Page 469 - Fluid-Structure Interactions Slender Structure and Axial Flow (Volume 1)
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200
                                                                          160 \

                                                                          180
                                                                               d = 4 x  tos







                                                                          140



                                                                          I20



                                   .   d = 2.5  x  Io"                    100



                                    IIIIIIIIIIIIIII                       80   IIIIIIIIIIIIIII
                                                                            9        17      25       33        1
                                                                  Total number of  elements

                    Figure 6.8  Convergence  of  the  in-plane  eigenfrequencies  of  a  clamped-clamped  semi-circular  pipe  for  different  values  of  sd  and  ii = I7 = 0 :
                                           (a) first (lowest) eigenfrequency; (b) second eigenfrequency (Misra et al.  1988b).
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