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5.4 Application                                            97



                                            The next step is  to  impose the  boundary condition  of
                                   fixed  support  along  rims  of  the  three  holes.    On  the  upper
                                   surface,  we  impose  the  boundary  condition  of  the  frictionless
                                   support  with  the  vertical  load  of  100  N.    These  imposed
                                   boundary conditions are shown in the figure.
















                                            The  computed  von-Mises  stress  distribution  on  the
                                 deformed  shape  is  displayed  in  the  figure.    As  expected,  the
                                 maximum stress occurs at the inner corner of the bracket.  Since the
                                 ANSYS  files  of  this  problem  can  be  downloaded  from  the  book
                                 website, users can modify the problem to obtain different solutions.
                                 As  an  example,  the  stress  is  reduced  if  the  bracket  thickness  is
                                 increased.  Changing problem  geometry and boundary conditions
                                 can increase  understanding of the solution behaviors.   This often
                                 leads to improvement of the design and efficiency of the products.
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