Abstract: In this paper, based on the assumptions of pure bending damage of beams, the elementary equations on bending damage are developed. Similar to the tensile damage variable defined as reduction of loading area by L.M. Kachanov,the bending damage variable is defined as reduction of moment of inertia. For the simplicity of application in engineering,asimple bending damage model is proposed.At last,an exact creep pure bending damage analysis is made, based on which the materials’constants of the simple bending da...