Page 269 - Shigley's Mechanical Engineering Design
P. 269

bud29281_ch05_212-264.qxd  11/27/2009  6:46 pm  Page 244 pinnacle s-171:Desktop Folder:Temp Work:Don't Delete (Jobs):MHDQ196/Budynas:






                  Figure 5–26               7.0

                  Plate loaded in longitudinal
                  tension with a crack at the
                  edge; for the solid curve there
                                            6.0
                  are no constraints to bending;  h
                  the dashed curve was obtained      a
                  with bending constraints
                  added.
                                                  h      b
                                            5.0


                                             4.0




                                            3.0
                                                              h b = 0.5


                                                                  1.0
                                            2.0




                                            1.0
                                              0        0.2      0.4       0.6      0.8
                                                               a b ratio
                  Figure 5–27

                  Beams of rectangular cross  2.0
                                                              h
                  section having an edge crack.          a
                                                    M            M
                                                           F
                                            1.8
                                                              h
                                                         a
                                                   F             F
                                                   2             2
                                                       l     l
                                            1.6

                                                             Pure bending

                                            1.4


                                                                       l  = 4
                                                                       h
                                            1.2
                                                                    l  = 2
                                                                    h

                                            1.0


                                              0        0.2      0.4       0.6      0.8
                                                               a h ratio
                 244
   264   265   266   267   268   269   270   271   272   273   274