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The surface boundary conditions we'll apply are shown below. Setting the normal displacement for sides 1 and 4 to zero prevents rigid body translations in y' and x' directions, respectively, and arbitrary rotation within the x'-y' plane.

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Under Input Data, click Set Surface BC's. We'll be prompted for BCs for sides 1 through 4.

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For side 2, keep Natural BCs under Normal and enter 75e6 as the traction. Verify that this gives the above BC's for side 2. Click OK.

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Let's save the input settings so that, if necessary, we can read them back in, make changes and re-run the FEA solution. Under Input Data, select Write Input File. Type filename as rect.in and click Save. Check that the file rect.in has been saved in your working folder.

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Let's ask the computer to do something a little more mathematically challenging. So let's move on to Step 4 and prod the beast to assemble and solve the global system.

Go toStep to Step 4: Assemble and solve global system