Use two bar elements to model each member of the truss of Example 11.12 and approximate the three lowest natural frequencies of the truss.

Example 11.12:
Use the finite-element method to approximate the lowest natural frequency for the truss of Figure 11.16(a). Use one bar element for each truss member. 

Figure 11.16(a):

Transcribed Image Text:

M 2 PAL 0 0 == 6 0 0 0 0 0 ooo O 0 0 0 0 0 0 K 0 0 EA 4 1 0 0 0 0 0 ooo O ooo O 0 0 0 0 0 (a) 0 0 0 0