, without considering the extrusion between loops piles, applying pressure at both ends of loop pile. By analyzing the elastic rod stress deformation and using Matlab simulate to determine the yarn centerline direction with the flexible line. The simulation results show that the obtained yarn centerline path is consistent with the trend of actual loop pile.

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Bondar, V. S., D. R. Abashev, and D. Ju Fomin. "Theories of plasticity under complex loading along spatial trajectories of deformations." PNRPU Mechanics Bulletin, no. 4 (December 15, 2021): 41–48. http://dx.doi.org/10.15593/perm.mech/2021.4.05.

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Variants of theories of plastic flow with combined hardening, which are widely used in practical calculations of structures, are considered. A comparative analysis of variants of the theory under complex loading along the spatial trajectories of deformations of constant and variable curvature and torsion is carried out. The trajectories of large curvature and from medium to large torsion are considered. The analysis of the research results is carried out in the vector space of A.A. Il’yushin. The spatial trajectories of deformations in the form of helical lines of constant and variable curvatu

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Wu, Li Ming, Si Cheng Chen, Yao Hua Deng, Fu Jian Li, and Bing Jing Li. "Research of Processing Deformation Compensation of Flexible Leather Material Based on Knowledge Management." Advanced Materials Research 912-914 (April 2014): 1681–84. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1681.

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Leather is a common processing material with poor rigidity in shoe manufacturing, there is easy to generate tensile or compress deformation, so reducing the processing quality. Considering the reasons of leather processing deformation, there are flexible material variety, different material thickness and complicated processing path. The article discussing the various impact factors of leather cutting deformation, combined with the theory and method of processing decision knowledge acquisition, processing knowledge management, and closed-loop compensation control, to propose a deformation compe

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Ni, Bao-yu, A.-man Zhang, Xiong-liang Yao, and Bin Wang. "Numerical simulation of trajectory and deformation of bubble in tip vortex." Applied Mathematics and Mechanics 33, no. 6 (2012): 701–16. http://dx.doi.org/10.1007/s10483-012-1581-9.

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Samul, A. G. "Kinematic characteristics of ultrasonic surface treatment." iPolytech Journal 26, no. 1 (2022): 24–34. http://dx.doi.org/10.21285/1814-3520-2022-1-24-34.

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We investigate the kinematic characteristics of ultrasonic surface-plastic deformation when the oscillations are introduced in the direction tangential to the treated surface in order to assess the potential of this method for treating parts made of metals and alloys of various hardness. The kinematic parameters (trajectory, velocity, acceleration) of ultrasonic surface-plastic deformation were calculated in a rectangular coordinate system. Analytical dependencies were obtained for the trajectory length, resulting velocity, and acceleration as functions of the constituent types of motion (rota

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Tay, Wee-Beng, Woei-Leong Chan, Ren-Ooi Chong, and Jonathan Tay Chien-Ming. "Framework for Numerical 6DOF Simulation with Focus on a Wing Deforming UAV in Perch Landing." Aerospace 11, no. 8 (2024): 657. http://dx.doi.org/10.3390/aerospace11080657.

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The perch landing maneuver of a wing-deforming unmanned aerial vehicle (UAV) was investigated through a framework that uses the free, open-source OpenFOAM with 6 degrees of freedom (6DOF) simulations. The framework uses a moving grid to follow the trajectory of the UAV, reducing computational resources. Together with the ability to allow internal grid deformation, sliding mesh, and algorithm addition, it can accurately mimic the entire landing process. Different wing deformation speeds, additional elevator rotation and emulated propeller lift were added to the 6DOF simulations to investigate t

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Hasani, A., L. S. Toth, and Sh Mardokh Rouhani. "A New Flow Line Function for Modeling Material Trajectory and Textures in Nonequal-Channel Angular Pressing." Advances in Materials Science and Engineering 2019 (January 9, 2019): 1–6. http://dx.doi.org/10.1155/2019/5682585.

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One of the most applied severe plastic deformation processes is ECAP (equal-channel angular pressing) which is suitable to produce ultrafine-grained metallic materials with high mechanical performance. A variant of the ECAP process was proposed in 2009, which consists in reducing the diameter of the exit channel of the die; it is named the nonequal-channel angular pressing (NECAP) process. A flow line function was also proposed to describe the material flow and the deformation field during NECAP. In the present work, an improved version of that flow function is presented containing two additio

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Tang, Lu Xin, Bin Bin, and Kun Han. "The FNN Quilting Process Deformation Prediction Model." Applied Mechanics and Materials 34-35 (October 2010): 306–10. http://dx.doi.org/10.4028/www.scientific.net/amm.34-35.306.

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It is easy to have deformation that non-rigid materials is on high-speed processing, so this paper introduces the fuzzy neural networks combine with computer vision measurement technology to control this process. Based on the traditional PID control, increasing a fuzzy neural network predictor for pre-processing of trajectory compensation. Established a fuzzy neural network deformation prediction model of the single needle quilting, and simulated. Experimental and simulation results show that: error compensation which based on fuzzy neural network, have a good real-time, allow fast and accurat

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Yang, Mingshun, Zimeng Yao, Yan Li, Pengyang Li, Fengkui Cui, and Lang Bai. "Study on Thickness Thinning Ratio of the Forming Parts in Single Point Incremental Forming Process." Advances in Materials Science and Engineering 2018 (June 24, 2018): 1–11. http://dx.doi.org/10.1155/2018/2927189.

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An excessive thickness-reducing ratio of the deformation zone in single point incremental forming of the metal sheet process has an important influence on the forming limit. Prediction of the deformation zone thickness is an important approach to control the thinning ratio. Taking the 1060 aluminum as the research object, the principle of thickness deformation in the single point incremental forming process was analyzed; the finite element model was established using ABAQUS. A formula with high accuracy to predict the deformation zone thickness was fitted with the simulation results, and the i

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Zhang, Yongquan, Huiming Tang, Guiying Lu, et al. "Design and Testing of Inertial System for Landslide Displacement Distribution Measurement." Sensors 20, no. 24 (2020): 7154. http://dx.doi.org/10.3390/s20247154.

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Landslide displacement monitoring plays a fundamental role in the study of landslide evolution mechanisms, forecasting, risk assessment, prevention, and control. To fill the deficiencies of traditional instrumentation for measuring landslide displacement distributed along lateral direction, a landslide displacement measurement method based on deformation-coupled pipeline trajectory measurement is proposed, and a pipeline trajectory inertial measurement instrument is developed. The developed instrument, primarily comprised of a single shaft gyro, two axis accelerometers, and an external roller

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SUVOROV, Alexandr A., and Valery B. FILATOV. "ANALYTICAL DESCRIPTION OF THE INCLINED CRACK TRAJECTORY BY THE METHOD OF NONLINEAR DEFORMATION MODEL." Urban construction and architecture 7, no. 3 (2017): 14–18. http://dx.doi.org/10.17673/vestnik.2017.03.3.

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The article proposes an analytical solution to determine the trajectory of inclined crack with the use of nonlinear deformation model in the area of the transverse bending of a reinforced concrete beam. The use of nonlinear deformation model for the analysis of stress-strain state of the beam in the zone of the transverse bending allows to determine the coordinates of the inclined crack trajectory, the position of its vertex, and the angle of inclination to the longitudinal axis of the beam. It is then possible to move from the empirical dependences for calculating the strength of the inclined

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