Research Article

Free Vibration of Composite Thin-Walled Beams with Chordwise Asymmetric Closed Cross-Sections

Table 6

Mass matrix of Model A and Model C.
(a)

CUS & CAS: and

123456
1
2
3
4
5
6Sym.

(b)

CUS & CAS: or

123456
1
2
3
4
5
6Sym.