National Repository of Grey Literature 14 records found  previous11 - 14  jump to record: Search took 0.01 seconds. 
Computation of the Q-parameter for a crack in the vicinity of an elastic-plastic material interface
Seitl, Stanislav
The different levels of a stress constraint are quantified by Q-parameter. The values of the Q-parameter are numerically estimated as a function of length of crack, material properties and with respect to bi-material interface. Corresponding calculations are performed by finite element method (ANSYS system).
The influence of T-stress on proporcional factor
Hutař, Pavel
Relation between crack opening displacement and J integral is of a great importance in fracture mechanics.The basic aim of this paper is to describe an influence of T-stress on proporcional factor. This factor is occured on the J integral and CTOD estimation equations. Specimens with different values of T-stress (compact tension,three point bend and single edge cracked tension) are analysed by finite element method, the factor is calculated as function of corresponding crack length. The influence of different material constants on proporcional factor are analysed by modified boundary layer model. Results are discussed from the point of view of two-parameter fracture mechanics.
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.

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