Author(s)

U. Leischner & A.F. Johnson

Abstract

Micromechanics analysis of hybrid woven fabric composites under tensile and compression load U. Leischner, A.F. Johnson German Aerospace Establishment (DLR), Institute for Structures and Design, D-70569 Stuttgart, Germany ABSTRACT An FE model for a carbon/aramid hybrid composite with a 2/2 twill woven fabric is described. Stiffness and strength properties are computed and compared with the results of simpler micromechanics models for woven fabric composites and with test data. The FE model is used to study the progressive failure process in hybrid composites under both tensile and compressive loads. INTRODUCTION In hybrid fabric composite laminates fibres with high strength and stiffness but modest failure strain, such as carbon fibres, may be combined with relatively ductile aramid or polyethylene fibres. Hybrids offer therefore advantages regarding structural integrity and sustained load under crash or impact conditions. However, hybrid fab

Keywords