The Influence on Modal Parameters of Thin Cylindrical Shell under Bolt Looseness Boundary

Table 9

Mode shapes of TCS under BLB with different looseness numbers.

Modal; order	No looseness; ()	Loosen; 1 bolt; ()	Loosen; 2 bolts; ()	Loosen; 3 bolts; ()	Loosen; 4 bolts; ()
1
2
3
4
5
6
7
8