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Journal articles on the topic 'Channel of the body angular deflection'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Liu, Fang, and Wan Chun Chen. "Controller Design for Spinning Missile with the Actuator Limit." Advanced Materials Research 383-390 (November 2011): 45–51. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.45.

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A nonlinear two time-scale dynamic inversion controller is designed. Actuator saturation in the spinning missile will limit the control commands responses. And the periodic motion and the physical limits of the actuator’s angle and angular velocity would make the respondent pseudo fin deflection angles much different from the desired dynamics. So a kind of command shaping method which limits the fin deflection angle commands in the pseudo body coordinates before the actuator’s limiter is proposed. Meanwhile, a feedback compensation method is applied to eliminate the cross coupling between the

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2

Yevgen, Aleksandrov, Aleksandrova Tetyana, and Morhun Yaroslav. "PARAMETRIC SYNTHESIS OF THE ELECTRONIC CONTROL UNIT OF THE COURSE STABILITY SYSTEM OF THE CAR." Eastern-European Journal of Enterprise Technologies 6, no. 9 (102) (2019): 39–45. https://doi.org/10.15587/1729-4061.2019.188185.

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The problem of parametric synthesis of an electronic control unit for a brake system of a car is considered, which consists in the process of choice of values of the varied parameters of electronic CU. The selected parameters should provide the maximum margin of stability and maximum velocity of the closed-loop system of automatic control of a given direction of car movement in braking mode. This is important because modern high-velocity cars, operating in conditions of low-quality road surfaces of highways, often become objects of road traffic accidents, despite the fact that they are equippe

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3

Osaki, Roberto Barreto, Clovis Monteiro Bramante, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Pedro Henrique Souza Calefi, and Marco Antonio Hungaro Duarte. "Influence of temperature on the torsional properties of two thermally treated NiTi rotary instruments." Brazilian Dental Journal 34, no. 1 (2023): 12–18. http://dx.doi.org/10.1590/0103-6440202305094.

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Abstract This study aimed to evaluate the influence of temperature on torsional strength and angular deflection of two experimental NiTi rotary instruments manufactured from Blue and Gold thermal treatments and with identical cross-sections. A total of 40 experimental NiTi instruments 25.06 and with a triangular cross-section and manufactured from Blue and Gold thermal treatments were used (n=20). The torsional test was performed in the 3 mm from the tip of the instrument according to ISO 3630-1. The torsional test evaluated the torsional strength and angular deflection to failure at room temp

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4

Sahoo, Vineet, and Rathindranath Maiti. "Static load sharing by tooth pairs in contact in internal involute spur gearing with thin rimmed pinion." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 4 (2016): 485–99. http://dx.doi.org/10.1177/0954406215618424.

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Involute toothed internal−external standard gear sets are modeled for load-sharing by the teeth pairs in mesh along the line of contact. An analytical solution is proposed. Considering the rigid body in rotation, it is assumed that angular rotation of a gear with respect to the other gear due to deformation along the line of contact is equal. The sum of the normal loads in all tooth pairs in contacts, which equals to the total transmitted load, is considered constant. All possible deformations such as, tooth bending deflection, tooth compressive (contact) deformation, tooth foundation deflecti

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5

Chen, Jun, and Xiao Jun Ye. "Numerical Simulation of the Kinetic Energy Projectile Deflected by Targets Moving along Transverse Direction." Advanced Materials Research 989-994 (July 2014): 2787–90. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.2787.

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When the kinetic energy projectile into concrete target movement, angle of attack can affect the penetration process of ballistic performance, resulting deflection effect, thus affecting the penetration depth. For the analysis of kinetic energy projectile penetrating the lateral movement of the target deflection model, using the finite element simulation software for lateral movement of the target missile penetrates the process of numerical simulation. The results showed that: rigid lateral movement of the target missile and projectile kinetic energy projectile velocity has some deflection eff

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6

Wang, Ling, Fu Xue Zhang, Xiao Hua Song, et al. "Posture Demodulation Study on Carriers Measured by a Novel MEMS Gyroscope." Advanced Materials Research 718-720 (July 2013): 989–93. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.989.

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Non-driven structure silicon micromechanical gyroscope can sense rolling, pitching and yaw angular rate of the rotating body at the same time, which is suitable for rotating body gesture detection. But this characteristic is not suitable for non-rotating flight carrier. So this study uses micro motor to provide spin angular velocity for non-driven silicon micromechanical gyroscope, and to further generate gyroscopic effect which is sensitive to the attitude information, including rolling rate, yaw angular rate and pitch angular rate of low-speed rotating or non-rotating object. The study analy

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7

Xue, Lian, Hongxin Luo, Qianshun Diao, Fugui Yang, Jie Wang, and Zhongliang Li. "Quantitative X-ray Channel-Cut Crystal Diffraction Wavefront Metrology Using the Speckle Scanning Technique." Sensors 20, no. 22 (2020): 6660. http://dx.doi.org/10.3390/s20226660.

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A speckle-based method for the X-ray crystal diffraction wavefront measurement is implemented, and the slope errors of channel-cut crystals with different surface characteristics are measured. The method uses a speckle scanning technique generated by a scattering membrane translated using a piezo motor to infer the deflection of X-rays from the crystals. The method provides a high angular sensitivity of the channel-cut crystal slopes in both the tangential and sagittal directions. The experimental results show that the slope error of different cutting and etching processes ranges from 0.25 to

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8

Сибирякова, Татьяна Андреевна, and Konstantin A. Shishmarev. "Solution of the Problem of Submerged Body Oscillations in a Frozen Channel with Linearly Varying Ice Thickness." Izvestiya of Altai State University, no. 1(135) (April 5, 2024): 132–37. https://doi.org/10.14258/izvasu(2024)1-19.

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The paper considers the problem of hydroelastic waves generated by a submerged body undergoing vertical translational oscillations in a rectangular frozen channel of finite depth and width. The ice is modeled as a thin viscoelastic plate with its thickness varying linearly across the channel. The edges of the plate are frozen to the channel walls. The deflection of the ice cover is described within the framework of linear elasticity theory. The case of the symmetric thickness variation of the ice cover with respect to the channel's central line is studied. The liquid beneath the plate is invis

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9

Shishmarev, K. A., T. I. Khabakhpasheva, and A. A. Korobkin. "Deflection of ice cover caused by an underwater body moving in channel." Journal of Physics: Conference Series 894 (October 2017): 012109. http://dx.doi.org/10.1088/1742-6596/894/1/012109.

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10

Abbaszadeh, B., M. M. Sheikhi, M. M. Fallah, and M. Eskandarzade. "A novel equal channel angular pressing design to eliminate punch deflection and to reduce the pressing force." Materialwissenschaft und Werkstofftechnik 54, no. 3 (2023): 294–301. http://dx.doi.org/10.1002/mawe.202200123.

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11

Huang, C. X., Y. L. Gao, G. Yang, S. D. Wu, G. Y. Li, and S. X. Li. "Bulk nanocrystalline stainless steel fabricated by equal channel angular pressing." Journal of Materials Research 21, no. 7 (2006): 1687–92. http://dx.doi.org/10.1557/jmr.2006.0214.

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Bulk fully nanocrystalline grain structures were successfully obtained in ultralow carbon stainless steel by means of equal channel angular pressing at room temperature. Transmission electron microscopy (TEM) and high-resolution TEM investigations indicated that two types of nanostructures were formed: nanocrystalline strain-induced martensite (body-centered cubic structure) with a mean grain size of 74 nm and nanocrystalline austenite (face-centered cubic structure) with a size of 31 nm characterized by dense deformation twins. The results about the formation of fully nanocrystalline grain st

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12

Meyer, Lothar W., Kristin Sommer, T. Halle, and Matthias Hockauf. "Microstructure and Mechanical Properties Affecting Crack Growth Behaviour in AA6060 Produced by Equal-Channel Angular Extrusion." Materials Science Forum 584-586 (June 2008): 815–20. http://dx.doi.org/10.4028/www.scientific.net/msf.584-586.815.

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Crack growth in AA6060 after two and eight equal-channel angular extrusions (ECAE), showing a bimodal microstructure and a homogenous ultrafine-grained microstructure, respectively, are compared to the coarse grained counterpart. Furthermore, an optimized condition, obtained by combining one ECA-extrusion and a subsequent short aging treatment is included. Fatigue crack growth behaviour in the near-threshold regime and the region of stable crack growth is investigated and related to microstructural features such as grain size, grain size distribution, grain boundary characteristics and ductili

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13

Ilucová, Lucia, Ivan Saxl, Milan Svoboda, Václav Sklenička, and Petr Král. "STRUCTURE OF ECAP ALUMINIUM AFTER DIFFERENT NUMBER OF PASSES." Image Analysis & Stereology 26, no. 1 (2011): 37. http://dx.doi.org/10.5566/ias.v26.p37-43.

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The structure of high purity (99.99%) aluminium processed by equal channel angular pressing in the as pressed state after different number of passes was examined using various stereological methods. An extreme inhomogeneity and complicated anisotropy was observed along the body of rod-like specimens.

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14

MODARRES, M. "THE ANGULAR MOMENTUM DEPENDENT CALCULATION OF THE GROUND STATE ENERGY OF LIQUID 3He." Modern Physics Letters B 19, no. 30 (2005): 1793–802. http://dx.doi.org/10.1142/s0217984905009389.

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We investigate the possible angular momentum, l, dependence of the ground state energy of normal liquid 3 He . The method of lowest order constrained variational (LOCV) which includes the three-body cluster energy and normalization constraint (LOCVE) is used with angular momentum dependent two-body correlation functions. A functional minimization is performed with respect to each l-channel correlation function. It is shown that this dependence increases the binding energy of liquid 3 He by 8% with respect to calculations without angular momentum dependent correlation functions. The l=0 state h

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15

Tang, Pengcheng, Xueqi Zheng, Tianyu Ma, et al. "Terahertz Dual-Band Dual-Polarization 3-Bit Coding Metasurface for Multiple Vortex Beams Generation." Electronics 12, no. 8 (2023): 1868. http://dx.doi.org/10.3390/electronics12081868.

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Terahertz technology and vortex beams have demonstrated powerful capabilities in enhancing the channel capacity of communication systems. This work proposes a design strategy of dual-band and dual-function 3-bit coding metasurface based on beam polarization characteristics. The unit cell of the metasurface is composed of two pattern structures, which has the ability to flexibly and independently control the reflection phases of incident plane wave at two frequency bands. The metasurface designed in this work is a combination of two patterns according to the addition operation and the convoluti

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16

Smith, Frank T. "Free motion of a body in a boundary layer or channel flow." Journal of Fluid Mechanics 813 (January 17, 2017): 279–300. http://dx.doi.org/10.1017/jfm.2016.706.

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Coupling is considered between fluid flow and a freely moving body shorter than the development length in an oncoming boundary layer or channel flow but longer than the flow thickness. The body lies within the core of the flow. The coupling occurs between the inviscid-dominated displacement and the viscous–inviscid pressure, the latter acting to move the body. This interaction can be unstable. It is found however that three factors serve to stabilise the interaction as each one alters the decisive balance of angular momentum. One is a 10 % shift forward in the position of the centre of mass. T

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17

Ahmadi, F., and M. Farzin. "Finite element analysis of ultrasonic-assisted equal channel angular pressing." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 11 (2013): 1859–68. http://dx.doi.org/10.1177/0954406213514961.

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Equal channel angular pressing is one of the most prominent procedures for achieving ultra-fine grain structures among the various severe plastic deformation techniques. In this study, the effect of superimposing ultrasonic vibration on the punch during the equal channel angular pressing process was investigated by finite element model. Two different 2D plane strain models were considered in the simulations. In the first model, the die and the punch were considered as rigid bodies and in the second model, the punch was considered as an elastic body. Both models showed reduction in the forming

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18

Nobahari, H., and H. Mohammadkarimi. "Multiple-input describing function technique applied to design a single channel ON-OFF controller for a spinning flight vehicle." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 226, no. 6 (2012): 631–45. http://dx.doi.org/10.1177/0954410011414521.

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In this study, the guidance and control problem of a single-channel spinning missile is investigated. The missile utilizes a single ON-OFF actuator to drive a pair of control surfaces (e.g. elevators) and consequently to perform all required lateral maneouvers. An approximated linear response of the so-called non-rotating frame to ON-OFF input, applied to the rotating frame, is derived using the multiple-input describing function technique. It is shown that there is a relationship between the response of the non-rotating frame and that of the equivalent non-rotating body. It is also shown that

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19

Polechoński, Jacek, Agnieszka Nawrocka, Piotr Wodarski, and Rajmund Tomik. "Applicability of Smartphone for Dynamic Postural Stability Evaluation." BioMed Research International 2019 (March 20, 2019): 1–6. http://dx.doi.org/10.1155/2019/9753898.

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The purpose of this study was to determine the accuracy of smartphone’s gyroscope for dynamic postural stability among young healthy adults. The research included convenience sample of 85 healthy adults—37 women (mean age 22.1±1.6, body height 167.2±7.0) and 48 men (mean age 22.4±1.7, body height 176.1±13.8). In order to assess the accuracy of stabilometric measurement recorded by mobile phone, the raw data obtained at the same time by Sigma Balance Platform and Smartphone (SP) were correlated. Two thirty-second trials with one-minute interval break were performed (first in the frontal plane a

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20

Shantarenko, S. G., and S. V. Savinkin. "Increasing the Dynamic Characteristics of the Locomotive by Changing the Position of the End Coils of the Springs of the Body Spring Suspension." World of Transport and Transportation 21, no. 6 (2024): 40–47. http://dx.doi.org/10.30932/1992-3252-2023-21-6-5.

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The article presents the results of a study of the influence of the position of the end coils of the springs of the locomotive body spring suspension on their static deflection and on the parameters of the elastic transverse connection of the bogie with the body, which depends on angular movement of the end coils when a locomotive negotiates curves of different directions, to improve the dynamic qualities of the electric locomotive. Consideration of various options for installing body springs with the method of mathematical modelling using a computeraided design software package has resulted i

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21

О. В. Збруцький, Р. В. Карнаушенко, and О. П. Мариношенко. "DEFINITION THE STABILITY AND CONTROL DERIVATIVES IN THE LONGITUDINAL CHANNEL OF SMALL SUBSONIC UAV." MECHANICS OF GYROSCOPIC SYSTEMS, no. 26 (December 23, 2013): 55–68. http://dx.doi.org/10.20535/0203-377126201330674.

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The problems of determining the stability and control derivatives of small subsonic UAV in the longitudinal channel are solved.An approach to the stability and control derivatives determination based on the analysis results of wind tunnel investigation and analyzes conducted .To the longitudinal movement usually referred traffic aircraft where it is in the plane of symmetry of one and the same vertical plane. Thus the aerodynamic lateral force, rolling moment and yaw angles of heel and slip and angular velocity of roll and glide zero. To investigate the longitudinal motion of the aircraft (mov

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22

Pashkov, E. N., Nikita Martyushev, and Pavel G. Yurovsky. "Stationary Rotation of the Partially Liquid-Filled Unbalanced Rotor under External Friction Force Action." Advanced Materials Research 1040 (September 2014): 903–6. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.903.

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Rotor rotation with liquid layer on the chamber wall under viscoelastic action of the shaft within a planar model is examined in the article. The solution to the problem of determining the deflection of a rotating shaft with liquid filled chamber is given, which is important when designing an automatic balancing device. The issue of the cooperative motion of a solid body and liquid is considered in mathematical research. The set task is performed by applying D'Alembert's principle. The modeling results indicate that an increase in liquid’s mass in a rotor decreases its critical rotation speed;

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23

Polyakova, Veronika, Irina P. Semenova, and Ruslan Valiev. "Influence of Annealing on the Structure and Mechanical Properties of Ultrafine-Grained Alloy Ti-6Al-7Nb, Processed by Severe Plastic Deformation." Materials Science Forum 667-669 (December 2010): 943–48. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.943.

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This work is devoted to enhancement of strength and ductility of the Ti-6Al-7Nb ELI alloy, which is less harmful from medical point of view for human body in comparison to Ti-6Al-4V. It has been demonstrated that formation of an ultrafine-grained structure in the alloy with the help of equal-channel angular pressing in combination with heat and deformation treatments allows reaching high strength (UTS = 1400 MPa) and sufficient ductility (elongation 10 %).

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24

Peng, Xinshan, Lingling Qi, Zhaofeng Wang, Xiaoqing Zhou, and Chunlei Hua. "Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining." Sustainability 14, no. 16 (2022): 10068. http://dx.doi.org/10.3390/su141610068.

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The occurrence of a steeply inclined coal seam is extraordinary, and the coal body is seriously damaged by extrusion. The most steeply inclined coal seam is a high-gas or -outburst coal seam, and protective layer mining is the safest and most effective measure for regional prevention of coal and gas outburst. Based on considering the coefficient of lateral pressure and vertical height of the section, the deflection of the basic roof of the steeply inclined protective layer in a mine in western Henan, China, was calculated using the deflection calculation method of the thin-plate theory of elas

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25

Fan, Yonghua, Pengpeng Yan, Hongyang Xu, and Fan Wang. "Lateral control strategy for a hypersonic cruise missile." International Journal of Advanced Robotic Systems 14, no. 2 (2017): 172988141769914. http://dx.doi.org/10.1177/1729881417699147.

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Hypersonic cruise missile always adopts the configuration of waverider body with the restraint of scramjet. As a result, the lateral motion exhibits serious coupling, and the controller design of the lateral lateral system cannot be conducted separately for yaw channel and roll channel. A multiple input and multiple output optimal control method with integrators is presented to design the lateral combined control system for hypersonic cruise missile. A hypersonic cruise missile lateral model is linearized as a multiple input and multiple output plant, which is coupled by kinematics and fin def

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26

Pang, Hui, Ying Chen, JiaNan Chen, and Xue Liu. "Design of LQG Controller for Active Suspension without Considering Road Input Signals." Shock and Vibration 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/6573567.

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As the road conditions are completely unknown in the design of a suspension controller, an improved linear quadratic and Gaussian distributed (LQG) controller is proposed for active suspension system without considering road input signals. The main purpose is to optimize the vehicle body acceleration, pitching angular acceleration, displacement of suspension system, and tire dynamic deflection comprehensively. Meanwhile, it will extend the applicability of the LQG controller. Firstly, the half-vehicle and road input mathematical models of an active suspension system are established, with the w

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27

Marzouk, Osama A. "Coupled differential-algebraic equations framework for modeling six-degree-of-freedom flight dynamics of asymmetric fixed-wing aircraft." International Journal of ADVANCED AND APPLIED SCIENCES 12, no. 1 (2025): 30–51. https://doi.org/10.21833/ijaas.2025.01.004.

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This study presents a comprehensive mathematical framework for modeling the flight dynamics of a six-degree-of-freedom fixed-wing aircraft as a rigid body with three control surfaces: rudder, elevators, and ailerons. The framework consists of 35 differential-algebraic equations (DAEs) and requires 30 constants to be specified. It supports both direct and inverse flight dynamics analyses. In direct dynamics, the historical profiles of control inputs (deflection angles and engine thrust) are specified, and the resulting flight trajectory is predicted. In inverse dynamics, the desired flight traj

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28

Singh, K., and T. J. Pedley. "Modelling lateral manoeuvres in fish." Journal of Fluid Mechanics 697 (March 7, 2012): 1–34. http://dx.doi.org/10.1017/jfm.2012.1.

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AbstractWe propose a method to model manoeuvres in self-propelled flexible-bodied fish by modelling the hydrodynamics coupled to the body inertia. Flexible body motion is prescribed and the equations of motion are solved for the position of the centre of mass and rotation of the body. The governing equations are formulated by applying the conservation of linear and angular momentum. Two independent methods to model the fluid dynamics are pursued: Model 1 is an extension of elongated-body theory, modified for self-propulsion and flexible motion. Model 2 applies a numerical boundary-element form

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29

Almeida, Alexander, George Andrews, Devina Jaiswal, and Kazunori Hoshino. "The Actuation Mechanism of 3D Printed Flexure-Based Robotic Microtweezers." Micromachines 10, no. 7 (2019): 470. http://dx.doi.org/10.3390/mi10070470.

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We report on the design and the modeling of a three-dimensional (3D) printed flexure-based actuation mechanism for robotic microtweezers, the main body of which is a single piece of nylon. Our design aims to fill a void in sample manipulation between two classes of widely used instruments: nano-scale and macro-scale robotic manipulators. The key component is a uniquely designed cam flexure system, which linearly translates the bending of a piezoelectric bimorph actuator into angular displacement. The 3D printing made it possible to realize the fabrication of the cam with a specifically calcula

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30

Zhou, Juping, Wei Han, Rennian Li, Xiaoning Ma, Haojie Wang, and Wangxu Li. "Flow Control in Multiphase Pumps Based on Separated Trailing Edge Flap." Processes 11, no. 11 (2023): 3066. http://dx.doi.org/10.3390/pr11113066.

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In developing and transporting significant oil fields in deep-sea environments, multiphase pumps are considered crucial energy conversion equipment. Ensuring their safe, efficient, and stable operation is currently a primary focus of research. The intermittent aggregation of the gas phase at the trailing edge flap of the impeller blades in multiphase pumps can lead to periodic and significant fluctuations in flow rate and outlet pressure, posing a threat to the overall operational safety of the pump system. Based on aerodynamic principles, this paper presents the design of a separate trailing

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31

Baghi, Babak, Mansour Kabganian, Reza Nadafi, and Ehsan Arabi. "Three-axis attitude stabilization of a flexible satellite using non-linear PD controller." Transactions of the Institute of Measurement and Control 40, no. 2 (2016): 591–605. http://dx.doi.org/10.1177/0142331216663616.

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In this paper, after complete modelling of a flexible satellite equipped with a control moment gyroscope (CMG) actuator, it is shown that a PD-like controller can globally asymptotically stabilize this satellite by using Lyapunov’s direct method. Despite the simplicity, simulations show that the controller can stabilize the flexible satellite in a three-axis manoeuvre even in the presence of external disturbances. Then, using a non-linear variable gains PD controller, which only uses angular velocity of the rigid body and the attitude parameters as the inputs, the performance of the control sy

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32

Zhao, Jinmeng, Lei Xiong, Danping He, and Jiadong Du. "Channel Characteristics of Rail Traffic Tunnel Scenarios Based on Ray-Tracing Simulator." Wireless Communications and Mobile Computing 2018 (August 1, 2018): 1–9. http://dx.doi.org/10.1155/2018/9284639.

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The tunnel scenario is a major rail communication scenario. In this paper, the radio channel characteristics of tunnel scenarios with different carrier frequencies, different distances between the transmitter (Tx) and receiver (Rx), and cross sections are simulated with a ray-tracing tool. Key parameters such as path loss, Rician K-factor, root mean square (RMS) delay spread, and angular spread are studied. According to the results, higher frequencies introduce larger path loss and the presence of the vehicle body increases the path loss by about 35 dB in the scenario; at the same time it will

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33

Li, Saiyi. "Orientation stability in equal channel angular extrusion. Part I: Face-centered cubic and body-centered cubic materials." Acta Materialia 56, no. 5 (2008): 1018–30. http://dx.doi.org/10.1016/j.actamat.2007.11.001.

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34

Shchedrenok, V. V., S. V. Orlov, and O. V. Moguchaya. "INSTABILITY AT CHRONIC DAMAGES OF A BACKBONE AND SPINAL CORD." Traumatology and Orthopedics of Russia 16, no. 2 (2010): 79–81. http://dx.doi.org/10.21823/2311-2905-2010-0-2-79-81.

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By means of mathematical modeling studying influence of angular deformation of a body on development of a spinal stenosis was performed. It is proved, that the increase in a corner of deformation promotes development of narrowing of the channel. The given law on an example of treatment of 10 patients with chronic damages of a backbone and a spinal cord is studied. At all patients the progression of deformation that has demanded surgical treatment was observed. The lead treatment has reduced a painful syndrome, has improved social adaptation, but has not affected a level of neurologic deficienc

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35

An, Liangliang, Liangming Wang, Ning Liu, and Jian Fu. "Combinatory Attitude Determination Method for High Rotational Speed Rigid-Body Aircraft." Mathematical Problems in Engineering 2020 (April 21, 2020): 1–15. http://dx.doi.org/10.1155/2020/7130142.

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In this paper, we present a novel multisensor combinatory attitude determination method that enables high-accuracy measurement of the attitude of a high rotational speed rigid-body aircraft. We analyze the external moments of the aircraft during flight and develop the method using theoretical deductions based on the motion equations of a rigid body rotating around the centroid. The proposed method fuses the data measured from GPS, gyrometer, and magnetometer and uses the improved unscented Kalman filter (UKF) algorithm to perform filtering. First, appropriate assumptions and simplifying approx

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36

Zhao, Chuan, LUO ZHANG, SA FENG, PENG ZENG, Qiang Zhou, and RUI YU. "STRESS AND DEFORMATION ANALYSIS OF A U-SHAPED THIN AQUEDUCT BASED ON SHELL ELEMENT." Stavební obzor - Civil Engineering Journal 32, no. 2 (2023): 137–46. http://dx.doi.org/10.14311/cej.2023.02.0011.

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In order to study the stress and deformation characteristics of Jigongzui U-shaped thin shell aqueduct structure, shell element in ANSYS is proposed to establish the three-dimensional finite element model of the aqueduct for numerical calculation, and the relevant mechanical parameters are obtained by detecting the depth of concrete carbonization. The simulated results show that: (1) The concrete carbonization depth of Jigongzui aqueduct reached 20mm, accounting for about 20% of the total thickness of the channel wall; (2) With the increase of aqueduct water level, the deformation and stress o

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37

Egorov, O. V., and A. K. Tretyakov. "Excitations of rotational energy levels of ozone molecule O3 by collisions with atoms of the noble gases (Ar and He)." Izvestiya vysshikh uchebnykh zavedenii. Fizika, no. 7 (2021): 162–70. http://dx.doi.org/10.17223/00213411/64/7/162.

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The scattering cross-sections on rotational energy levels of O3 by collisions with atoms of the noble gases (Ar and He) were calculated using the two-body scheme implemented in the MOLSCAT2020 package. All energy levels of O3 up to J max = K max = 5 and J max = K max = 7 were included that corresponds to 18 and 32 coupled channel equations. The dependences of the scattering cross-sections on the collision energy were analyzed and the most probable excited rotational states of O3 were determined. The rate coefficients at the temperatures of 5-300 K were calculated. The construction of the radia

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Li, Saiyi. "Orientation stability in equal-channel angular extrusion of body-centered cubic materials by {110}〈111〉 and {112} 〈111〉 slip." Materials Science and Engineering: A 503, no. 1-2 (2009): 118–21. http://dx.doi.org/10.1016/j.msea.2007.12.056.

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Martynenko, Natalia, Natalia Anisimova, Maria Shinkareva, et al. "Bioactivity Features of a Zn-1%Mg-0.1%Dy Alloy Strengthened by Equal-Channel Angular Pressing." Biomimetics 8, no. 5 (2023): 408. http://dx.doi.org/10.3390/biomimetics8050408.

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The structure, phase composition, corrosion and mechanical properties, as well as aspects of biocompatibility in vitro and in vivo, of a Zn-1%Mg-0.1%Dy alloy after equal-channel angular pressing (ECAP) were studied. The structure refinement after ECAP leads to the formation of elongated α-Zn grains with a width of ~10 µm and of Mg- and Dy-containing phases. In addition, X-ray diffraction analysis demonstrated that ECAP resulted in the formation of the basal texture in the alloy. These changes in the microstructure and texture lead to an increase in ultimate tensile strength up to 262 ± 7 MPa a

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Alimova, F. A. "Mathematical modeling of small soil channel laboratory stand drive and evaluation of its energy state." IOP Conference Series: Earth and Environmental Science 1284, no. 1 (2023): 012031. http://dx.doi.org/10.1088/1755-1315/1284/1/012031.

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Abstract The article presents data on improving the design of the Small Soil Channel research laboratory stand. The possibilities of experimental works on study of kinematic parameters and structural parameters, spatial dynamometering of working elements of tillage and sowing machines are described. The article considers the method for assessing the energy state of the laboratory stand small soil channel and studying the power distribution in its moving mechanisms. Based on the parameters obtained as a result of solving the equations of motion and energy state, using the full differential of t

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Peron, Mirco, Pål Christian Skaret, Alberto Fabrizi, et al. "The effect of Equal Channel Angular Pressing on the stress corrosion cracking susceptibility of AZ31 alloy in simulated body fluid." Journal of the Mechanical Behavior of Biomedical Materials 106 (June 2020): 103724. http://dx.doi.org/10.1016/j.jmbbm.2020.103724.

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Melchor, Denyz, Brenna Mockler, Smadar Naoz, Sanaea C. Rose, and Enrico Ramirez-Ruiz. "Tidal Disruption Events from the Combined Effects of Two-body Relaxation and the Eccentric Kozai–Lidov Mechanism." Astrophysical Journal 960, no. 1 (2023): 39. http://dx.doi.org/10.3847/1538-4357/acfee0.

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Abstract Tidal disruption events (TDEs) take place when a star ventures too close to a supermassive black hole (SMBH) and becomes ruptured. One of the leading proposed physical mechanisms often invoked in the literature involves weak two-body interactions experienced by the population of stars within the host SMBH’s sphere of influence, commonly referred to as two-body relaxation. This process can alter the angular momentum of stars at large distances and place them into nearly radial orbits, thus driving them to disruption. On the other hand, gravitational perturbations from an SMBH companion

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Abd - Elwahab, M. Rabie, Ahmad O. Moaaz, Waleed Fekry Faris, Nouby M. Ghazaly, and Mostafa M. Makrahy. "Evaluation the New Hydro-Pneumatic Damper for Passenger Car using LQR, PID and H-infinity Control Strategies." Automotive Experiences 7, no. 2 (2024): 207–23. https://doi.org/10.31603/ae.10796.

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In this study, a mathematical model of a new hydro-pneumatic damper consists of a double-acting cylinder, two oil chambers, a damping valve, and an accumulator is developed to assess its response to vertical vibrations in a passenger car. The main idea of the new damper aim to make that the damping coefficient in compression differ than that in rebound which achieve more stability specially during cornering. The damping coefficient difference in compression and rebound can be achieved due to the presence of accumulator. Both passive and active hydro-pneumatic suspension systems with the new da

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Aksenov, Denis, Rashid Asfandiyarov, and George Raab. "Influence of High-Speed ECAP on the Structure and Properties of Copper and Copper Alloy of Cu-Cr System." Key Engineering Materials 910 (February 15, 2022): 344–50. http://dx.doi.org/10.4028/p-6hekn2.

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The paper presents the results of a study of changes in the structure during equal-channel angular pressing (1 and 4 cycles) with a deformation rate of 320 mm/s. It was found that a significant structure refinement of copper M1 and Cu-1.1Cr alloy to an ultrafine-grained state occurs already after 1 ECAP cycle. A predominantly band structure with a transverse size of fragments of ~ 200-300 nm occurs. A specific feature of the structural state is alignment of low-and high-angle boundaries by dislocations and absence of unbonded dislocations in the body of fragments. After 1 cycle of ECAP, practi

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Wang, Jiande, and Ian Howard. "Finite Element Analysis of High Contact Ratio Spur Gears in Mesh." Journal of Tribology 127, no. 3 (2005): 469–83. http://dx.doi.org/10.1115/1.1843154.

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High contact ratio gears have been demonstrated to provide significant advantages for decreasing tooth root and contact stresses with potential flow-on benefits for increased load carrying capacity. Previous investigations with high contact ratio gears have involved analytical, numerical and experimental aspects. Much of the earlier numerical work using FEA was limited in its usefulness due to several factors; (i) the difficulty in predicting load sharing over roll angles covering two or three teeth simultaneously in mesh, (ii) the difficulty for the analysis to obtain quality results when mod

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Jiang, Yi Min, Kun Xia Wei, Wei Wei, et al. "Formation of TiO2 nanoporous layer on the surface of Ti13Nb13Zr titanium alloy treated by ECAP-Conform and Rotary Swaging." Materials. Technologies. Design 5, no. 2 (12) (2023): 166–76. http://dx.doi.org/10.54708/26587572_2023_5212166.

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This paper focuses on the formation of nanoporous layer on the surface of the third-generationbiomedical Ti13Nb13Zr titanium alloy widely used in the biomedical field. First of all, the alloy was asubject to equal channel angular pressing (ECAP) + conform treatment (ECAP-Conform) and RotarySwaging forging. Then the anodic oxidation method with 0.5 wt% HF electrolyte was used to preparea uniformly arranged porous layer on the surface of the samples with the different microstructurefrom EACP-Conform. The features of the formed porous layer were investigated. The effects ofoxidation time and oxid

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Rybalchenko, Olga, Natalia Anisimova, Natalia Martynenko, et al. "Biocompatibility and Degradation of Fe-Mn-5Si Alloy after Equal-Channel Angular Pressing: In Vitro and In Vivo Study." Applied Sciences 13, no. 17 (2023): 9628. http://dx.doi.org/10.3390/app13179628.

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An attempt to improve the functional characteristics of a degradable Fe-Mn-5Si shape memory alloy by means of structure refinement by equal-channel angular pressing (ECAP) was made. In the course of ECAP, an austenitic ultrafine-grained structure was obtained. In shear bands with a thickness of 301 ± 31 nm, twins 11 ± 1 nm in size were formed. Due to the resulting structure, the tensile strength was doubled up to 1419 MPa, and the yield strength was increased up to 1352 MPa, four times higher compared with the annealed state. Dynamic indentation tests revealed a decrease in Young’s modulus by

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Neyezhmakov, P., E. Tymofeiev, and О. Lyashenko. "Automation of Dosimetric Control for Laser Radiation." Metrology and instruments, no. 6 (December 28, 2018): 28–35. http://dx.doi.org/10.33955/2307-2180(6)2018.28-35.

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The wide application of laser systems and the increase in the values of their energy characteristics, which may hazard to the health of staff and other people in the area of direct and reflected laser radiation, necessitates a permanent dosimetric monitoring in these areas. However, the methods of measuring the parameters of laser radiation at a given point in space to determine the degree of radiation safety for the human body, established in the standard DSTU EN 60825-1: 2016, are difficult to implement when using obsolete monitoring equipment. Therefore, the development of an automated

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Suresh, K. S., M. Geetha, C. Richard, et al. "Effect of equal channel angular extrusion on wear and corrosion behavior of the orthopedic Ti–13Nb–13Zr alloy in simulated body fluid." Materials Science and Engineering: C 32, no. 4 (2012): 763–71. http://dx.doi.org/10.1016/j.msec.2012.01.022.

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Qi, Min, Zai Qi Yao, Yulia Ivanisenko, and Hans Jörg Fecht. "MAO-Prepared Hydroxyapatite Coating on Ultrafine-Grained Titanium." Materials Science Forum 654-656 (June 2010): 2168–71. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2168.

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The equal channel angular pressing (ECAP) results in ultrafine-grained (~200–500 nm) Ti with superior mechanical properties without the harmful alloying elements, which is beneficial for medical implants. To improve the bioactivity of Ti surface, Ca/P-containing porous titania coating were prepared on the ultrafine-grained Ti and coarse-grained Ti by micro-arc oxidation (MAO) in Ca/P based solution. The phase identification, thickness, composition and morphology of the coatings were analyzed. The amounts of Ca, P and Ca/P ratio of the MAO coating formed on ultrafine-grained Ti were higher than

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