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All Journal International Journal of Research in Vocational Studies (IJRVOCAS)
Thoi Le Nam
Dong Nai Technology University
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Assess The Level Of Smooth And Stable Of The Suspension When Convert From Mechanical Suspension To Air Suspension Huu Huy Nguyen; Lanh Thanh Le; Thoi Le Nam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (689.445 KB)

Abstract

This report illustrates the result of calculation of the level of smooth and stable of the bus when converting suspension from mechanical suspension to air suspension. The mechanical vibrations of the automobile in moving process includes: amplitude, frequency, acceleration, .... These factors may affect the safety of goods and the human state in the bus. This result also shows the great strengths of air suspension than mechanical suspension so that the requirement of smooth level in movement is guaranteed which is a good condition to rise the safety of goods in the bus, maitain human health, reduce physical fatigue and psychological tireness of drivers and passengers.
Study and Simulation Stability of the Vehicle Body with the Air Suspension Ho Xuan Truong; Lanh Le Thanh; Thoi Le Nam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 1 (2022): IJRVOCAS - April
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i1.89

Abstract

The article mentions to the content of the study simulation stability trunk with air suspension uses Matlab Simulink software, the study effects of air suspension system to stability trunk when the vehicle is moving. Since we conduct simulated stability truck control with air suspension based on parameters Mobihome HB120SSL Thaco bus. Results thesis has successfully built a simulation model for stability trunk in linear motion on vehicle specifications Thaco Mobihome HB120SSL, survey control changes in these parameters as the stiffness of the air suspension system helps stability trunk when the vehicle moves. The simulation results indicate that, when using the air suspension system can change the parameters of the elastic member stiffness according to the distribution of the load on the wheels, thereby limiting air suspension get the trunk moving at the wheel, greatly improving the stability of the trunk when Thaco Mobihome HB120SSL bus move.
Numerical Investigation on Characteristics of Fluid Flow Over Cavity in a Parallel Channel at Low Reynolds Numbers Nguyen Hung Khanh; Lanh Le Thanh; Thoi Le Nam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 2 (2022): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i2.66

Abstract

The database management output system is interesting and available in the numerical analysis of fluid flow, especially for a fluid flowing past a cavity inside a channel. The aim of the current study is to investigate numerical simulations characteristic of fluid flowing over a cavity in a parallel channel at low Reynolds numbers and to predict reduced energy. Computer Fluid Dynamic (CFD) is utilized to solve two-dimensional low Reynolds Navier-Stoke equations with support from Gambit software, which incorporates a simulation modelling suite in the meshing model. The numerical simulations were carried out by fluid such as water for the Reynolds numbers of 50 and 1000 and for cavity aspect ratio, W/H, of 1/3, 1/2, 1, 2, and 3. The normal mean velocity input is unity. This investigation indicated that changing cavities aspect ratio influences vortex flow significantly. Besides, the study found that the aspect ratio of cavities and Reynolds numbers influence total pressure and temperature output significantly and are important for most fluid dynamic problems. Finally, the optimal reduced pressure in a channel and optimal design cavities geometries yield better results.
Assess the Level of Smooth and Stable of the Suspension when Convert from Mechanical Suspension to Air Suspension Huy Nguyen Huu; Thoi Le Nam; Lanh Le Thanh
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 2 (2022): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i2.86

Abstract

This report illustrates the result of the calculation of the level of smoothness and stability of the bus when converting suspension from mechanical suspension to air suspension. The mechanical vibrations of the automobile in the moving process include amplitude, frequency, and acceleration. These factors may affect the safety of goods and the human state on the bus. This result also shows the great strengths of air suspension over mechanical suspension so that the requirement of a smooth level of movement is guaranteed which is a good condition to rise the safety of goods in the bus, maintain human health, and reduce physical fatigue and psychological tiredness of drivers and passengers.
Co-Authors Ho Xuan Truong Huu Huy Nguyen Huy Nguyen Huu Lanh Le Thanh Lanh Thanh Le Nguyen Hung Khanh