For the quadrilateral elements shown in Figure P10–16, write a computer program to evalu...

For the quadrilateral elements shown in Figure P10–16, write a computer program to evaluate the sti¤ness matrices using four-point Gaussian quadrature as outlined in Section 10.4. Let E = 30 × 10⁶ psi and v = 0:25. The global coordinates (in inches) are shown in the figures.