Browsing Ústav mechaniky těles, mechatroniky a biomechaniky by Author "Ševeček, Oldřich"
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Crack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configuration
Rubeš, Ondřej; Machů, Zdeněk; Ševeček, Oldřich; Hadaš, Zdeněk (MDPI, 2020-10-14)Kinetic piezoelectric energy harvesters are used to power up ultra-low power devices without batteries as an alternative and eco-friendly source of energy. This paper deals with a novel design of a lead-free multilayer ... -
Electro-mechanical analysis of a multilayer piezoelectric cantilever energy harvester upon harmonic vibrations
Machů, Zdeněk; Majer, Zdeněk; Ševeček, Oldřich; Štegnerová, Kateřina; Hadaš, Zdeněk (EDP Sciences, 2018-10-05)This paper addresses an important issue of the individual layer thickness influence in a multilayer piezo composite on electro-mechanical energy conversion. The use of energy harvesting systems seems to be very promising ... -
Influence of the cell geometry on the tensile strength of open-cell ceramic foams
Ševeček, Oldřich; Papšík, Roman; Majer, Zdeněk; Kotoul, Michal (Elsevier, 2020-02-19)Nowadays used open cell foam ceramic materials are mostly of irregular structure which means that the shape of particular foam cells does not exhibit any regular pattern. On one hand, such foam structures lead to only very ... -
Understanding the edge crack phenomenon in ceramic laminates
Ševeček, Oldřich; Kotoul, Michal; Leguillon, Dominique; Martin, Éric; Bermejo, Raul (Gruppo Italiano Frattura, 2015-10-05)In this work, a 2D parametric finite element model has been developed to predict the onset and propagation of an edge crack in ceramic laminates using a coupled stress-energy criterion. This approach states that a crack ...