Numerical simulation on impact-contact between the tips of a pair of blades

被引：0
|
作者：
马晓峰 [1 ,2 ]
刘占生 [1 ]
王贵龙 [1 ]
侯宪科 [1 ]
机构：
[1] School of Energy Science and Engineering,Harbin Institute of Technology
[2] Guocience & Tecdian Shnology Research Institute
来源：
Journal of Harbin Institute of Technology(New series) | 2011年 / 03期
关键词：
blade with tip; impact-contact; nonlinearity;
D O I：
暂无
中图分类号：
TG71 [刀具];
学科分类号：
080201 ;
摘要：
To study the dynamic characteristics and damping mechanism of impact-contact between the tips of blades further more,the impact-contact between the tips of a pair of blades was studied through numerical simulation.In this paper,the dynamic equation of contact-impact between the tips was established and Newmark direct integration method was adopted in numerical simulation.The nonlinear response characteristics and damping mechanism of impact-contact system are obtained.The results of numerical simulation were obtained as follows:As the clearance between blade shrouds is smaller,the vibration amplitude is smaller.The clearance between blade shrouds has a great influence on the input energy of the aerodynamic-excitation-vibration force.As the clearance of blade shrouds increases,the input energy of the aerodynamic-excitation-vibration force increases rapidly.
引用
收藏
页码：48 / 55
页数：8
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