Technológ - Ročník 17.; Číslo 4/2025

Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/1344

Browse

Author: search.filters.author.Blatnický, Miroslav

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Additive manufacturing technology
    (University of Žilina, 2025) Domaniková, Ivana; Blatnický, Miroslav; Dižo, Ján; Slušňák, Patrik
    The article presents an informative overview on the challenges of additive manufacturing technologies. It highlights various methods and their practical applications. Additive manufacturing offers an innovative approach to producing a wide range of objects by depositing material layer by layer according to a digital model. The article describes the fundamental operating principles, commonly used materials, and key areas in which additive manufacturing is implemented. We will describe the benefits of using this manufacturing method, including product customization, reduced material waste, and shorter production times. Our aim is to acquaint the reader with the technology of additive manufacturing and the principles underlying its operation.
  • Thumbnail Image
    Item
    Eigenanalysis of a valvetrain simplified model of a combustion engine with 3DOF
    (University of Žilina, 2025) Dižo, Ján; Blatnický, Miroslav; Dziubak, Tadeusz
    A valvetrain is a necessary structural unit of every combustion engine with discontinued combustion process. It ensures changing cylinder filling, allow low level of exhaust emissions and an optimal combustion process. There are several types of valvetrains depending on their design solution. In principle, there are recognized older valvetrain systems marked as OHV (overhead valve engine) and OHC (overhead camshaft engine). Regardless of a type of valvetrain, they include several components, which are in mutual connection. As they are exposed to dynamic effect during operational conditions, they should have suitable dynamical properties. A valvetrain is a mechanical system. The essential dynamical properties of a mechanical system of a valvetrain of a combustion engine include eigenfrequencies and eigenmodes. The article is focused on eigen analysis of a valvetrain of a combustion engine. Equations of motion of a simplified dynamical model of a valvetrain are derived. Eigen characteristics of a chosen type of a valvetrain are calculated. Matlab software and Simpack multibody software were used for calculation of the derived equations.