A domain of influence theorem for microstretch elastic materials

In this paper we extent the concept of domain of influence, proposed by Cowin and Nunziato, in order to cover the elasticity of microstretch materials.We will prove that for a finite time t>0t>0 the displacement field uiui, the microrotation field φiφi and the microstretch function ψψ generate no disturbance outside a bounded domain BB.