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A study of multiple cracks on dynamic characteristic and stress intensity factor in cantilever beams

Md Janis, Mohd Azim (2015) A study of multiple cracks on dynamic characteristic and stress intensity factor in cantilever beams. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Two dimensional finite element models of multiple cracks cantilever beam were established and the dynamic characteristic of the model were studied. The model was developed by using ANSYS and the finite element mesh model was divided into six nodes or eight nodes plane element by using PLANE183. The dynamic characteristic of the cantilever beam were simulated and discussed under the difference crack size and crack location. The mode shape behaviour showed increased trend when the cracks exists in cantilever beam. The natural frequency of cantilever beam were dropped and the shape behavior were changed when the cracks exists. The natural frequency was decreased when the crack size increased while the natural frequency increased as the crack location far away from the fixed end cantilever beam. On the basis, using the fracture mechanics and finite element method, the stress intensity factors were analyzed when the cracks exists in the cantilever beam. The stress intensity factors were studied under changes of cracks size and cracks location. The model was simulated by finite element software and the results were collected and analyzed. These studies establish good information for multiple cracks identification and fracture analysis of cantilever beam.

Item Type: Thesis (Masters)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Depositing User: Normajihan Abd. Rahman
Date Deposited: 09 Mar 2016 08:08
Last Modified: 09 Mar 2016 08:08
URI: http://eprints.uthm.edu.my/id/eprint/7730
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