Two-Degree Vibration Analysis of a Horizontal Axis Turbine Blade by Finite Differential Methods. (24th April 2018)

• Record Type: Journal Article
• Authors: Zhu, Youfeng; Zang, Hongyu; Kong, Xiaofei; Ban, Peng
• Other Names: Zappino Enrico Academic Editor.
• Is Part Of: Shock and vibration. Volume 2018(2018)
• Publication Date: 2018-04-24
• Subjects: Shock (Mechanics) -- Periodicals; Vibration -- Periodicals; 534.5
• DOI: 10.1155/2018/6087295
• Languages: English
• ISSNs: 1070-9622

Abstract

Abstract : Two-degree vibration partial differential equations of large horizontal axis turbine blades were established by Kallesøe's model and Greenberg unsteady aerodynamic theory. By means of the finite difference discretization and cantilever beam boundary condition, the equations of blades can be simplified as a general vibration system. Then a linear stationary state space on the system was built. The blade tip vibration in autonomous and nonautonomous system can be simulated by MATLAB vibration toolboxes in time domain. The convergent, flutter, and divergent vibration curves were plotted in the directions of lead-lag and flapping.