Wariacyjne ujęcie przepływów termodyfuzyjnych sprzężonych z polem naprężeń

The functional for problems of the coupled viscoelastic thermodifusion is formulated. The basis for the construction of the functional constitute: balance equations, constitutive equations, mass and heat flux equations and boundary conditions of the problem. Next the problem of the heat and mass transfer coupled with the stress field in a homogenous and isotropic layer is treated. The process is generated by the values of the temperature and concentration on the boundary like in the classical technological processes. The solution is based on the formulated functional and on a modified direct Ritz method.