一种叶片干摩擦阻尼器耦合振动分析的二维局部摩擦模型  

Two-dimensional micro slip model for analyzing coupled vibration of turbine blade with dry friction damper

作　　者：何冰冰[1] 任兴民[1] 何尚文[2] 秦卫阳[1] 杨永锋[1] 邓旺群[3] 

机构地区：[1]西北工业大学振动工程研究所,西安710072 [2]郑州大学力学与工程科学学院,郑州450001 [3]中国航空动力机械研究所,湖南株洲412002

出　　处：《振动与冲击》2014年第13期194-197,209,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(11272257);航空科学基金(20112108001)

摘　　要：从一维局部滑动模型和轨迹跟踪法出发,采用带滑动触点的并联弹簧来模拟二维平面运动时叶片-阻尼器间的干摩擦接触,提出一种二维局部滑动摩擦模型。推导了各种摩擦接触情形下的摩擦力计算公式,通过仿真深层次揭示了二维局部滑动的规律。结果表明,二维局部滑动与一维局部滑动相比既有一致又有本质不同,二维局部滑动模型可用于叶片干摩擦阻尼器耦合振动特性的分析。Based on the one-dimensional micro slip model and trajectory-tracing method,a two-dimensional micro slip friction model to analyze coupled vibration of turbine blades was presented by introducing parallel springs with sliding contact points to simulate the contact condition.The formula of friction force for all friction contact states was deduced. The mechanism of two-dimensional micro slip was deeply revealed by simulations.The conclusions drawn from the analyses show that the two-dimensional micro slip is of both consistency and essential difference as compared with one-dimensional micro slip and that the two-dimensional micro slip model can be well used to analyze,the coupled vibration of dry friction damper.

关 键 词：涡轮叶片 干摩擦阻尼 一维局部滑动模型 二维局部滑动模型 耦合振动 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]