1. Use Gaussian quadature with two and three Gauss points and Table 10–2 to evaluate the following..


1. Use Gaussian quadature after a while two and three Gauss points and Table 10–2 to evaluate the aftercited integrals:

Then use the Newton-Cotes quadrature after a while two and three sampling points and Table 10–1 to evaluate the selfselfsame integrals. Compare your results.

2. For the quadrilateral elements shown in Figure P10–16, transcribe 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 n = 0:25. The global coordinates (in inches) are shown in the figures.