Nonlinear modeling for dynamic analysis of a rotating cantilever beam

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• 作者：Hyungrae Kim ; Jintai Chung
• 关键词：Nonlinear modeling ; Rotating cantilever beam ; Stretch deformation ; Non ; Cartesian deformation variables ; Nonlinear boundary conditions
• 刊名：Nonlinear Dynamics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：86
• 期：3
• 页码：1981-2002
• 全文大小：1,864 KB
• 刊物类别：Engineering
• 刊物主题：Vibration, Dynamical Systems and Control
  Mechanics
  Mechanical Engineering
  Automotive and Aerospace Engineering and Traffic
  
• 出版者：Springer Netherlands
• ISSN：1573-269X
• 卷排序：86

文摘

This paper proposes a nonlinear model for more accurate and efficient dynamic analysis of a rotating cantilever beam with elastic deformation. The proposed nonlinear model is described by partial integro-differential equations with non-Cartesian deformation variables, i.e., the stretch, chordwise and flapwise deformations. After the equations of motion are discretized by using the mode superposition method, dynamic responses are computed by applying the Newmark time integration method to the discretized equations. To show the accuracy and efficiency of the proposed model, convergence characteristics and dynamic responses for the present model are compared with those for previous models. This study shows that the proposed model not only yields good accuracy and efficiency in terms of computation, but also overcomes the limitations of a previous conventional nonlinear model expressed by Cartesian variables.