Free Vibration of Stepped Beam with Multiple Transverse Cracks

Rohini, B (2015) Free Vibration of Stepped Beam with Multiple Transverse Cracks. MTech thesis.

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Abstract

The present study outlines free vibration analysis of uniform and stepped beam subjected with single to multiple cracks using Finite Element Method (FEM) in MATLAB environment. The crack considered is transverse crack which open in nature. Due to the presence of crack, the total flexibility matrix is established by adding local additional flexibility matrix to the flexibility matrix of the corresponding intact beam element .The local additional flexibility matrix is obtained from Linear Elastic Fracture Mechanics theory. An experimental study is carried out to check the accuracy of the numerical results. Mild steel specimens of square area of cross section are considered for the experiment and the experimental results are compared with numerical analysis using Finite Element Method (FEM) in MATLAB environment. The results obtained from experimental are checked for accuracy with the present analysis by plotting non-dimensional frequencies for first three modes as function of crack depth ratios for different locations of cracks.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Free vibration, Stepped beam, Crack, Finite element method, Experiment
Subjects:Engineering and Technology > Civil Engineering > Structural Engineering
Divisions: Engineering and Technology > Department of Civil Engineering
ID Code:7773
Deposited By:Mr. Sanat Kumar Behera
Deposited On:18 Sep 2016 11:08
Last Modified:18 Sep 2016 11:08
Supervisor(s):Sahu, S K

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