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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Verifikace výsledků numerické dispersní analýzy na úloze rázu dvou elastických válců
 Gabriel, Dušan ; Plešek, Jiří ; Kolman, Radek ; Valeš, František ; Okrouhlík, Miloslav ; Šraml, M.
The numerical dispersion of two-dimensional finite elements was studied. The outcome of this dispersion study was verified by the numerical and analytical solutions to the longitudinal impact of two cylindrical bars. It was shown that the quadratic elements showed better accuracy than the linear ones.
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Návrh jeřábových komponent pomocí FEM s uvažováním kontaktních podmínek
 Šraml, M. ; Potrč, I. ; Gabriel, Dušan
In several construction components of crane mechanisms, the stress distributions can significantly depend on the way two elements come into contact with each other under loading. The three non-linear contact analysis were performed including the contact between screw threads in a system of crane hook and nut, the contact in the wheel/rail system at crane devices and the counterweight bar connection joint of boom crawler crane. An accurate prediction of localized contact stress is necessary for the fatigue life and the potential failure of the crane components.
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