... with the mechanical characterization of the heterogeneous material structured metamaterials through analyzing the ultimate strength using the limit analysis of the Representative Volume Element (RVE). To get the desired material strength, a novel finite element formulation based on the derivation of self-equilibrated...

... in detail. KEYWORDSFinite element Limit analysis Plasticity Incompressibility Linear programming INTRODUCTION The upper bound theorem is often used to assess the stability of engineering problems by modelling the material with a perfectly plastic model obeying an associated flow rule. According to the upper...