简支梁模态参数测定与分析

On Test and Analysis on the Model Parameters of Simply - supported Beam

振动是工程结构中一种普遍现象，分析系统的固有频率和固有振型，可以有效避免对工程结构造成最大破坏的共振现象。将简支梁简化为离散的多自由度模型，对其进行理论分析，再通过实验测试的方法，分别得到简支梁的固有频率和固有振型，结果大致相同。从分析典型的简支梁模态参数入手，为分析复杂机构的振动提供了参考方法。

The vibration is a popular phenomenon in engineering structures, analyzing the system of natural frequency and natural vibration type can effectively avoid resonance phenomenon caused maximum damage to engi- neering structure. This paper analyzes the vibration of the simple supported beam and makes it the discreted MDOF model and gets similar results in the natural frequencies and natural vibration types of the simple supported experiment test, which provides a reference for analyzing the complex vibration though the analysis of th modal parameters. beam by e typical