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MEG 443/643
Problem 3-4, Text
1 P 2 3 4 4000 lb
10000 lb
L1 30 L2 30 L3 30
E . 30 10⁶ A 4
k1 . E^A
L1
k2 . E^A
L2
k3 . E^A
L3
k1e k1
k1
k1
k1 element 1 between nodes 1 and 2
k2e k2
k2
k2
k2 element 2 between nodes 2 and 3
k3e k3
k3
k3
k3 element 3 between nodes 3 and 3
K matrix is 4 by 4
Expand the matrices
k1ex
k1
k1
0
0
k1
k1
0
0
0
0
0
0
0
0
0
0
k2ex
0
0
0
0
0
k2
k2
0
0
k2
k2
0
0
0
0
0

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