Page 136 - Mechanics of Microelectromechanical Systems
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2. Microcantilevers, microhinges, microbridges                    123


































          The linear direct stiffness  is eventually found to be of the form:
















          where:







          The formulation given  here  allows for two end  segments of various  shapes,
          provided  they are identical and  of double  symmetry (as  the microhinges
          treated in  this  chapter). The  same  requirement of double symmetry  applies
          also to the  middle  segment, but  usually this can  be  selected as having
          constant cross-section.  A  check has been  performed for  this  model by
          assuming that all  segments have  identical  constant  rectangular cross-section
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