Question: (x) (1D) 1 : 1) (Boundary conditions) (fixed support): u1 = 0, u2 = 0 2) : F = 56N 3) : k(1) =
(x) (1D) 1 : 1) (Boundary conditions) (fixed support): u1 = 0, u2 = 0 2) : F = 56N 3) : k(1) = 3k, k(2) = k, k(3) = 2k, k(4) = k : (equilibrium equations). (element stiffness matrices) (global stiffness matrix) (global nodal force vector). (nodal displacements). (reaction forces). = 0 ( 1 ) 3 = 4 1 2-12)=\ X=2k F=56 N 43 2 4 14 3 3 1: (1D)
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