摘要
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,可以有效地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 common phenomenon in engineering structures.Analyzing the system＇s natural frequencies and natural vibration types can avoid destructive resonance phenomenon in engineering structures effectively.The free beam is analyzed and simple and discrete MDOF model is made.Then through a experiment test,similar natural frequencies and natural vibration types of the free beam are achieved.To start with the modal parameter of a typical free beam,a technique to analyze more complex mechanisms＇ vibration is given.
出处
《北京联合大学学报》
CAS
2011年第2期34-37,共4页
Journal of Beijing Union University
关键词
简支梁
振动
模态参数
固有频率
固有振型
free beam
vibration
modal parameter
natural frequency
natural vibration type
