Verification and Validation

 Total Deformation

In the last section, we found that the max deflection at the tip of the crank is 0.052 in for the specified loading condition. Back in the pre-analysis we had predicted this max deflection to be 0.039 in. Our results agree pretty well considering that we had simplified the calculation for deflection by essentially using one guess height instead of accounting for the variable height along the x-direction which would have been much more complex. We are therefore confident that our result from the ANSYS simulation is in the right ball park. 

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$\sigma_x$

alongtheheightofthecross-section">

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$\sigma_x$

along the height of the cross-section

Now that we found normal stress along the y-direction of the cross section (i.e on the path), we can compare these results with Euler-Bernoulli beam theory. Remember that we had devised a simple script, back in the Pre-Analysis, to efficiently find stress at any heights. The following video will show you how to modify this code to directly compare the hand calculation results with the simulation results. We also take a look at how well our results from both methods compare.

*Insert video

The code snippet from the video can be downloaded here.

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