| Abstract: | In the present paper the attempt is made to develop a phenomenological concept based on the assumption that the mechanical resistance of the material decreases as result of the structural and geometrical changes which take place in the solids during loading. This model is described in terms of damaging and adaptation parameters. The growth of structural and geometrical imperfections, as well as other softening processes leading to the loss of the mechanical strength of the solid regarded here as damaging processes. These damaging processes can occur simultaneously with the processes of material resistance (for example, strain-hardening) to the aggressive action of the external load. Development of the damaging and adaptation processes is described by properly kinetic equations. Several simple typical examples are discussed. |
