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National Repository of Grey Literature 5 records found  Search took 0.01 seconds. 
The change of micromechanical parameters at the stable crack growth modelling
 Vlček, Libor ; Kozák, Vladislav
The simulation of the 3PB test for determination of the J-R curve using GTN model was verified using a set of standard experiments. Special finite elements has been used to predict the damage of material.
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Modeling of specific cathegory of bi-material bodies with respect to fracture mechanics\' problems solution
 Bareš, Pavel
Paper deal with numerical calculation problems of crack terminating throught an interface between two elastic identical materials with different yield stresses. Calculations are based on finite element method. Crack behaviour is described here by means of crack tip opening displacement CTOD assessed as a translation vector component on the 4. node from the crack tip lies on the crack face when the eight-node elements are used.
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Modelling of crack propagation through bi-material interface
 Náhlík, Luboš
Under conditions of Linear Elastic Fracture Mechanics is studied crack behaviour in front of circular particle. The typical behaviour of crack approaching the interface between matrix and particle is showen. Results of numerical calculations and applications of earlier suggested tentative fracture criteria for crack terminating at the bi-material interface are presented.
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Evaluation of the T-stress by the quarter-point elements
 Hutař, Pavel
The three-dimensional (3D) finite element model of center cracked plate, CT-specimen... is used to study evaluation of T-stress along the crack front. $T$ is evaluated by direct methods and from wedge quarter-point element nodal dispacement. Results are compared and discussed from point of view of using in three-dimensional finite element models. This paper contains summary of relations for T-stress evaluation for quarter-point element nodal.
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Problems of calculation T-stress in solid bodies
 Seitl, Stanislav
Contribution is about problems of calculation T-stress in solid bodies. The calculation is performed by using finite element method. The problem was solved on center cracked plate tension specimen (CCT). The constraint distribution is investigated along the crack front.
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