A method of modelling fabric properties and behavior first involves generating (16) a yarn model from fiber parameters, which may be empirically determined. The yarn model is homogenised (18, 20) to produce a homogenous representation of the yarn (YMM), suitable for use in finite element analysis. The method may then, secondly, involve generating (24) a fabric weave model by finite element analysis of the yarn representation (YMM). The fabric model is then also homogenised (26, 28) to produce a homogeneous representation of the fabric (FMM), suitable for use in finite element analysis. Finite element analysis of the fabric representation (FMM) can then be used to assess the suitability of various fabric materials for technical applications.