Vibration and Constitutive Relations of Viscoelastic Cantilever Beam of HTPB Propellant

Table 4

Sixth-order modal and frequency table.

Order	Frequency (Hz)	Damping ratio (%)	Participatory method
1	8.08	3.35	PolyMAX
2	17.30	3.75	PolyMAX
3	85.31	2.98	PolyMAX
4	148.04	4.22	PolyMAX
5	169.60	4.55	PolyMAX
6	238.06	3.97	PolyMAX