Classical beam theory with arbitrary number of layers

This short essay treats a bending theory for long beams made from laminates, i.e. a beam theory is derived for linear, elastic, isotropic material at small strains. It is a generalization to anarbitrary number of layers. As an example layered steel-polymer-steel (SPS) laminates are looked at, which are treated in metal-polymer-metal(MPM) bending forming processes, where the stress state influences the failure behavior.