00:02
Okay, so we want to identify the edge with applied traction.
00:06
So let's look at the, that would be the line connecting from 1 .5, 1 .25 to 20.
00:20
Okay, now natural coordinates is where c equals 1 and eta that varies from a negative 1 to 1.
00:30
And so we have the shape function on right edge and 2 equals 1 over 4 1 plus 1 1 minus eta 1 over 2 1 minus eta and then n 3 equals 1 over 4 1 plus 1 plus eta 1 over 2 1 plus eta and the traction is right word with a magnitude of 5k si so assuming that x direction is right and the y direction is upward.
01:03
We have t equals 5 ,000 squared 0.
01:10
And then you would calculate the jacobian for the right edge.
01:16
That'll be dx, dita, d .n2, dita x2, d.
01:21
Eta x2 plus dn3, d...