基于非定常气流脉动的叶片动力学分析  

Dynamic analysis of blade based on the unsteady airflow pulsation

作　　者：谢远森[1] 李意民[1] 周忠宁[1] 孙婉[1] 

机构地区：[1]中国矿业大学机电学院,江苏徐州221008

出　　处：《矿山机械》2009年第9期27-30,共4页Mining & Processing Equipment

基　　金：江苏省自然科学基金项目资助(BK2005018);江苏省研究生科研创新计划项目(CX07B-061Z)

摘　　要：在考虑耦合流场与离心力条件下,建立了对应的叶片流固耦合系统的动力特性方程,并通过试验获得时旋风机叶片区域的径向气流脉动,对叶片振动进行了谐响应与应力瞬态分析。分析表明:在离心力与耦合流场作用下,叶片的振动存在稳定的范围,其应力与位移在特定频率力场作用下达到最大,而其分布则与叶片安装方式有关。The dynamic characteristic equations are established for a fluid-solid coupling blade system under the rotation stress and coupling-flow condition. Then obtain the radial airflow pulsation of the blade region in the counter-rotating fan through the experiment and carry on the transient and harmonic response analysis of the blade vibration. The results show that the blade vibration has a stable rang in the condition of the centrifugal foree and couplingfield, its stress and displacement will reach maximum during speeiftc frequency, but the blade distribution has direct relationship with the blade installation.

关 键 词：旋转应力 压力脉动 流固耦合 谐响应 瞬态分析 

分 类 号：TD441[矿业工程—矿山机电]