National Repository of Grey Literature 11 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
Dynamics of machines 2001
Dobiáš, Ivan
Sborník obsahuje 38 článků z konference Dynamika strojů 2001.
The contribution to modal analysis of light structures with correction to additional transducer mass
Pešek, Luděk ; Veselý, Jan
This contribution deals with the correction of measured FRF's to additional mass represented by moving mass of transducer which makes identification of eigencharacteristics more accurate. The correction is aimed at the change of eigenfrequencies by me
Vibration of a joint spherical shell - plate structure in interaction with an compressible filling
Zolotarev, Igor ; Velecká, S. ; Ihlárová, I. ; Wiszt, E.
The segment of spherical shell covered by an elastic plate and filled by a compliant substance represents a simplified mathematical model of a human skull including a model of brain tissue. The study of frequency-modal properties of this system was re
Simulations of brittle-ductile behavior of crucks in alfha iron
Rosecký, Zdeněk ; Machová, Anna
Atomistic simulations in bcc iron under plane strain show that cracks with orientation (-110) [110] emitt dislocations which causes crack blunting and crack stability near the critical Griffith stress.
Simulations of temperature and thermal expansion in bcc iron by molecular dynamics, comparison with experiments
Machová, Anna
The contribution presents some results from atomistic simulations of thermal expansion in bcc iron.the atomistic results agree well with experimental values for thermal expansion in iron.
To modelling of phenomenons of internal dynamics of systems with strong non-analytical nonlinearities
Škuderová, Alena
The creation of model of two spur gears with elastic supports so, in order that to waht mostly approximate real fact, was the aim of this work. This model considers the influence of motion in bearings not only at direction of line of mesh, but and at al direction, the damping and periodically variable stiffness into the gear mesh, frictional forces, possibly eccentricity of gears or manufacturing inaccuracy of teeth profile and influences of impacts, caused by existence of backlash.
Kneser function by the transformation of the differential boundary value problem into the integrodifferential equations
Hortel, Milan
Some problems by the analysis of the dynamic of mechanical systems lead on the solution of nonlinear integrodifferential equations. The Kneser functions are by the constructions of the kernels in the form of Gree´s function discussed.
Smoothing identification of systems with small non-linearities from complex transfer function
Kozánek, Jan
This paper deals with the simplified mathematical model of the transfer function of the system with small non-linearities. The iterative smoothing identification method of this system from measured complex transfer function is proposed. The associated near dynamic system is nonconservative, generally non auto-adjoint and non-commutative (with complex eigenvectors) but with simple eigenvalues.
Intermittency chaos of the impact oscillator
Peterka, František ; Čipera, Stanislav ; Kotera, T.
Chaotic motion of intermittency type of the impact oscillator appears near saddle-node stability boundaries of subharmonic motions with two impacts in the motion period. Chaotic motion arises due to an additional impact, which interrupts the process of instability. Intermitency chaos and its characteristics are explained in the paper.
Guided wave problems were studied by numerical and experimental methods
Kačor, Aleš ; Trnka, Jan ; Veselý, Eduard
Finite element method was used to analyze guided wave propagation in a thin steel plate. Numerical results were compared with experimental data obtained by double pulse holointerferometry.

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