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Nonlinear Vibration Lecture Note

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Name of Notes : – Nonlinear Vibration Lecture Note

Introduction

In this study, the nonlinear vibration and stability of a simply supported axially moving Rayleigh viscoelastic beam equipped with an intermediate nonlinear support are investigated. The type of considered nonlinearity is geometric and is due to the axial stretching. The Kelvin–Voigt model is used to regard the beam internal damping.

The Hamilton’s principle is employed to derive the governing equations and corresponding boundary conditions. The multiple scales method is applied to the dimensionless form of the governing equations and the nonlinear frequencies, time response of the system for two cases of the axial velocity fluctuation frequency are obtained. The stability of the system is investigated via solvability condition and Routh–Hurwitz criterion. Some case studies are accomplished to demonstrate the effect of rotary inertia, axial velocity and parameters of intermediate support on the system response, critical velocity and the system stability.

Furthermore, the variation of the first two resonance frequencies with respect to mean axial velocities for different locations of the intermediate support are investigated. It is found that by moving the intermediate support from one end of the beam to its midpoint, the region in which the first mode undergoes static instability, shrinks. Moreover, although rotary inertia impressively decreases the natural frequencies, intermediate support has the dominant effect on increasing the natural frequencies.

Modules / Lectures

  • Introduction
  • Derivation of nonlinear equation of motion
  • Approximate methods for solving nonlinear equations
  • Stability and bifurcation analysis
  • Numerical Techniques
  • Applications Nonlinear vibration of mechanical systems

Additional information

Product Name

Nonlinear Vibration Lecture Note

Product Size

7.48 MB

Format

File Format

File Category

DEPARTMENT/COURSE

Need For

College, Competition, Entrance, Exams, PSU, Semester, University

Product Type

Written By

Prof. S.K. Dwivedy

Provided By

IIT Guwahati

Uploaded By

Roop Chandra

Languages

English

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