Question: All elements of the structure in Figure P3-47 have the same AE except element 1, which has an axial stiffness of 2AE. Find the displacements

All elements of the structure in Figure P3-47 have the same AE except element 1, which has an axial stiffness of 2AE. Find the displacements of the nodes and the stresses in elements 2, 3, and 4 by using symmetry. Check equilibrium at node 4. You might want to use the results obtained from the stiffness matrix of Problem 3.24.

Figure P3-47

(2 15 ft (1 (3 8) (10 (1) 20 ft 20 ft 4)

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