6.12 SUMMARY OF ELEMENT MATRICES FOR ONE-DIMENSIONAL FINITE ELEMENTS

Element matrices of one-dimensional finite elements for various cases considered can be summarized as follows.

  1. Element stiffness matrix for a truss/spring element:

    (in the local co-ordinate system)

     

    images

     

    images

     

  2. Element stiffness matrix for a plane truss element:

    (in the global co-ordinate system)

     

    images

     

     

  3. Element stiffness matrix for a space truss element in the global co-ordinate ...

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