Homogenized elastoplastic response of repetitive 2D lattice truss materials.

Highlights: [•] Construction of initial yield surface of 2D beams lattice by means of discrete asymptotic homogenization. [•] Construction of the elastoplastic homogenized response of 2D lattices subjected to multiaxial loadings. [•] General methodology, can deal with internal nodes and no assumption of uniform deformation is needed. [•] Applications to conceived 2D lattices (Octagon-Mixed, asymmetric and star-square lattices). [•] Good agreement with FE simulations. [ABSTRACT FROM AUTHOR]