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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
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.
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Problems of determination of a Q-parameter
 Hutař, Pavel
The basic thema of this paper is to the determinate Q-parameter. In two parameter description for larger plastic zone Q-parameter is used. It is two ways how determinate Q: the HRR (Hutchinson, Rice, Rosengreen) reference field or MBLM (modified boundery layer model) can used. These methods are compared. Aim of this paper is to refer to same problems of Q determination.
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