简支梁模态参数测定与分析

he vibration is a common phenomenon in engineering structures.And the vibration analysis of the simple supported beam with cross-section is a common tool about the vibration of engineering. This paper analyzes the simple supported beam and makes it the discreted MDOF model. Then through a method of the experiment test. It can get the natural frequency and the natural vibration type respectively.Two methods have roughly the same results of the modal parameter of the simple supported beam.Analyse the corresponding system of natural frequencies and natural vibration types.That can avoid the largest destructive resonance phenomenon to engineering structures effectively. That means avoid resonance.Start with the modal parameter of the typical of the simple supported beam, which offered a reference method to analyze the complex mechanism.?????