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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
A study of the stress distribution around the bimaterial notch tip
 Hrstka, Miroslav ; Klusák, Jan (referee) ; Profant, Tomáš (advisor)
Presented bachelor’s thesis deals with determination of stress singularity exponent, by which is possible to completely define the stress distribution around the bimaterial notch tip. This task is divided in four parts. The first part concerns with basics of fracture mechanics, concretely linear elastic fracture mechanics of crack and Irwin’s conception of stress intensity factor. The second part deals with generalizing of linear fracture mechanics to notches. In the third part is initiated the numeric-analytical algorithm for computation of stress singularity exponent and determination of strains and stresses of given notch, which is compounded from two orthotropic materials. The last part is created by numerical example, in which the concrete configurations of notches are tested in calculating software.
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Nestacionární pohyb tenké ortotropní desky zatížené impulsní silou
 Valeš, František ; Červ, Jan ; Volek, J.
Analytical solutions based on Flügge and Mindlin approximations of a thin elastic orthotropic plate under transverse impulse loading are discussed in the paper. The results in the form of displacements and velocities are compared with those obtained by 3D finite element solutions. Dispersion behaviour of the Mindlin approximation is studied as well. It was found out that there are always three different dispersion curves for any arbitrary direction of propagation.
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Napjatost tenké ortotropní elastické desky zatěžované příčně působícím pulsním obtížením
 Valeš, František ; Volek, J. ; Červ, Jan
The analytical solutions based on Kirchhoff and Rayleigh approximations of a thin elastic orthotropic plate under transverse impulse load are discussed in the paper. The results are compared with those obtained by means of FEM.
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