Computer Aided Cylindrical Spur Gear Design

2021 ◽  
pp. 3-12
Author(s):  
M.A. Lyubchenko ◽  
Martinez Juan Marcos Garcia ◽  
Quintana Laura Angelica Samora ◽  
V.S. Syromyatnikov
Keyword(s):  
Statistical Analysis ◽  
Fatigue Strength ◽  
Computer Aided Design ◽  
High Efficiency ◽  
Desirability Function ◽  
Spur Gear ◽  
Performance Criterion ◽  
Individual Characteristics ◽  
Spur Gears ◽  
Computer Aided

Spur gear is used in machines to transmit rotary motion. Due to its simple design, reliability and compactness, it is widely used in technical devices — clocks, conveyors, cars. Two wheels of such a transmission have a constant gear ratio and high efficiency. The first performance criterion is the contact stress fatigue strength of the teeth. The second one is the tooth bending fatigue strength. Manual calculation of a spur gear is a difficult task due to the large number of formulas and conditions. The design area is limited to a small number of options that are not always optimal. It was proposed to expand the design boundaries to hundreds or thousands of options using a computer. Combinations of parameters (modulus, wheel width, number of teeth, material, etc.) form a variety of spur gears with different characteristics: dimensions, strength, weight, etc. The statistical analysis found hidden dependencies between characteristics and initial parameters. On the basis of regression metamodels, the relative importance of parameters for individual characteristics was established. When searching for optimal gears, the Desirability function D was applied with meta-models as arguments. On the basis of the existing standards, a system for computer-aided design of transmissions and statistical analysis of their performance has been developed. As a result of the study, the area of efficient spur gears with optimal characteristics was determined.

scholarly journals Research on the Design and Modification of Asymmetric Spur Gear

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Xiaohe Deng ◽  
Lin Hua ◽  
Xinghui Han
Keyword(s):  
Computer Aided Design ◽  
Design Method ◽  
Geometric Model ◽  
Simulation Method ◽  
Transmission Error ◽  
Spur Gear ◽  
Geometric Shape ◽  
Spur Gears ◽  
Gear Design ◽  
Aided Design

A design method for the geometric shape and modification of asymmetric spur gear was proposed, in which the geometric shape and modification of the gear can be obtained directly according to the rack-cutter profile. In the geometric design process of the gear, a rack-cutter with different pressure angles and fillet radius in the driving side and coast side was selected, and the generated asymmetric spur gear profiles also had different pressure angles and fillets accordingly. In the modification design of the gear, the pressure angle modification of rack-cutter was conducted firstly and then the corresponding modified involute gear profile was obtained. The geometric model of spur gears was developed using computer-aided design, and the meshing process was analyzed using finite element simulation method. Furthermore, the transmission error and load sharing ratio of unmodified and modified asymmetric spur gears were investigated. Research results showed that the proposed gear design method was feasible and desired spur gear can be obtained through one time rapid machining by the method. Asymmetric spur gear with better transmission characteristic can be obtained via involute modification.

The Evaluation of Bending Fatigue Testing of Austempered Ductile Iron Spur Gear

2019 ◽  
Author(s):  
Qi Zhang ◽  
Jianhua Lv ◽  
Rizwanulhaque Syed ◽  
Jing Zhang ◽  
Yang Xu ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Ductile Iron ◽  
Fatigue Testing ◽  
Spur Gear ◽  
Austempered Ductile Iron ◽  
Spur Gears ◽  
Reliability Design ◽  
Bending Fatigue ◽  
Bending Fatigue Strength ◽  
Number Of Cycles

Abstract An experimental evaluation of bending fatigue strength for austempered ductile iron (ADI) spur gears have been performed using Zwick fatigue tester. The gear material was manufactured by vertically continuous casting, in which the radius of the graphite grains is smaller. The Stress-Number of Cycles curve (S-N curve) for the bending fatigue strength of the ADI spur gears are manufactured without any specific surface treatments, and have been obtained by post-processing software. It was observed that when the reliability was 50%, the fatigue limit was 304.89 MPa. It has provided a reliable basis to rate the reliability design of the small gearboxes in automation later.

scholarly journals The main trends of computer-aided design systems development

2018 ◽  
Vol 251 ◽  
pp. 05001 ◽  
Author(s):  
Alexander Ginzburg ◽  
Leonid Shilov ◽  
Liubov Shilova
Keyword(s):  
Statistical Analysis ◽  
Computer Aided Design ◽  
Development Trend ◽  
Automated Design ◽  
Systems Development ◽  
International Database ◽  
Computer Aided ◽  
Main Development ◽  
Design Systems ◽  
Aided Design

A review of papers in the field of development of automated design systems is presented. For the purpose of evaluation of urgency, importance and prospects of research works in the aforesaid field, the paper also includes the statistics on published works for the last five years. Based on the methods of statistical analysis and comparison, the data from the SCOPUS International Database have been collected. As a result, the main development trend in this direction has been revealed.

Computer-Aided Design and Optimization of High-Efficiency LLC Series Resonant Converter

2012 ◽  
Vol 27 (7) ◽  
pp. 3243-3256 ◽  
Author(s):  
Ruiyang Yu ◽  
Godwin Kwun Yuan Ho ◽  
Bryan Man Hay Pong ◽  
Bingo Wing-Kuen Ling ◽  
James Lam
Keyword(s):  
Computer Aided Design ◽  
High Efficiency ◽  
Resonant Converter ◽  
Design And Optimization ◽  
Series Resonant ◽  
Computer Aided ◽  
Aided Design

scholarly journals AutoCAD: Application For Engineers

2020 ◽  
Author(s):  
Utsav Poudel
Keyword(s):  
Computer Aided Design ◽  
High Efficiency ◽  
Common Language ◽  
Education Students ◽  
Computer Aided ◽  
Modeling Software ◽  
The Common ◽  
Aided Design ◽  
Microsoft Windows ◽  
High Schoolers

Drawing is a way to present and convey diagrammatic detail of information to the mass peoplesthat explains the working, design, and composition of the products that in normal cases aredifficult to understand. It is the common language of engineers and encompasses architectural,civil, mechanical, and structural professions. AutoCAD is the best software to help engineers fordrawing. It is computer modeling software used to create 2D as well as 3D drawings of variousobjects. Standing as Computer Aided Design, it has high efficiency, low error rate, low inputcost, and many more so have outcasted the traditional manual method of drawing. In this 21stcentury, AutoCAD is widely used not only for engineers but also for high schoolers, college,vocational education students, and university students. With good dominating and solidmodelling, it is multilateral and can be competitive in average engineering design with financialefficiency. It runs on Microsoft Windows.

scholarly journals Correction: Computer-aided design of high-efficiency GeTe-based thermoelectric devices

2020 ◽  
Vol 13 (6) ◽  
pp. 1896-1896
Author(s):  
Min Hong ◽  
Kun Zheng ◽  
Wanyu Lyv ◽  
Meng Li ◽  
Xianlin Qu ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
High Efficiency ◽  
Thermoelectric Devices ◽  
Computer Aided ◽  
Aided Design ◽  
Energy Environ

Correction for ‘Computer-aided design of high-efficiency GeTe-based thermoelectric devices’ by Min Hong et al., Energy Environ. Sci., 2020, DOI: 10.1039/d0ee01004a.

Effect of Load Shape in Cyclic Load Variation on Dynamic Behavior of Spur Gear System

2012 ◽  
Vol 518 ◽  
pp. 119-126 ◽  
Author(s):  
Fakher Chaari ◽  
Walter Bartelmus ◽  
Radoslaw Zimroz ◽  
Taher Fakhfakh ◽  
Mohamed Haddar
Keyword(s):  
Cyclic Load ◽  
High Efficiency ◽  
Spur Gear ◽  
Industrial Applications ◽  
Time Varying ◽  
Spur Gears ◽  
Loading Conditions ◽  
Variable Loading ◽  
Load Shape ◽  
Variable Loading Conditions

Transmissions including spur gears are widely used in several industrial applications. They are characterized by high efficiency and capability to transmit high torques. A special attention should be made for transmissions running under varying loading conditions which have to be well monitored. The presence of this variability associated with defects that may occur in the transmission will complicate its condition monitoring. The first step to overcome this difficulty is to identify and characterize the dynamic response of the transmission in healthy conditions subjected to variable loading conditions. In this paper, a model based approach is presented in order investigate the influence of the loading shape on the vibration characteristics of the transmission. A dynamic model of a one stage spur gear transmission including a time varying loading conditions is developed. Two cases of loading conditions are considered. A parametric study is achieved and main conclusions are discussed.

scholarly journals Forming an individual trajectory of teaching computer-aided design by means of an intelligent adaptive system

Ergodesign ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 41-48
Author(s):  
Cong Hoang ◽  
Elena Avksentieva ◽  
Yuriy Fedosov
Keyword(s):  
Computer Aided Design ◽  
Printed Circuit Boards ◽  
Integrated Control ◽  
Individual Characteristics ◽  
Educational Process ◽  
Circuit Boards ◽  
Learning Path ◽  
Computer Aided ◽  
Kohonen’S Algorithm ◽  
Aided Design

The aim of the work is to increase the efficiency of teaching computer-aided design of printed circuit boards of ship integrated control systems (CAD PCB SICS) with forming an individual learning path, in which there is a need to move from traditional teaching to intelligent adaptive training. The research method is to analyze the peculiarities of forming an individual trajectory of teaching CAD PCB. Research results and novelty: an algorithm for implementing the training course at intelligent adaptive teaching CAD PCB SICS is developed; an algorithm for determining the complexity level of educational material for teaching CAD PCB by study priority is developed; Kohonen's algorithm for forming an intelligent adaptive environment of the educational process of teaching CAD PCB SICS is considered; an algorithm for adaptive testing with forming individual trajectories of teaching CAD PCB SICS is developed taking into account the student’s preferences and individual characteristics.

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