Study on the Influence of the Internal Elastic Constraint Stiffness on the Vib-Acoustic Performance of a Coupled Plate-Cylindrical Shell System

Table 1

Natural frequencies of a cylinder with clamp boundary conditions.

m	n	Flügge theory [21]	Zhang et al. [22]	Zhang et al. [23]	Present solution
1	1	0.0344	0.03487	0.03488	0.03295
	2	0.01204	0.01176	0.01173	0.01167
	3	0.00722	0.00708	0.00711	0.00710
	4	0.00905	0.00902	0.00895	0.00905
	5	0.01377	0.01377	0.01412	0.01385
2	1	0.08484	0.08724	0.08485	0.07966
	2	0.03162	0.03155	0.03176	0.03066
	3	0.01603	0.01586	0.01585	0.01572
	4	0.01233	0.01224	0.01232	0.01224
	5	0.01484	0.01482	0.01486	0.01489