ABSTRACT
A b s t r a c t A new g e n e r a l method has been deve loped i n composi tes me c h a n i c s . T h i s i s a m u l i p a r t i o l e e f f e c t i v e f i e l d method (EFM) ,which based on replacement of l o c a l e x t e r n a l f i e l d s , con t a i n i n g s e p a r a t e i n c l u s i o n by the e f f e c t i v e f i e l d depen ding on the p r o p e r t i e s o f the i n c l u s i o n under s tudy and those surrounding i t . EFM of averag ing the random s t r u c t u r e s based on the u s i n g of Green ' s f u n c t i o n f o r the r e s p e c t i v e problem.The e f f e c t i v e parameters of s t r e n g t h com p o s i t e s have e s t i m a t e d in the work. Keywords: Composite m a t e r i a l s , e f f e c t i v e parameters o f e l a s t i c i t y and s t r e n g t h .
