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Force Matrix
F1 f1, 0 0
f1, 1 0 f2, 0 0
f2, 1 0
Boundary condition: Displacement at node 1 is equal to zero.
d1x 0
d2x
d3x . KE, 1 1
KE, 2 1
KE, 1 2
KE, 2 2
1 f1, 1 0 f2, 0 0
f2, 1 0
= d2x
d3x
0.00825
0.012
Stress in Element 1
1x . . E 1
L1
1
L1
d1x
d2x =
1x 8.25 103
Stress in Element 2
2x . . E 1
L1
1
L1
d2x
d3x =
2x 3.75 103