SCIDAR - A Digital Archive of the University of Kragujevac

This research paper considers an experimental approach to determining 3D printed housing diameters for press-fitting standard ball bearings. The housing was 3D printed using Fused Deposition Modeling (FDM) technology with DevilDesign PET-G filament. Printed bearing seats were made with a 0.2 mm resolution for two nominal bearing sizes: 13 mm and 26 mm. The bearing seats had three varied nominal measurements: one matching the size of the bearing being installed, another 0.1 mm smaller, and a t...

One of the existing problems with mechanical structures occurs in the form of oversizing components which lead to unnecessary, increased costs. This paper presents an application of the optimization problem with the goal of minimizing the mass of gears in a single stage geared speed reducer. Aside from cost savings through the use of less material, a reduction in mass also results in improvement of efficiency during operation. In this paper, this was achieved to a large extent and...

Hydrostatic transmissions are widely used in the field of mobile machines in construction, mining, agriculture, forestry, both to start working bodies (multipliers) that perform technological operations, and for motion drives. In the first part of the paper, hydrostatic power transmissions and their classification are described, followed by an explanation of the working principles of hydraulic pump and hydraulic motor. In the second part of the paper, the application of the hydrostatic trans...

This paper presents a novel practical approach to shape optimization of simple truss structures. The 10 bar truss problem was considered in its topology optimized form which uses only 6 bars in order to decrease the number of variables to be mapped. An identification of eligible solutions was created according to the shape and all optimization iterations were mapped in order to define zones in which one or more constraints would be exceeded. Results indicate that deviation from node coord...

This article is dedicated to transportation efficiency and the related problems. Its main goal is to analyse the effects that optimization can have on transportation efficiency and its ecological performances. This problem essentially refers to determining the most lucrative maximum quantity of commodity that can be loaded in a transportation vehicle. We used evolutionary algorithm in Excel solver to observe three different case studies. In all case studies a loading capacity of a transportat...

This paper will be given the dimensioning and check calculation of set screw connections with the design automation process. The introductory part of the paper shows the papers which deal with set screw connection problems. A critical overview of this field is given, along with the possibilities of design automation. A practice example of design was chosen for this investigation. Before the design model is made, the design is translated to mathematics parameters for dimensions and check ...