Include Page  


Include Page  


Numerical Solution
Now we are ready to choose what kind of results we would like to see.
Deformation
To add deformation to the solution, first click Solution to add the solution sub menu to menu bar
Now in the solution sub menu click Deformation > Total to add the total deformation to the solution. It should appear in the outline tree.
Normal Stresses
Sigma_xx
To add the normal stress in the xdirection, in the solution sub menu go to Stress > Normal. In the details view window ensure that the Orientation is set to X Axis. Let's rename the stress to Stress_xx
by right clicking the stress, and going to rename.
Sigma_r
To add the polar stresses, we need to first define a polar coordinate system. In the outline tree, right click Coordinate System > Insert > Coordinate System.
This will create a new Cartesian Coordinate System. To make the new coordinate system a polar one, look to the details view and change the Type Parameter from Cartesian to Cylindrical. To define the origin, change the Define By parameter from Geometry to Global Coordinate System. Put the origin coincident with the global coordinate systems origin (x = 0, y = 0). Now that the polar coordinates have been created, lets rename the coordinate system to make it more distinguishable. Right click on the coordinate system you just created, and go to Rename. For simplicity sake, let's just name it Polar Coordinates
.
newwindow  

 
https://confluence.cornell.edu/download/attachments/128617257/Cylinderical+coordinates+Large.png?version=1&modificationDate=1288834581000 
Now, we can define the radial stress using the new coordinate system. Click Solution > Stress > Normal. This will create "Normal Stress 2", and list its parameters in the details view. We want to change the coordinate system to the polar one we just created; so in the details view window, change the Coordinate System parameter from "Global Coordinate System" to "Polar Coordinates". Ensure that the orientation is set to the xaxis, as defined by our polar coordinate system. Now the stress is ready. Let's rename it to Sigma_r
and keep going.
Sigma_theta
Now let's add the theta stress. This is too a normal stress, so create a new normal stress as you did for Sigma_xx and Sigma_r. Now, change the coordinate system to Polar Coordinates, as you did for Sigmar. Next, change the Orientation to the Y axis. The Y axis should be in the theta direction by default. Rename the stress to Sigma_theta
.
Tau_rtheta
Finally, let's add the shear stress in the rtheta direction. To do this, we go to Solution > Stress > Shear. You'll notice that now, in the details view window, the stress needs two directions to define it. In order to solve for the rtheta shear, we need to change the Coordinate System parameter from the Global Coordinate System to Polar Coordinates. Also, ensure that the Orientation is in the XY direction (in polar, this will be r_theta by the coordinate system we created). Rename the stress to Tau_rtheta
.
This is what your outline tree should look like at this point:
Solve!
To solve for the stresses and deformation, we now hit the solve button.
Keep going! Almost done!