Numerical Analysis of Two I-shaped GFRP Composite Bridge with Corrugated Webs

Table 5

Mode frequencies: FE model (straight webs) vs. FE model (corrugated webs).

Mode no.	Shape	FE model (straight webs) (Hz)	FE model (corrugated webs) (Hz)
1	Flexure	7.96	7.43
2	Torsion	14.35	14.03
3	Flexure	27.77	26.23
4	Torsion	35.77	34.86