 The framework of generalized standard environments, due to Halphen and Nguyen Quoc Son, allows an easy writing of the laws of macroscopic behaviour.In 1982, Pierre Suquet established homogenization results for environments characterized by 2 potentials (free energy and dissipation potentials) and showed in particular that the generalized standard structure is preserved by changing scales when geometric variations are neglected.He notes that the homogenization of short-memory viscoelastic composites can lead to the appearance of long memory effects (an effect already noted by J.