bluuebunny/crossref_metadata_2025_split huggingface dataset:
Callus-induced explants selection of ‘Pyrus betulifolia’
Authors: Gao Yufei , Chai Jiufeng , Dong Ying , Kong Lingling , Zhang Yong 
Published: March 2020

Abstract
Efficient and stable in vitro regeneration system is the basic condition and key factor for the genetic transformation of pear. In order to find the most suitable explants to induce callus, three different explants, including seeds, hypocotyls and young leaves, were selected to induce callus respectively, and the regeneration ability of the three explants was compared, and finally the best material was selected. The results showed that loose and plump callus could be induced by using hypocotyl as explant in a short time.
Measurement and Control Event Planning for Formation Satellites
Authors: Pan Yanhui , Li Ming , Wu Dongxin , Gao Bo 
Published: March 2020

Abstract
Formation satellites have configuration requirement. It takes new problem to the automatic process of long term satellite management. Because formation satellites can be managed by inter satellite links for TT&C missions. The complex restricted conditions have been analyzed, including that the execution time and content of TT&C event are various, and time is short for TT&C and so on. A solution of TT&C mission planning is given for formation satellites with multiple constraints. Based on automatic process for multi-satellite management, the formation satellites can be managed automatically for long term. It is applied in the system forsatellite long termmanagement. The result shows that can avoid mistakes caused by manual operation, and improve management efficiency for formation satellites.
System Dynamics Simulation of CO2 Emissions from Typical Route Ships
Authors: Wang Zheng , Qin Cuihong , Liu Chunling , Zhang Wei 
Published: March 2020

Abstract
With the development of the shipping industry, the issue of CO2 emitted by ships has received increasing attention. It is urgent to carry out research on calculation and emission reduction of CO2 emissions from ships. Ship CO2 emissions involves multiple fuel consumption, the navigational condition, and other main and auxiliary engines aspects. Based on the analysis of ship CO2 emission calculation methods, this study describes the relationship between ship CO2 and ship speed, ship status, and main and auxiliary engines. On this basis, the ship’s CO2 emission system dynamic model was constructed, and the ship’s CO2 emissions are simulated according to the actual data. The results show that the proposed the ship CO2 emission system dynamics model can simulate single ship’s CO2 emission in real-time changes in the cumulative cases and total emissions, the main engine CO2 emissions account for this voyage ship total CO2 emissions 86.1%.
Stability analysis of a round cross-section rod from Shape Memory Alloys at reverse phase transition
Authors: Dumanskiy S A 
Published: March 2020

Abstract
The mechanisms that cause loss of stability of Shape Memory Alloy rods during the reverse phase transformation under a constant load for various methods of preparing the rods before starting the reverse phase transition were considered. The problem was solved for non-, singly- and twice- coupled statements and for the concepts of fixed and varied external loads taking into account the different resistance under tension and compression.
Study of the properties of a aqueous sodium silicate film on the surface of a refractory filler
Authors: Kidalov N A , Grigoreva N V , Gabelchenko N I , Belov A A , Savchenko A I 
Published: March 2020

Abstract
We investigated the effect of the method of solidification of aqueous sodium silicate on the formation of its film on the surface of a refractory filler. The structure of liquid-glass films on the surface of a refractory filler cured by convective drying, blowing with carbon dioxide, and with the addition of organic ether (butyl acetate) was studied. Quartz and chromite sands were used as a refractory filler.
Finite-element simulation of cyclic compression of a cylinder with account for energy dissipation
Authors: Korolev P V , Shilov M A , Fomin S V , Maslov L B 
Published: March 2020

Abstract
The article considers the solution of the associated thermoelastic problem of dynamic compression of a cylindrical sample from hyperelastic material in an axisymmetric formulation using the Abaqus Simulia finite element modeling software package. The authors present the results of a numerical experiment, carry out its analysis, make a conclusion if it is necessary to take into account energy dissipation in the study of materials operating under cyclic loading.
Design of the solar panel frame of the spacecraft by 3D printing with composite materials
Authors: Mirzaev M A , Smirnov I G , Dyshekov A I , Slavkina V E , Shereuzhev M A , Aliev S A 
Published: March 2020

Abstract
The optimal design of the skeleton panel of the solar panels of the spacecraft was designed taking into account the increased physical and mechanical characteristics through the use of composite materials and the method of topological shape optimization.
Mathematical simulation the kinetics of polymerization of vinyl ester resin using in pultrusion
Authors: Nasonov Y A , Safonov A A , Gusev S A , Akhatov I S 
Published: March 2020

Abstract
The polymerization kinetics of pultrusion resins differs from that of resins used in other composite production processes due to the presence of processing additives in the resin. The influence of such additives should be taken into account when modelling polymerization kinetics. This article proposes a simulation method that will allow researchers to reduce errors and to predict polymerization kinetics of pultrusion resins more accurately.
A method for reducing the fatigue crack growth rategrowth rate
Authors: Fedorov A A , Chernyatin A S , Matvienko Yu G , Razumovsky I A 
Published: March 2020

Abstract
On the basis of numerical modeling by the finite element method, a study was made of the influence of the field of local residual stresses, created by the action of a spherical indenter on the crack tip, on the fatigue crack growth rate. The problems of the fatigue growth of a flat semi-elliptic crack in a plate as well as a crack in a standard CT specimen are considered.
Determination of high-gradient components of residual stress by data of test hole drilling method
Authors: Karakozov Egor , Odintsev Igor , Plotnikov Alexander , Plugatar Taras 
Published: March 2020

Abstract
The article discusses a modified method for the determination of residual stress in a deformable solid. The general approach is based on a combination of test hole drilling method and speckle pattern interferometry as a tool for deformation response registration. A feature of the proposed procedure for processing experimental data is that it directly takes into account possible high stress gradients at the stage of theoretical model building. The applicability of this technique is illustrated by the example of the residual stresses components measuring at a welded pipe joint.
Development of invariant plasticity theory approach to construction of non-isothermal plastic flow models
Authors: Khudyakova A D , Temis Y M 
Published: March 2020

Abstract
Constitutive equations of invariant plasticity theory model with two structural parameters are presented. The method of determination of model applicability for non-isothermal cyclic loading simulation of constructional materials is described. Results of model testing on non-isothermal and non-proportional loading programs for nickel base alloy IN738LC and steel 45 specimens are presented in compare with experimental results from literature.
Methods of estimating local microdeformation in the sample with defect
Authors: Naumov O V , Pugachev M S , Moskvitin G V 
Published: March 2020

Abstract
Currently, much attention is paid to the choice of approaches in describing the limit States of load-bearing structures of complex technical systems with high requirements for their strength, resource, survivability and safety. Application of complex macro-approach is considered as a new scientific basis of complex diagnostics for predictive assessment of resource, survivability and risks of emergency and catastrophic situations. Characteristics of local true deformations and damages have possibility of the analysis of difficult local processes of transition to limiting stages of deformation. In this paper, methods for determining local microdeformations by applying diamond pyramid prints are proposed. The stress – strain state of bodies with a crack was evaluated on rectangular samples with a weld in the middle of the working part of the sample and simulation of a crack in the middle of the working part of the sample. The effect of microdeformations on the local hardness of the sample surface along and perpendicular to the loading line is investigated. The obtained results confirmed the possibility of estimating local deformations by the proposed methods.
Finishing lenses and ceramic products with loose abrasive using the cavitating effect
Authors: Asaev A S , Murog I A , Ivanaiskij A V 
Published: March 2020

Abstract
The analysis of the existing technological processes of manufacturing machine parts showed that there are problems in quality assurance and efficiency improvement during finishing. A possible way to solve this problem is to use the processes of manufacturing machine parts using the cavitation effect, information about which in the technical literature is limited. The studied method of finishing machine parts with loose abrasive makes it possible to increase productivity by creating unique hydrodynamic conditions.
Research of nickel-based coatings erosion-corrosion wear
Authors: Nazarov A N , Prozhega M V , Yu Ivannikov A , Boytsova O V , Novikov A V 
Published: March 2020

Abstract
This article demonstrates the results of testing a nickel-based coating deposited by plasma spraying. According to the criterion of the relative volumetric wear rate, samples were compared at different concentrations of abrasive, impact angle of 45° and 90°, in an acidic media. A wear of a Ni coating with a steel substrate has been compared.
Interaction model of one jaw of a vibrating jaw crusher with the processed rock, taking into account the properties of the electric motor
Authors: Altshul G M , Gouskov A M , Panovko G Y , Shokhin A E 
Published: March 2020

Abstract
Vibratory jaw crushers are modern machines for grinding and rock crushing. Single jaw of vibratory jaw crusher is considered in this paper. Phenomenological model of interaction of the jaw and rock is proposed. Two options for considering the power of an unbalanced drive are considered. In the first, an unbalanced vibrator has a constant angular velocity relative to the bed. In the second, the electromechanical characteristics of the electric motor, which drives the unbalanced vibrator, are taken into account. The impact of crushed material on the vibrational modes of the jaw and the rotation characteristics of the vibrator for each of the vibration excitation variants is considered. The distribution of the technological load obtained based on this model over the jaw is shown

A post-publication change was made to this article on 20 Mar 2020 to correct an author affiliation.
The impact of nonorthogonality of the axial electromagnetic bearing disk on the stability region of a rigid rotor on a full electromagnetic suspension
Authors: Kapitanov D V , Bobylkov A G , Kapitanova O V 
Published: March 2020

Abstract
The paper presents the results of a research of the stability of a rigid homogeneous rotor with a symmetrical relative to the middle arrangement of radial EMB, supported in the vertical direction by an axial EMB. In the first part of the work, the researches were held using a proportional-differential regulator in the system. In the second part of the work was considered the impact of the control function parameters in the cases of instantaneous generation of the displacement signal and with delay.
Comparison between three mathematical models of three well defined ultrasonic NDT cases
Authors: Semenova M , Wirdelius H , Persson G 
Published: March 2020

Abstract
Ultrasonic nondestructive testing (NDT) is commonly used for in-service inspection in different areas. But reliability of NDT method is highly dependent on the equipment and crack features. Although, it is possible to use thoroughly validated mathematical models to avoid complicated and costly experimental work, when it is necessary to qualify new procedures. Finite Element Model (FEM) is a powerful tool, which is commonly used for such cases. In this paper three mathematical models of three well defined cases will be compared with each other.
Capabilities of vibration cutting at turning of hard-to-cut materials and built-up surfaces
Authors: Vladimirov A A , Afonin A N , Makarov A V 
Published: March 2020

Abstract
The article describes the results of vibration turning research for cutting the parts produced of austenitic steel of high ductility and strength, as well as for the machining of the surfaces reworked by the method of build-up welding. Lathe turning with a superposition of pendular-type harmonic vibrations to the cutting tool is one of the productive cutting methods of austenitic steel, from which parts of mining machines and equipment are made, and built-up surfaces as a result of repair of various parts of mining equipment. Selection of optimal amplitude-frequency parameters of cutting tool vibration allows to increase a period of tool material lifetime, to ensure constant process of chip breaking and helps to reduce a cutting force. When turning the materials with generation of pendular vibrations in cutting zone, some phenomena occur that are not observed during cutting without vibrations. Based on the results of tests of vibration turning the main facts were defined, which have the greatest influence on lifetime of cutting tools during cutting of austenitic class steels and built-up surfaces, it is expedient to consider: vibration velocity, vibration acceleration, vibrating influence energy dispersion. The concept of the vibration impact generalized function (VIGF) was introduced, which allows to describe mathematically three main factors of pendulum vibrations influence in the cutting zone. The equation of the mathematical model of vibration turning with VIGF is presented, which describes the dependence of the tool lifetime period on vibration parameters. The process of generation and breaking of the chips when turning the hard-to-cut materials is studied. The fields of temperature distribution in the cutting zone at turning are investigated.
Personalized biomechanical analysis of mandible teeth loosening during periodontal treatment with non-removable polymer splints with considering the different approach to physical and mechanical characteristics determining of bone tissue
Authors: Levchenko I M , Gribov D A , Krupnin A E , Arutyunov S D 
Published: March 2020

Abstract
A 3-dimensional finite element model of mandible anterior section, including a segment of mandibular bone tissue, four incisors, periodontal ligament (PDL), polymethylmethacrylate (PMMA) immobilizing splint of 0.5 mm thickness was developed. The stress-strain state of the model components is considered for the cases of a splinting structure presence and absence from the action of a typical occlusal load F = 200 N. The influence of the physicomechanical properties determining method for mandible bone tissue on the obtained results is evaluated.
Research of orientation characteristics of visual intersection illusion
Authors: Rakcheeva T A , Kostoev A T 
Published: March 2020

Abstract
During visual perception of an inclined line, partially passing behind an opaque object, an error (Poggendorff illusion) arises assosiated with an inadequate extrapolation of the line extension after its passing behind the object. The quantitative relations of the illusion values of displacement from the geometric and orientational parameters of the Poggendorf configuration are determined.
Generative design of biosimilar structures
Authors: Stepanyan I V 
Published: March 2020

Abstract
The article discusses ideas at the junction of various paradigms for the synthesis of new structures and shapes, where part of the calculation processes is based on computer technology using non-Euclidean geometry. Algorithms for generating bio-similar surfaces, parts, and textures that can be used in industry, in particular in additive technologies are given. The article has the descriptions of equations based on hyper-complex systems and conditions of the analyticity of functions. The algorithms for generating biosimilar surfaces can be used in generative design. While determining the parameters of hypercomplex systems and assessing the mechanical characteristics of the final products require additional research, the relative simplicity of mathematical algorithms for generating structures and shapes with non-Euclidean geometry opens up the possibility of applying the proposed method in various fields.
Use of the chord method for analyzing workspaces of a parallel structure mechanism
Authors: Antonov A V , Chernetsov R A , Ulyanov E E , Ivanov K A 
Published: March 2020

Abstract
The size and shape of the mechanism working area are one of the most important criteria of its performance. Known approaches to the analysis of the workspace, such as the geometric method or the discretization method, have a number of features that limit their effective application. This paper considers the optimization chord method for determining the working areas of various types on the example of a planar parallel mechanism. The simulation results for maximum, constant orientation and dextrous workspaces are presented.
About features of management of mobile robots with stepping movers of a rope type in a water environment
Authors: Briskin E S , Gulevsky V V , Penshin I S , Sharonov N G 
Published: March 2020

Abstract
The methods of moving robotic platforms having in their arsenal either an anchor-rope or an anchor-rope-tracked mover are analyzed. The algorithms of operation of caterpillar-anchor-cable movers of various designs and gait algorithms for a platform with an anchor-cable mover are determined.
About determination of the bearing capacity of the soil on the route of the walking robot with orthogonal drives
Authors: Burkhanov A A , Ryabova Y S , Ustinov S A , Leonard A V , Gavrilov A E 
Published: March 2020

Abstract
Problems of determining of bearing ability of a ground on a route of the walking robot with orthogonal drives are considered. The approach for definition of bearing ability of a ground with use of a support orthogonal walking drives a method of penetration is offered. The architecture of information - measuring system of the walking robot providing movement on a route with determining of bearing ability of a ground is offered.
Increasing the effective workspace of the planar 3-RRR mechanism by using kinematic redundancy
Authors: Erastova K G 
Published: March 2020

Abstract
A significant issue of parallel mechanisms is the existence of singularities where the end-effector can lose their mobility or cannot be controlled. The closeness to singularities affects the performance of the mechanism, for example, the actuation efforts increase, thus reducing the effective workspace of the mechanism. Kinematic redundancy can be used for avoiding the singularity and increase the effective workspace. The approach is considered on the example of a planar 3-RRR mechanism.
Holes manufacturing technology influence on the strength of fibrous composites
Authors: Kh Akhmedshin E , Polilov A N , Tatus’ N A 
Published: March 2020

Abstract
The hole effect on the unidirectional composite specimen bearing capacity describes in the article describes. A comparison of the finite element calculation of the plates with holes made in various ways with experimental data is carried out. Good convergence of the FEM calculation and experimental data is shown.
Approach to cross-platform 3d-models binary format development
Authors: Alpatova M.V. , Demidov D.G. , Vinokur A.I. , Krupenin V.L. 
Published: March 2020

Abstract
The article presents the process of analysis, processing and compression of 3D objects for their further transfer to the end user over the network. The necessity to optimize the disk storage occupied by 3D textured models and to convert data into a format compatible with any robotic systems is a subject of the discussion. Comparison of a developed binary format with counterparts is resulted.
Study of adhesive line quality and capacitance parameter in shaft/bush joints
Authors: Maslennikova E V 
Published: March 2020

Abstract
This article contains the analysis of application of adhesive joints and peculiarities of the control carried out for these joints. Requirements to a control unit, which shall be built into a conveyer line, are described. Besides, a new technique of shaft/bush joints is analyzed; a new control method is tested based on this technique. Obtained results allow making conclusions regarding the applicability of this method and its purposefulness.
Definition of service area of agricultural loading robot with manipulator of parallel-serial structure
Authors: Nikolaev M E , Nesmianov I A , Zaharov E N 
Published: March 2020

Abstract
For the mechanization of loading and transport work when harvesting vegetables packed in nets, the design of the loading manipulator on the mobile chassis is proposed. The design feature is that the component of the loading manipulator is a mechanism of parallel structure - a tripod. The required number of degrees of freedom of capture for the quality assurance of the process is substantiated.
Correct FRP tensile specimen
Authors: Zhavyrkin V V , Polilov A N , Arutjunova A S , Tatus’ N A 
Published: March 2020

Abstract
The article depicts a problem of creating a correct composite tensile specimen. Loading of the sample was carried out by shear stresses applied on the gripping part of its lateral surface. The calculation of the stress state of the object of study was carried out with the use of ANSYS software. The results obtained were compared with a standard flat sample.
Stability system design of flying body elevator control
Authors: Yass Muhammad A. R , Abdulaziz Abrahem Hussian 
Published: March 2020

Abstract
This paper, suggest the solution of a dynamic non-homogenous longitudinal pitch-mode flying body equation to analysis motion stability by determining the transfer function of a pitch mode control system from feedback control system diagram. It used a flying actuator design system to estimate optimum system stability and control using the time response method and root locus diagram for different gain values (K) and Gyro sensitivity values (GR) to obtain the best stability, peak value and time response. The results shows that the best stability and control behavior are achieved when K=1.4 and GR=1.2.