Combination of Three Sections of Beams of Experimental Modal Analysis Based on LabVIEW

Using theoretical vibration analysis and modal experiment investigation, base on LabVIEW soft, this paper exploits a dynamic test system which can sweeping quickly and accurately measuring multi-DOF system´s natural frequencies and mode of vibration, according to practical engineering-combination of three sections of beams, had tested for its modal analysis. Experimental results show that experimental modal obtain accurate and reliable data, have a high practical value.