Dynamic response of coupled shaft torsion and blade bending in rotor blade system

被引：22

作者：

Lee, Hwanhee ^{[1
]}

Song, Ji-Seok ^{[1
]}

Cha, Seog-Ju ^{[2
]}

Na, Sungsoo ^{[1
]}

机构：

[1] Korea Univ, Dept Mech Engn, Seoul 136701, South Korea

[2] Korea South East Power Corp, Mech Engn Team, Seoul 135708, South Korea

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2013年 / 27卷 / 09期

关键词：

Assumed mode method; Lagrange equation; Natural frequency; Pre-twist angle; Rotor-blade system; Shaft torsional flexibility; NATURAL FREQUENCIES; ROTATING BEAMS; MODAL-ANALYSIS; VIBRATION; TURBINE;

D O I：

10.1007/s12206-013-0702-x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study develops a computational model for the dynamic characteristics of a rotor-blade system. The rotor-blade coupled model with pre-twisted blade attached to a rigid disk driven by a shaft is developed using the Lagrange equation in conjunction with the assumed mode method to discretize the blade deformation. The effects of axial shortening due to blade lagging deformation, centripetal force caused by the rotating blade, and gravity are included in the model. The coupled equation of motion is formulated based on the small deformation theory for the blade and shaft torsional deformation to obtain the dynamic characteristics of the system for various system parameters. Numerical simulations show that the pre-twist angle of the blade and the shaft torsional flexibility strongly influence the dynamic behavior of the rotor-blade system.

引用

页码：2585 / 2597

页数：13

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