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Vibration control振动控制
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课程类型:教学课程
课程级别:本科
授课时间:Winter 2014
教学小组:S.P. Harsha1
课程评分:3+
所属院校:印度理工学院鲁尔基分校
Indian Institute of Technology Roorkee 所属系别:机械与工业工程系
Department of Mechanical and Industrial Engineering 课程介绍
The main objective of course is to presents fundamentals to a modern treatment of vibrations, placing the emphasis on analytical developments and computational solutions. This course will provide the detail knowledge about nonlinear and random vibration with fault diagnosis of machinery using vibration signature analysis. Contents: Review of free and forced vibrations with and without damping; Vibration isolation and taransmissibility; Undamped vibration absorbers; generalized coordinates and coordinate coupling; Orthogonality of modes; Free and forced vibration of multidegree of freedom systems with and without viscous damping; Lagrange’s equation; Holzer’s method. Solution of eigen value problem, transfer matrix and modal analysis. Self excited vibrations. Criterion of stability; Effect of friction on stability. Introduction to non-linear vibrations; Free vibrations with non-linear spring force or non-linear damping; Phase plane; Energy curves; Lienard’s graphical construction; Method of isoclines. Vibrations of strings; Free and forced longitudinal vibrations of prismatic bars; Ritz and Galerkin methods. Mathematical discriptions of stochastic proceses; Stationary and ergodicity; Gaussion random process, Correlation functions and power spectral density. Introduction to diagonastic maintenance and signature analysis.
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