Page 43 - Mechanics of Microelectromechanical Systems
P. 43

30                                                          Chapter 1







         where    is the strain energy stored in the component of Fig.  1.18 under the
         action of    The strain energy produced in  axial  loading can be  expressed
         from Eq. (1.71) in the form:








         The equilibrium equation in terms of axial loading is:







          The solution to the differential Eq. (1.101) is a second degree polynomial,
          which can be expressed as:





          By applying the boundary conditions:







          the distribution  function  is found to be:





          The tip  axial  force  can  be  determined by  using  Eqs. (1.99)  through
          (1.104) as:






          where the axial stiffness is:
   38   39   40   41   42   43   44   45   46   47   48