Application of Spring Lattice Models to Shell Structures – Geometric and Material Nonlinearities

Abstract

The report describes the research carried out in the second year of the project entitled "Application of lattice models on shell structures". Based on the first year findings the study of nonlinear issues in the reported second year of the project has been focused on membrane shells. The interest has been in the performance of the spring models when applied to problems involving geometrical and material nonlinearities. For this purpose the spring models have been tested against the continuum finite element distinctly in elasticity and in plasticity in the context of large deformations.