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	Analytical approaches of local stability investigation applied to piecewise linear vibrating system - Kelvin-Voigt impact oscillator Kocanda, Lubomír Dynamical behaviour of soft impact oscillator is multifarious with plenty of manifold behaviour kinds commensurated with system parameters. The stability analysis of soft impact oscillator is very important for dynamic investigation. Floquet theory or Ljapunov exponent approach can be applied in numerical integration. However, contrary to numerical integration results processing, the analytic-numerical approaches give better view of the dynamical nub despite its' facing mutual very diverse terms. Approaches based on eigenvalue problem and small difference method presented in authors past papers are eked out with this contribution. This paper aim is to obtain the result of the local stability investigation approaches in analytical form. Detailed record
	Statistical and physical aspects of the use of master curve concept at assessment of loading rate effects on transition behavior Jurášek, Ladislav ; Kohout, J. ; Holzmann, Miloslav ; Dlouhý, Ivo The use of master curve at assessments of loading rate effects on fracture toughness transition behaviour. Independence of the master curve shape at different loading rates has been analysed based on measurements. In addition, shift of reference temperature with loading rate and physical aspects of fracture toughness change at different temperatures and loading rates has been discussed. From the statistical point of view, comparison of methods for reference temperature determination has been carried out. Detailed record
	Influence of constraint effect ahead of the crack tip on the fracture toughness - computation and experiment Vlček, Libor ; Chlup, Zdeněk ; Kozák, Vladislav Aspects of two-parameters fracture mechanics are on the investigation. On the base of 3DFEA the Q parameter and J integral are determined and compared with the experiment. Detailed record
	Numerical and experimental evaluation of fracture characteristics for 3 Point bend pre-cracked specimen Vlček, Libor ; Kozák, Vladislav An extensive investigation has been carried out on the sensitivity parameters determination describing fracture behavior of body with crack with respect to character change of true stress-strain curve with dominant region of Luders deformation. Detailed record
	Charpy V-notch impact test: Modelling and Experiment Lísek, Michal ; Kozák, Vladislav This paper describes dynamic modelling of V-notch Charpy specimen during pendulum impact test using the explicit program LS-Dyna.The elastoplastic behaviour was described by Johnson-Cook model and compared with experiments. Detailed record
	THE USE OF THE LOCAL APPROACH FOR THE BRITTLE FRACTURE PREDICTION Kozák, Vladislav ; Janík, A. The aim of the paper can be seen in using the Beremin conception of local approach to fracture resistance assessment. The local approach uses internal microscale variables related to the material damage evolution in order to predict initiation of macroscale cracks in an elastic plastic regime. Detailed record
	Analysis of dynamic FEM model of Charpy specimen Lísek, Michal ; Kozák, Vladislav This paper describes dynamic model Charpy specimen during pendulum impact test. Explicit program LS-dyna was used. Elasto-plastic behaviour was described Johson-Cook model. Dynamic behaviour of FEM model has been successful compared with of results experiments. Detailed record

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