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Flexure of 2-D beam under uniform loading

   figure390
Figure 14:   Convergence of predicted maximum deflection for a hydrofoil beam with number of panels; predicted by different methods.
Figure 13:   Convergence of predicted maximum deflection for a rectangular beam with number of panels; predicted by different methods.

We consider a tex2html_wrap_inline301 ``thick'' (high) beam clamped at one edge and subject to uniform loading on its lower side, as shown in Figure 13. The predicted results (maximum deflection) from the different methods and with varying number of total numbers are shown in Figure 13. The vertical deflection given from beam theory is:

  equation402

where h is the ``thickness'' (height) of the beam, w is the value of the uniformly distributed loading, and L is the ``length'' (span) of the beam. For the 2-D beam shown in Figure 13, w=1Mpa, L=5m, and h=1m, equation (25) renders tex2html_wrap_inline315 . This deflection is also shown in Figure 13 as one solid line. Notice the poor convergence of the constant panel method, and the gradually improved convergence when the linear and the quadratic saw-tooth corrections are included.



Baris Gucun
Tue Mar 4 18:15:49 CST 1997