THEORETICAL AND PRACTICAL ASPECTS FOR THE STRES STATE

Abstract

In the present study we propose to determinethe knowing the state of stress at a point in a deformable geometrical solid involves knowing the unitary stresses acting on three surfaces (defined in three planes) perpendicular to each other that pass through the point considered. On each surface there acts a normal stress and a tangential stress, represented by the two components parallel to the common edges. Due to the duality of tangential tensions, they are equal two by two, so the stress state at one point is defined by six stress, three normal and three tangential.Applying the formulas corresponding to the state of tension for a given deformable geometrical solid to which known σx,σy, xy determine the main stresses and the main directions that characterize the state of deformation.

Keywords

• deformable geometrical solid
• normal stress
• tangential stress
• main stresses
• main directions.