航空发动机质量特性参数建模与分析  

Modeling and Analysis of Mass Property Parameters for Aero-Engine

作　　者：田大可[1] 金路[2] 张德志[1] 刘旭阳[1] 

机构地区：[1]中航工业沈阳发动机设计研究所,辽宁沈阳110015 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《机械设计与制造》2016年第12期21-23,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51208314);辽宁省教育厅科学研究一般项目(L2013234)

摘　　要：为准确掌握航空发动机整机质量特性,基于齐次坐标变换方法,建立了一种发动机整机质量特性参数的数学模型。根据合力之矩定理,建立了发动机整机质量特性参数的基础理论模型,分析了影响整机质心计算精度的特征参数;采用机器人学中的齐次坐标变换方法,建立了任意局部坐标系下零部件质心的空间几何模型,建立了局部坐标系相对于主坐标系的变换矩阵,从而建立了精确的零部件质心数学模型。采用算例对模型进行了验证与分析,分析结果表明:该数学模型能够精确的计算发动机各零部件质心参数,模型简单,计算精度高。To master the mass property of aero-engine exactly, based on the method of homogeneous coordinate transformation, a model of mass property parameters for aero-engine is established. According to the principle of moments, a basic theory model of mass property parameters for aero-engine is established. Property parameters are analyzed. By using the method of homogeneous coordinate transformation, space geometry model of part centroid is established at any local coordinate system. In addition, transformation matrix of local coordinate system relative to home coordinate system is proposed. Then, a mathematical model of part centroid is established exactly. Model is validated and analyzed by an example, and the results show that this model can calculate the parameters of any part centroid exactly. The model has some advantages such as simple model and high calculation precision.

关 键 词：航空发动机 质量特性 质量 质心 齐次坐标变换 

分 类 号：TH16[机械工程—机械制造及自动化] V231.3[航空宇航科学与技术—航空宇航推进理论与工程]