Hi, I am solving a plate with hole problem (plane strain) subject to uniform tension in x direction and uniform compression in y direction in Ansys. In the post processor, I can see the values of X and Y component of stress at a particular node. But I want to find hoop stress (sigma theta ) at that node .( In order to find stress concentration factor). How shall I find this ?
Hi Piska Raghu,
in general, you should change the coordinate system to the cylindrical one, the option is available in the postprocessor. However, for this particular problem you should output the Cartesian components: sigma_x and sigma_y in two points of the hole (I assume that the hole is circular ?). At the point of the circle, where the tangent is parallel to X-axis (top or bottom point) the stress component sigma_x is the hoop stress while at the (left or right) points sigma_y is the hoop stress.
Generally the default co-ordinate system is Cartesian (x,y,z) co-ordinate system or in ansys it is '0' you have to change the co-ordinate system to cylindrical co-ordinate system is Cartesian (r,theta,z) co-ordinate system in ansys it is '1'. All the option available in utility menu 'workplane. In cylindrical co-ordinate system X-component of stress is radial stress and Y-component stress is theta stress.
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