Embedded Electromechanical Impedance and Strain Sensors for Health Monitoring of a Concrete Bridge

Table 3

Comparisons for natural frequencies and periods between ANSYS and MIDAS.

Mode	Mode types	MIDAS		ANSYS		(%)
		Period	Frequency	Period	Frequency
1	First antisymmetric; transverse bending	1.177	0.85	1.15	0.87
2	First symmetric; transverse bending	1.172	0.853	1.031	0.97
3	Second antisymmetric; vertical bending	0.924	1.082	0.938	1.066
4	Second symmetric; transverse bending	0.751	1.332	0.74	1.351
5	Second symmetric; vertical bending	0.581	1.72	0.521	1.921
6	Second antisymmetric; transverse bending	0.394	2.54	0.366	2.734