阻尼连接叶片的动力特性研究  

Research on Dynamic Behavior of Damping-Bonded Blades

作　　者：季葆华[1] 王乐天[1] 李辛毅[1] 孟庆集[1] 刘万琨[1] 罗辑[1] 

机构地区：[1]西安交通大学,东方汽轮机厂

出　　处：《动力工程》1996年第5期45-49,共5页Power Engineering

摘　　要：研究了干摩擦阻尼器对阻尼叶片动力特性的影响。带有阻尼结构的叶片系统是一个非线性动力系统。文中推导了干摩擦阻尼力的实用矩阵表达式，给出了相应求解此非线性动力问题的有限元方法。根据文中所给的方法分析了２例正在服役的叶片，从分析结果总结出了影响阻尼叶片动力特性的阻尼器的主要参数，并得出：由于采用了阻尼结构，激振力的频率和幅值都可以影响阻尼叶片的振动特性。Abstract The influence of dry friction dampers on the dynamic behavior of damped blades is studied. Blade systems with damping construction constitute non-linear dynamic systems. A practical expression in matrix form is derived for dry friction forces and a respective finite element method for solving the non-linear dynamic equation given.Two examples of in-service blades are analyzed by the method as presented in the paper, and the damper's maid parameters which affect the behavior of the damped blades are deduced by its results, with the following conclusion: by a dopting a damping structure, both the frequency and the amplitude of exciting forces may affect the vibrational behavior of damped blades.

关 键 词：叶片 阻尼连接叶片 非线性 动力特性 汽轮机 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]