Question: For the truss system shown in Figure 2, with EA= constant for all members and with pin supports at joints 1, 2 and a

For the truss system shown in Figure 2, with EA= constant for

For the truss system shown in Figure 2, with EA= constant for all members and with pin supports at joints 1, 2 and a roller support at 3: a) What are the dimensions of the global stiffness matrix? What are the dimensions of the net stiffness matrix? b) Derive the element stiffness matrix equations in the global co-ordinates. c) Derive the net stiffness matrix. 2m 2m 2 1 2 3 3m 3 15kN 33.61 1 10kN 4 3m CO AY X [5 Marks] [13 Marks] [7 Marks]

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