两柔性梁碰撞振动类型的实验研究

An Experimental Study on Possible Types of Vibro Impacts between Two Elastic Beams

基于对两弹性部件碰撞振动的理论及数值研究，设计了两柔性梁碰撞实验来研究碰撞振动类型．在实验中观察到亚谐、超谐、概周期、混沌等多种碰撞振动类型．此外，发现系统存在类似“频率锁定”性质的碰撞振动，以及同时存在性质相异的碰撞行为。

On the basis of the theroetical and numerical studies for the vibro impacts between two elastic components, an experimental setup consisting of two vibro impacting beams was designed for observing some possible types of vibro impact motions. It was observed that the system may exhibit various types of vibro impact motions such as subharmonic, superharmonic, quasi periodic and chaotic motions. In addition, a new type of vibro impact motion, which exhibited some property of frequency locking, was found. Experiments also showed the possibilities for some vibro impact motions of mixture type.