摘要
首先介绍了三维振动台的结构原理和变刚度调谐原理,建立了变刚度试验装置,研究了共振在变刚度系统中能量和振幅变化情况。实验表明在共振状态下能耗较低,在能耗降低一倍的情况下,振动强度反而比非共振状态大10倍以上。最后,对发动机叶片进行了强化抛光处理,结果表明:发动机叶片在共振状态下进行强化抛光处理,表面粗糙度和疲劳强度都得到了大幅度提高,且减少了加工时间,降低了能耗。
This paper introduced the structural and tuning principles of a three-dimensional vibration table, established variable stiffness experimental equipment and studied the role played by resonance in the energy and amplitude variation in a variable stiffness system. The experiment indicates that energy consumption is relatively low under resonance conditions. If energy consumption is one time less, vibration strength under resonance conditions is ten times bigger than that under non-resonance conditions. The strengthening and polishing treatment of engine blades under resonance conditions was also carried out. The results show that the treatment not only, greatly enhances surface coarseness and fatigue strength but also reduces time of processing and energy consumption.
出处
《机械科学与技术》
CSCD
北大核心
2006年第10期1254-1256,共3页
Mechanical Science and Technology for Aerospace Engineering
关键词
强化
抛光
振动台
共振
发动机叶片
strengthening
polishing
vibration table
resonance
engine blade
