Author(s)

P. Prochazka

Abstract

Homogenization and shape optimization of fibers in a composite structure has been solved by many authors mostly by means of the FEM. In this pa- per a new procedure for homogenization of composites is proposed. This is based on the BEM, which seems to be more efficient and more accurate in applications than the FEM solution. Special properties of the distribution of stresses (or concentration factors) on a unit cell are used. Averaging pro- cess including integration over the unit cell, particularly in the case of fiber reinforced concrete (when the fiber ratio is relatively small) follows the fact that the stresses "relax" on the matrix and their distribution converges to constant except for a zone being in the vicinity of the fiber-matrix interfa- cial surface. This is why boundary e

Keywords