Table 4.

Comparisons with theoretical and numerical values of Type C and Type D.

	Type	Type C			Type D
ε		Theoretical Value	Simulation Value	Error Rate	Theoretical Value	Simulation Value	Error Rate
In-phase displacement difference (µm)	0.97%	0.00627	0.0068	6.14%	0.0525	0.0561	6.42%
	1.83%	0.0118	0.0125	5.60%	0.0986	0.105	6.10%
Anti-phase displacement difference (µm)	0.97%	0.0106	0.0114	7.02%	0.0423	0.0453	6.62%
	1.83%	0.0200	0.0212	5.66%	0.0795	0.0844	5.81%