Constitutive modeling of geosynthetics

A constitutive model for geosynthetics is presented that incorporates compo nents describing direction-dependent elastic, plastic and time-dependent cr eep properties. The model is compared to a series of uniaxial tension tests performed on a biaxial geogrid and a woven geotextile. Tension tests to wh ich model predictions are compared include fast and slow monotonic tension, constant load creep tests and two series of cyclic tension. The model is s hown to offer reasonable predictions of in-air tensile load-strain properti es commonly associated with geosynthetic materials. (C) 2000 Elsevier Scien ce Ltd. All rights reserved.