Page History

...

Now that we have a good idea about the stress distribution, we will look specifically at solving the problem in the problem specification. First, we will look at the stress in the r-direction at r = 11.5 inches. In the outline window, click Sigma-r at r =11.5. This will bring up the stress in the r-direction along the path at r = 11.5 inches (from the center of curvature of the bar).

XXXXXXXXXXXXXPICTUREXXXXXXXXXXXXXXXXXXXXXX

In the window below, there is a table of the stress values along the path. To find the value of sigma-r at r = 11.5 in, we again want to look far away from the transient stresses due to the moment. The path is defined in a counter-clockwise direction, so looking at the last value of the table should tell us the stress at r = 11.5 inches at the midpoint of the bar. This value of sigma-r is -57.042 psi.

Now, we will do the same for the stress in theta direction to determine sigma-theta at r = 11.5 inches. In the outline window, click Sigma-theta at r =11.5. This will bring up the stress in the theta-direction along the path at r 11.5 inches.

XXXXXXXXXXXXXXPICTUREXXXXXXXXXXXXXXXXXXXXX