Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh
2615-9872
Việt Nam
Cơ quản chủ quản: Đại học Quốc gia Thành phố Hồ Chí Minh
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Các bài báo tiêu biểu
Shaping the tooth profile of elliptical gear with the involute ellipse curve
Tập 4 Số 3 - Trang 1048-1056 - 2021
Non-circular gears (NCGs) with the advantage of compactness and simple mechanical structure in creating transmitters with variable gear ratios in the industry, so this is a topic that is being studied by many scientists. However, up to now the research usually focuses on NCGs with tooth profile that is an involute circle called involute tooth profile, while other curves have not been applied in th...... hiện toàn bộ
#elliptical gears #non-circular gears #involute ellipse #rack cutter.
A new design of the Lobe pump is based on the meshing principle of elliptical gear pairs
Tập 4 Số 2 - Trang 861-871 - 2021
The paper presents a new rotor design of an external coupling Lobe pump driven by pair of elliptical gears. The new rotor is a four-tooth elliptical gear with tooth profile is a improve cylocid curve. The improve cylocid curve is the locus of the fixed point on the generation circle, when the circle a pure rolling without slipping on the elliptical centrode of the rotor. The conditions of the roto...... hiện toàn bộ
Research and manufacture of external non-circular gear-pair with improved cycloid profile of the ellipse
Tập 4 Số 2 - Trang 835-845 - 2021
Non-circular gears (NCGs) are known as an alternative to conventional mechanical mechanisms in continuous speed converters. In which, the gear profile is the factor that directly affects the performance and quality meshing of the non-circular gear. However, the types of curves that are being used to generating profiles of the non-circular gears still exist limited in meeting the conditions of unde...... hiện toàn bộ
#non-circular gear #shaper cutter #tooth profile #improved cycloid curve.
Influence of the designing parameters on the profile slippage and flow of the Roots blower
Tập 1 Số 1 - Trang 13-19 - 2019
Nowadays, revolutionary development of industry in general and of manufacturing technology in particular allows to fabricate product with more complex shapes and structures. This is a reason why high-pressure Roots blowers have been designed with improved and more complicated profile. In this paper, the authors report the influence of the designing parameters on the profile slippage as well as on ...... hiện toàn bộ
Application of response surface methodology for evaluating material removal in rate die-sinking EDM roughing using copper electrode
Tập 1 Số 1 - Trang 20-27 - 2019
Die-sinking electrical discharge machining (EDM) is one of the most popular machining methods to manufacture dies and press tools because of its capability to produce complicated shapes and machine very hard materials. In this article, MRR study on die-sinking EDM in rough machinng of SKD11 die steel has been carried out. Response surface methodology (RSM) has been used to plan and analyze the exp...... hiện toàn bộ
LLC Inverter Design Procedure for Induction Heating with Quantitative Analysis of Power Transfer
Tập 4 Số 1 - Trang 739-747 - 2021
The paper explains the operating principle of an LLC resonant circuit for induction heating applications. Although induction heating has attracted a great deal of attention in recent years, very little consideration on designing the inductor in the resonant circuit for specific requirements has been done. Specifically, a design procedure with the required power and work-head dimension as inputs is...... hiện toàn bộ
#Resonant inverters #Inductive power transmission #Zero voltage switching
Reconstruction finite element model of cars
Tập 4 Số 1 - Trang 680-696 - 2021
The experimental method used in a frontal crash of cars costs much time and expense. Therefore, numerical simulation in crashworthiness is widely applied in the world. The completed car models contain a lot of parts which provided complicated structure, especially the rear of car models do not contribute to behavior of frontal crash which usually evaluates injuries of pedestrian or motorcyclist. I...... hiện toàn bộ
#Finite element model #internal energy #crashworthiness #simplified vehicle models
Path tracking control for car-like robots by pid controller with time-varying parameters
Tập 5 Số 3 - Trang 1642-1650 - 2022
Wheel mobile robots have been widely applied to many areas of life, from serving people in services and industrial logistics to military fields. Applications of wheeled mobile robots such as floor cleaning robots, supermarket robots, logistics robots in hospitals, autonomous robots that guide automatic guidance in intelligent factories, military robots and agricultural robots. Thereby, we can see ...... hiện toàn bộ
#Car-like robot #Path tracking #PID control #NURBS curve.
A Compact EES Program to Predict Axial Temperature Distribution in Triple-fluid Heat Exchanger
Tập 3 Số 3 - Trang 452-460 - 2020
In this paper, a simplified mathematical model is presented to predict the axial temperature distribution of fluids in a three-concentric tube heat exchanger. Calculation results are compared with experimental results to confirm accuracy. The objective of the study is to avoid temperature cross which is very likely to be occurred in triple-fluid heat exchangers. Thereby the designer can adjust the...... hiện toàn bộ
CFD simulation for the Wageningen B-Series propeller characteristics in open-water condition using k-epsilon turbulence model
Tập 1 Số 1 - Trang 35-42 - 2019
In the maritime industry, propellers are propulsive devices and play an important role in the performance of a ship. The hydrodynamic attributes of a propeller are described in terms of some dimensionless coefficients, such as thrust coefficient (KT), torque coefficient (KQ), and efficiency (η). However, it is arduous and usually expensive to determine the characteristics of a full-size propeller ...... hiện toàn bộ