CONSERVATION-LAWS FOR THERMO OR POROELASTICITY

It is the purpose of the present paper to establish conservation laws for time-independent and time-dependent thermoelasticity in two dimens ions via the NA method. Due to the analogy between the mechanics of a thermoelastic and a poroelastic medium, the results obtained can be ap plied to studies of poroelasticity. The conservation laws derived here should prove useful in studies of fracture and defects in a linear el astic body under the influence of nonuniform temperature fields and in a porous elastic solid whose pores are filled with a compressible vis cous fluid In particular; a path-independent integral was derived whic h represents the energy release rate accompanying crack growth.