For the bar shown in Figure P16–8, determine the nodal displacements, velocities, and accelerations for five time steps using two finite elements. For simplicity of calculations, let E = 1 × 106 psi, ρ = 1 lb-s2 /in4, A = 1 in2 , and L = 100 in. Use Newmark’s method and Wilson’s method.
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