Improvement of Stamping by Rolling Processes of Pipe and Cylindrical Blades on Experimental Research

2020 ◽  
Vol 844 ◽  
pp. 168-181
Author(s):  
Andrii Shtuts ◽  
Mykola Kolisnyk ◽  
Andrii Vydmysh ◽  
Oleksandr Voznyak ◽  
Serhii Baraban ◽  
...  
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Mathematical Models ◽  
Experimental Research ◽  
Lateral Surface ◽  
Side Surface

During the experimental study, a pronounced beating and sealing of the side surface of the tubular, cylindrical blanks was recorded. It is established that cracks appear and develop in the central part of the lateral surface, i.e., it are destroyed. This fact confirms the claim that the destruction of tubular, cylindrical blanks of some materials begins on the side surface. It is established that the bases of analytical dependencies between the components of deformations describe the obtained results of the experimental study of SR tubular, cylindrical blanks within the error of the experimental data, which made it possible to construct a number of mathematical models for the purpose of further study of the SDS and the method of their determination.

EXPERIMENTAL STUDY OF THE KINEMATIC PARAMETERS OF MOVEMENT OF CARS FORCED IDLE MOTION

2018 ◽  
pp. 52-57
Author(s):  
Ivelin Kostov
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Kinematic Parameters ◽  
Research Results ◽  
Software Product

In the work brought some experimental data of kinematic parameters of movement of cars forced idle, as the software product was used to diagnose 900 ATS, which recorded kinematic parameters of vehicle. On the basis of the conducted experimental research results are shown tabulated and analysed.

The experimental research results of the influence of the shape of the contact surface of the basement to the deformable subgrade.

2016 ◽  
Vol 4 (2) ◽  
pp. 0-0
Author(s):  
Юлия Наумкина ◽  
Ulia Naumkina ◽  
Яков Пронозин ◽  
Yakov Pronozin ◽  
Дмитрий Рачков ◽  
...  
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Contact Surface ◽  
Soil Deformation ◽  
Lateral Compression ◽  
The Core ◽  
Modulus Of Deformation ◽  
Deformed State ◽  
Core Base

The article presents the analysis of the results of field experimental study of the effect of the contact surface forms of the foundation on the deformability of subgrade. Experimental data show peculiarities of intensely deformed state of subgrade loaded on a curved concave contact surface. Stiffening of the base in this case is due to higher modulus of deformation of soil deformation in the core base, due to the additional lateral compression of soil, relating to a form of the contact surface.

scholarly journals Development and Testing of a Block Hydrocyclone

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1577
Author(s):  
Alexandr Repko ◽  
Milan Sága ◽  
Boris Sentyakov ◽  
Vladislav Sviatskii
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Reynolds Number ◽  
Mathematical Models ◽  
High Strength ◽  
Fluid Consumption ◽  
Fluid Filtration ◽  
Fluid Movement ◽  
First Time ◽  
Made In

The study aimed to theoretically substantiate the efficiency of liquid purification and obtain corroborating experimental data for a hydrocyclone, consisting of several blocks. Mathematical models of the process of hydrodynamic fluid filtration were developed with the use of screw swirlers. The obtained mathematical models characterize all the main processes of fluid movement in various zones of the functioning of the hydrocyclone. Formulas for calculating the structures of hydrocyclone blocks are included. A block for swirling the flow of the liquid to be cleaned has been made in the form of a three-way screw. For the first time, wear-resistant and high-strength plastic ZEDEX ZX-324 has been used as a material. An experimental study was conducted and the change in the Reynolds number and the coefficient of fluid consumption was shown, using different constructions of the three-way screw. The research results confirmed the correctness and sufficiency of mathematical models for the development and production of block hydrocyclones.

Numerical Simulation and Experimental Research on Fatigue Strength of the Injector Guide Pillar under Complex Loads

2010 ◽  
Vol 118-120 ◽  
pp. 196-200
Author(s):  
Jin Guo Li ◽  
Xiao Gui Wang ◽  
Zeng Liang Gao
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Numerical Simulation ◽  
Experimental Study ◽  
Fatigue Life ◽  
Fatigue Strength ◽  
Numerical Analysis ◽  
Experimental Research ◽  
Contact Surface ◽  
Electronic Measurement

Under the complex loads, the injector guide pillar (IGP) used in injection machine was failure only after 1.5-year-service. In order to determine the cause of the fracture, the numerical simulation technology was applied to analyze the mechanical properties of the IGP. The contact between the mating surfaces of the clamping mechanism was modeled; nonlinear multi-region contact of surface-surface was applied to establish the contact model of FEA. The constraint of tie was used for modeling thread joint. The simulated results indicated that the smaller area of contact surface, the higher value of stress in the neck of IGP. Electronic measurement was also used to check the results of stress in IGP obtained by FEA. It was found that the experimental data agreed well with simulated results. Based on the numerical analysis and experimental study, the structure of IGP was improved by adopting a smoother double-round neck. The fatigue life of the improved structure was longer than that of the original machine.

scholarly journals LABORATORY EXPERIMENTAL RESEARCH OF LOADING FORCES DEVELOPMENT ACTING ON THE SIDE SURFACE OF THE PILES

2018 ◽  
Vol 1 (50) ◽  
pp. 174-180
Author(s):  
V. E. Naydenova
Keyword(s):  
Experimental Research ◽  
Lateral Surface ◽  
Side Surface ◽  
Load Bearing Capacity ◽  
Friction Forces ◽  
Ground Resistance ◽  
Theoretical Statement ◽  
Torque Load ◽  
Negative Friction ◽  
Resistance Forces

The forces of negative friction or loading forces of friction on the piles develop due to additional deformations of near pile array and they cannot be more force of resistance on the side of pile in rest, that is formed due to own weight of the ground founding. The paper presents the results of laboratory experimental research of loading forces of friction acting on the lateral surface of the piles without taking into account the vertical load (being relatively at rest) and provided an analysis of methods for detection of negative friction forces (loading forces) acting on the lateral surface of the pile, with the appointment of their load-bearing capacity. The researches have confirmed the theoretical statement about the equality of the loading forces of friction to ground resistance forces under the action of the torque load but not the pulling load, as it is suggested in the modern standards.

scholarly journals Experimental Research on C60 Concrete Strength Evolution under Different Curing Conditions

2020 ◽  
Vol 198 ◽  
pp. 01002
Author(s):  
Zhu Ran ◽  
Xu Jun ◽  
Zhan Yijian ◽  
Zuo Zibo ◽  
Zhou Xiangyang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Compressive Strength ◽  
Experimental Research ◽  
Concrete Strength ◽  
Functional Relation ◽  
Maturity Models ◽  
Curing Conditions ◽  
Under Five ◽  
Strength Evolution

An experimental study on the C60 concrete was carried out under five different curing conditions based on the maturity theory. The influence patterns of the curing conditions on the increase of the C60 concrete strength were discussed. The experimental data were fitted using different strength-maturity models, the accuracies of which were then analyzed. The results show that the mapping relation between the compressive strength and maturity of the C60 concrete could be well characterized by the logarithmic functional relation.

Integrating experimental data and mathematical models in simulation of physical systems

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 1787-1790
Author(s):  
Boris A. Zeldin ◽  
Andrew J. Meade
Keyword(s):  
Experimental Data ◽  
Mathematical Models ◽  
Physical Systems

DIFFRACTION ANALYSIS OF DEFORMED METALS: Theory, Methods, Programs

2019 ◽  
Author(s):  
Faina Satdarova
Keyword(s):  
Experimental Design ◽  
Dislocation Density ◽  
Mathematical Models ◽  
Diffraction Analysis ◽  
Experimental Research ◽  
Russian Federation ◽  
Statistical Estimation ◽  
X Rays ◽  
National University ◽  
The Russian Federation

General analysis of the distribution of crystals orientation and dislocation density in the polycrystalline system is presented. Recovered information in diffraction of X-rays adopting is new to structure states of polycrystal. Shear phase transformations in metals — at the macroscopic and microscopic levels — become a clear process. Visualizing the advances is produced by program included in package delivered. Mathematical models developing, experimental design, optimal statistical estimation, simulation the system under study and evolution process on loading serves as instrumentation. To reduce advanced methods to research and studies problem-oriented software will promote when installed. Automation programs passed a testing in the National University of Science and Technology “MISIS” (The Russian Federation, Moscow). You score an advantage in theoretical and experimental research in the field of physics of metals.

scholarly journals A Magneto-Active Elastomer Crawler with Peristaltic and Caterpillar Locomotion Patterns

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 74
Author(s):  
Tsam Lung You ◽  
Hemma Philamore ◽  
Fumitoshi Matsuno
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
External Magnetic Field ◽  
Mathematical Models ◽  
Confined Spaces ◽  
Low Mass ◽  
Structural Simplicity

In this work we present a soft crawler fabricated using a magneto-active elastomer. The crawler is controlled by an external magnetic field to produce two locomotion patterns: peristaltic and caterpillar crawling. Due to its structural simplicity, low mass, wirelessly controlled actuation and compliant body the design of this crawler has the potential to address the key challenges faced by existing crawling robots. Experimental data were gathered to evaluate the performance of the crawler locomotion in a pipe. The results validated the mathematical models proposed to estimate the distance traveled by the crawler. The crawler shows potential for use in exploration of confined spaces.

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