摘要
针对航空发动机液压弯管振动情况的特殊性及其复杂的工作环境,利用试验测试及仿真的方法研究航空弯管结构参数对其流固耦合振动特性的影响。研究结果表明:对于不锈钢液压弯管随着内表面粗糙度降低,管路振动幅度和噪声明显降低,而铝合金弯管利用磁力研磨加工后其振幅和噪声变化不显著,同时验证了不锈钢硬质材料的航空液压弯管内表面在经磁力研磨加工前后其固有频率均高于铝合金弯管的固有频率,并且液压弯管的角度、长度等因素在软硬质材料中均对弯管振动特性产生明显的影响。
Aiming at the particularity of the vibration condition of aero-engine hydraulic bending pipe and its complicated working environment, the influence of structural parameters of aviation elbow on its fluid-solid coupling vibration characteristics is studied by means of test and analysis. The results show that the vibration amplitude and noise of the stainless steel hydraulic elbow are significantly reduced with the decrease of the inner surface roughness, while the amplitude and noise of the aluminum alloy elbow are not significantly changed by magnetic grinding, and the stainless steel is verified. At the same time, The natural frequency of the inner surface of the aviation hydraulic elbow of the material is higher than the natural frequency of the aluminum alloy elbow before and after the magnetic grinding process. the data indicates that the angle and length of the hydraulic elbow will be bent in the soft and hard materials. The tube vibration characteristics have a significant effect.
作者
杨同光
窦金鑫
陈晔
于晓光
张彤
YANG Tongguang;DOU Jinxin;CHEN Ye;YU Xiaoguang;ZHANG Tong(Institute of Mechanit al Engineering,Liaoning University of Science and Technology,Anshan Liaoning 114051,China;School of Mechanical Engineering and Automation,Liaoning University of Technology,Jinzhou Liaoning 121001,China)
出处
《机械设计与研究》
CSCD
北大核心
2020年第1期152-157,共6页
Machine Design And Research
基金
国家自然科学基金资助项目(51775257)。
关键词
液压弯管
振动特性
磁力研磨
试验研究
hydraulic elbow
vibration characteristics
magnetic grinding
