Application of the Bodner-Partom constitutive equations for modelling the technical fabric Valmex used for the hanging roof of the Forest Opera in Sopot

摘要

The study of inelastic properties of the technical fabric Valmex used for 20 years as the roof structure of the Forest Opera in Sopot (Poland) is presented. Uniaxial tensile laboratory tests with constant strain rate have been conducted and analysed. Parameters of the Bodner-Partom constitutive model have been identified and verified by numerical simulations. Two approaches to parameter identification have been proposed: one (simplified) for laboratory analysis and the other (extended) for numerical calculations of the shell structures covered with the technical fabrics. Both approaches have proved their correctness in the FEM analysis.