Interakce řady kolineárních mikrotrhlin s periodickou řadou inkluzí

On the interaction of an array of collinear microcracks with periodic array of inclusions

článek v časopise - ostatní, Jost

en

There is investigated a crack problem for an array of collinear cracks in composite matrix with their tips allowing to terminate at inclusions interfaces. Inclusions are situated in between the neighbouring cracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations and the Bueckner principle. First an approximate fundamental solution for a single dislocation lying in a general point between inclusions centres is developed. The Muschelishvili complex potentials and the Galerkin method for a numerical evaluation of coefficients of suitable chosen base functions are employed. Next the solution for a single dislocation is employed in the distribution of continuously distributed dislocation to cracks modelling.

There is investigated a crack problem for an array of collinear cracks in composite matrix with their tips allowing to terminate at inclusions interfaces. Inclusions are situated in between the neighbouring cracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations and the Bueckner principle. First an approximate fundamental solution for a single dislocation lying in a general point between inclusions centres is developed. The Muschelishvili complex potentials and the Galerkin method for a numerical evaluation of coefficients of suitable chosen base functions are employed. Next the solution for a single dislocation is employed in the distribution of continuously distributed dislocation to cracks modelling.

There is investigated a crack problem for an array of collinear cracks in composite matrix with their tips allowing to terminate at inclusions interfaces. Inclusions are situated in between the neighbouring cracks tips and exhibit different elastic properties than matrix. The problem is solved using the technique of distributed dislocations and the Bueckner principle. First an approximate fundamental solution for a single dislocation lying in a general point between inclusions centres is developed. The Muschelishvili complex potentials and the Galerkin method for a numerical evaluation of coefficients of suitable chosen base functions are employed. Next the solution for a single dislocation is employed in the distribution of continuously distributed dislocation to cracks modelling.

Spojitě rozdělené dislokace, interakce trhlina – inkluze, částicové kompozity

particle composites, continuously distributed dislocations, cracks-inclusions interactions

2003

01.01.2003

1013-9826

Key Engineering Materials

251

8

6