Car is designed using the software package Autodesk 3ds Max. Polygonal modeling method was used and designed car represent a new conceptual solution car design. After modeling a car in mentioned software, final digital images are generated too. Final digital images are generated using the Mental Ray rendering tool as a default rendering tool of Autodesk 3ds Max. Attention is given only to the external design of the car, while the interior is not modeled. Furthermore, using the software ANSYS Fluent, 2D simulation of the airflow around the side contour of the vehicle was made in purpose of making changes in the geometry of the vehicle to improve the design in terms of reducing air resistance and improving aerodynamics. Most attention of that is given in changing value of angle between the hood and front windshield of car, and analysing back of the car with and without the rear wing. Leading to the obtained 2D simulation and leading with modifications of initial 2D model, existing 3D car model is redesigned. Assumption is that new 3D car model is resulting with better aerodynamic properties. 3D analysis of redesigned car model in terms of mentioned changes is performed too in order to analyse possible improvements compared to the initial design.
In accordance with the needs of modern industry for pneumatic machine for stacking bottles in the beverage bottling plant was designed control. Work has demonstrated the process of designing outdated relay control and control with programmable logic controller. The advantages and disadvantages of one and the other control are given. For control purposes are made pneumatic and relay scheme of the machine and their functions are simulated in software package Festo Pneumatics Fluids. Using software Festo FST 4:10 programmed programmable logic controller (PLC). Designed control functionality was confirmed on didactic equipment. To display the mode of the machine in Autodesk Inventor software has made an animated 3D model of the machine.
This paper analyzes the stresses caused by continuous loading at the opposite sides of a long beam. 2D and 3D diagrams of stress distribution Sy based on the terms of the theory of elasticity are designed. Stress distribution Sy is calculated in the middle of beam (y = 0) for different number of Fourier series and the results are presented with 2D diagram. On this basis, Fourier series with a sufficient number of members is determined in order for more accurate results. Further stress analysis is performed using Fourier series with a sufficient number of members. Calculation of stresses throughout the beam height is also performed, and the results are presented in 3D diagram. In order to confirm the accuracy of the results, numerical analysis is performed using the finite element method. Comparison of analytical and numerical results is also presented.