TECHNOLOGICAL APPLICATIONS OF ADAPTIVE FRICTION CLUTCHES

2020 ◽  
Author(s):  
N.V. Moiseeva ◽  
Keyword(s):  
Load Capacity ◽  
Kinematic Chain ◽  
Loading Capacity ◽  
Appropriate Use ◽  
Friction Clutch ◽  
Nominal Load ◽  
Executive Body

It is shown that the largest part of the existing adaptive friction clutches is suitable for use only in light and medium-loaded drives of machines, and their smallest part can be used in drives of machines operating at highly stabilized load on the Executive body. It is proven that short drives with a single-threaded kinematic chain it is advisable to use the adaptive friction clutch having relatively low accuracy and limited nominal loading capacity, in drives with long single-threaded kinematic chain, appropriate use of adaptive friction couplings with relatively low accuracy and with a higher nominal load capacity.

DEVELOPMENT OF A METHOD FOR SELECTING THE SHAPE OF THE LOAD CHARACTERISTIC THE ADAPTIVE FRICTION CLUTCH WITH A SEPARATE POWER CIRCUIT

2020 ◽  
Author(s):  
D.A. Ramazanov ◽  
Keyword(s):  
Total Mass ◽  
Load Capacity ◽  
Power Circuit ◽  
Load Characteristic ◽  
Design Version ◽  
Friction Clutch ◽  
Load Characteristics ◽  
Nominal Load

The main provisions of the method for selecting the form of the load characteristic of the AFM with a separate power circuit are formulated. The method involves taking into account the nominal load, the total mass of the drive, the value of the gain of the adaptive friction clutch with a separate power circuit and the accuracy of its operation, as well as recommendations for the choice of the second design version of the clutch. The choice of the type of adaptive friction clutch, taking into account the load characteristics, is based on the different load capacity and accuracy of operation, which correspond to these forms.

Calculation and design of adaptive friction second-generation couplings (first version)

2020 ◽  
Author(s):  
M.P. Shishkarev ◽  
Keyword(s):  
Second Generation ◽  
Load Capacity ◽  
Control Device ◽  
Load Characteristic ◽  
Friction Clutch ◽  
Nominal Load ◽  
Clutch Control

The method of calculating an adaptive friction clutch with a separate power closure (the first option) is given.The features of calculating the values of the clutch control device parameters to ensure the highest accuracy of operation at a given nominal load capacity are shown. Explanations are given when calculating the values of the control device parameters depending on the shape of the load characteristic of the coupling.

scholarly journals Long-term bending properties of cross-laminated timber made from Japanese larch under constant environment

2021 ◽  
Vol 67 (1) ◽  
Author(s):  
Ryuya Takanashi ◽  
Yoshinori Ohashi ◽  
Wataru Ishihara ◽  
Kazushige Matsumoto
Keyword(s):  
Load Capacity ◽  
Creep Rupture ◽  
Japanese Larch ◽  
Larix Kaempferi ◽  
Loading Capacity ◽  
Loading Test ◽  
Cross Laminated Timber ◽  
Duration Of Load ◽  
Rupture Behavior

AbstractCross-laminated timber (CLT) has been used extensively in timber construction. CLT panels are typically used in roofs and floors that carry a continuous load, and it is important to examine the long-term loading capacity of CLT. However, studies that focus on the long-term loading capacity of CLT are limited. To this end, we conducted long-term out-of-plane bending tests on seven-layer CLT made from Japanese larch (Larix kaempferi) under constant environmental conditions, investigated creep performance and duration of load, and experimentally analyzed creep rupture behavior. The mean estimated relative creep after 50 years was 1.49. The sample showed a satisfactory resistance to creep as a building material. The duration of load of most of the specimens in this study was shorter than the conventional value of small clear wood specimens. Specimens had a lower duration of load capacity than solid lumber. According to the results of survival analysis, a loading level of 70% or more caused the initial failure of specimens. Creep rupture of most of the specimens occurred at less deflection than displacement at failure in the short-term loading test. Additional studies focusing on the effects of finger joints, transverse layers, and width of a specimen on creep rupture behavior are suggested.

scholarly journals Optimisation of loading capacity of smoking kiln on drying characteristics of Catfish (Clarias gariepinus)

2019 ◽  
Vol 52 (1) ◽  
pp. 9-17
Author(s):  
Oluwafemi Babatunde Oduntan ◽  
Emmanuel Kolawole Ajani ◽  
Bamidele Oluwarotimi Omitoyin
Keyword(s):  
Load Capacity ◽  
Clarias Gariepinus ◽  
Moisture Ratio ◽  
Drying Rate ◽  
Loading Capacity ◽  
Fish Processing ◽  
High Moisture ◽  
Drying Characteristics ◽  
Operating Technique ◽  
New Knowledge

Abstract Fish smoking is widely used in the fish processing industry, especially in the post-harvest catfish product due to its simple operating technique. The objective of this study was to optimise the tray loading capacity of a smoking kiln for catfish. A mixture design was employed to investigate the effects of varied fish size (0.25, 0.30 and 0.35 kg) component tray loading on the loading capacity, drying rate and moisture ratio during smoking process. The results showed that the loading capacity of the kiln was between 190 and 198 pieces of fish at minimum and maximum 50 and 52 kg. High moisture ratio was observed at equal size combination at low drying rate. The catfish weight mixtures of 0.25, 0.30 and 0.35 kg used to evaluate the kiln load capacity optimization were significant (P < 0.05). The smoking kiln worked optimally at catfish size (50, 50 and 0 %) with maximum desirability of 0.63 resulted in weight of fish loaded of 51.30 kg, moisture ratio of 0.21 and drying rate of 0.5 kg−1 h. This study brings new knowledge about the loading capacity and confirms that the smoking kiln is an acceptable technology for processing fish.

Influence of Groove Molded Lines on the Lubrication Performance of Water-Lubricated Spiral Groove Thrust Bearings

2013 ◽  
Vol 694-697 ◽  
pp. 538-542 ◽  
Author(s):  
Xiao Yan Liu ◽  
Jia Sheng Wang
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Thrust Bearing ◽  
Pressure Field ◽  
Load Capacity ◽  
Loading Capacity ◽  
Spiral Groove ◽  
Thrust Bearings ◽  
Pressure Fields ◽  
Lubrication Performance

The water lubrication performance of spiral groove thrust bearings was affected by different groove molded lines. The pressure fields and the load capacity of water-lubricated spiral groove thrust bearings with different groove molded lines were simulated by computational fluid dynamics. The results show that the spiral groove which can produce the best loading capacity and steadier pressure field is appropriate to water-lubricated spiral groove thrust bearing. The line spiral groove can be used for decrease the process difficult when the loading capacity require is low.

THE USE OF ADAPTIVE FRICTION COUPLINGS IN THE DRIVES OF EQUIPMENT

2020 ◽  
Author(s):  
N. V. Moiseeva ◽  
Keyword(s):  
Load Capacity ◽  
High Accuracy ◽  
High Load ◽  
Loading Capacity ◽  
Rational Application ◽  
Average Accuracy ◽  
High Load Capacity

The systematization of adaptive friction clutches of all types and generations on the basis of rated load capacity and accuracy of operation is carried out. The systematization allows us to divide all the variety of designs of adaptive friction couplings at groups with particularly high accuracy and low nominal loading capacity, with average accuracy and the rated load capacity and low accuracy and high load capacity. The carried out systematization allows to define areas of rational application of groups of adaptive friction clutches.

ESTIMATION OF LOADING CAPACITY OF A DETAIL SUBJECTED TO CYCLIC LOAD

2021 ◽  
Vol 2 ◽  
pp. 51-57
Author(s):  
A.V. NEMENKO ◽  
M.M. NIKITIN
Keyword(s):  
Artificial Intelligence ◽  
Distribution Function ◽  
Fatigue Crack ◽  
Cyclic Load ◽  
Load Capacity ◽  
Random Variable ◽  
Loading Capacity ◽  
Loading History ◽  
Current Load ◽  
Failure Statistics

A method for assessing the current load capacity of a component of a complex mechanical system based on the failure statistics of similar parts and the actual loading history is proposed. A hidden semi-Markov model of a fatigue crack is considered. As a criterion for the load capacity, the safety factor is considered as a random variable, the distribution function of which is found by the proposed method. The scaling of the approach from detail to the system as a whole is assumed using artificial intelligence methods.

Systematic Analysis and Application of Multi-Loop Linkages with Multiple Joints in Modern Mechanical Engineering

2020 ◽  
pp. 11-25
Author(s):  
V.I. Pozhbelko ◽  
E.N. Kuts
Keyword(s):  
System Analysis ◽  
Load Capacity ◽  
Kinematic Chain ◽  
Algebraic Equations ◽  
Range Of Movement ◽  
Systematic Analysis ◽  
Modern Engineering ◽  
Topological Characteristics ◽  
High Load Capacity

This work analyzes various designs of multi-link linkage mechanisms with rotational kinematic pairs in the form of cylindrical joints of high load capacity that are widely used in various fields of technology. The use of multiple joints in such linkage mechanisms simplifies their design, reduces dimensions, weight and cost, as well as expands their functionality and the range of movement of the working body. The considered methodology of the system analysis of the structure and mobility of plane multi-loop linkage mechanisms with multiple joints includes the sequential determination of all the basic topological characteristics of the closed kinematic chain of a complex mechanism and its mobility in a given space of possible movements from a set of simple algebraic equations. The effectiveness of the proposed method for constructing reliable mechanisms with any given number and type of multi-loop joints is confirmed by the presented examples of the system analysis of the structure and mobility of plane multiple lever mechanisms used in various fields of modern engineering.

Analysis of the Nominal Load Effects on Gear Load Capacity Using the Finite-Element Method

2010 ◽  
Vol 224 (11) ◽  
pp. 2539-2548 ◽  
Author(s):  
I Atanasovska ◽  
R Mitrović ◽  
D Momĉilović ◽  
A Subic
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Significant Influence ◽  
Load Distribution ◽  
Load Capacity ◽  
The Finite Element Method ◽  
Gear Teeth ◽  
Load Effects ◽  
Nominal Load ◽  
Element Method

This research investigates the effects of the nominal load value on load distribution of simultaneously meshing gear teeth pairs, and on the involute gear load capacity. The research results presented in this article confirm that the nominal load value has a significant influence on the gear load capacity calculations. However, this influence is generally neglected in standard gear calculations, which can result in oversized gear dimensions. This can lead to inadequate gear designs in practice due to increased demand for reduced gear size and weight in modern machinery. The article provides a detailed description of the iterative numerical method developed in this research to support the modelling and analysis of load distribution in meshed gears using the finite-element method.

scholarly journals HUBUNGAN UKURAN DAN KEMAMPUAN MUAT KAPAL PUKAT CINCIN KECIL PADA BEBERAPA DAERAH DI SULAWESI UTARA

2013 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Revols DCh Pamikiran
Keyword(s):  
Mathematical Model ◽  
Load Capacity ◽  
Pelagic Fish ◽  
Loading Capacity ◽  
Fishing Vessel ◽  
Small Pelagic Fish ◽  
North Sulawesi ◽  
The Relationship

Kapal pukat cincin kecil merupakan kapal ikan yang umum digunakan untuk menangkap ikan pelagis kecil pada beberapa lokasi perairan di Sulawesi Utara. Penelitian ini bertujuan untuk mengetahui hubungan antara sesama dimensi ukuran utama dan antara dimensi ukuran utama dengan kemampuan muat pada 41 sampel kapal pukat cincin yang tersebar di beberapa lokasi di Sulawesi Utara. Hasil penelitian menunjukkan bahwa antara dimensi utama kapal pukat cincin memiliki model persamaan B=1,855+1,149L dengan r=0,74; D=-3,817+9,277L dengan r=0,70, dan hubungan antara panjang (L) dan kapasitas muat (GT) kapal pukat cincin menuruti model persamaan GT pukat cincin=2,154L0,043L dengan r=0,95. Kata kunci: muatan kotor, kapal pukat cincin, Sulawesi Utara.   Small Purse-Seiner is a fishing vessel which is commonly used in catching small pelagic fish in several locations in North Sulawesi. The purpose of this study was to determine the relationship between the principle dimensions and between principle dimension with loading capacity (Gross Tonnage, GT).  This research was conducted on 41 purse seiners from several locations in North Sulawesi. The results showed that relationship bet­ween the principle dimensions followed the equation models B=1.855+1.149L, with r=0.74; D=-3.817+9.277L, with r=0.70, and the relationship between the length (L) and load capacity (GT) purse seiner is fitted by the following mathematical model: GT purse seiner=2.154L0.043L with r=0.95. Keywords: gross tonnage, small purse-seiner, North Sulawesi.

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