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International Journal of

Recent Trends in Engineering

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International Journal of Recent Trends in Engineering (IJRTE)

ISSN 1797-9617

Volume 1, Number 5, May 2009

Issue on Mechanical Engineering

Page(s): 137-141

Studies on Effect of Change in Dynamic Behavior of Crack using FEM

K.Hari Prasad, M.Senthil Kumar

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Abstract

This paper investigates the accuracy of predicting the dynamic response by finite element modeling of structures with cracks. Steel and composite materials are widely used in various construction elements and composites in particular have increased substantially over the past few years. These materials are subjected to various types of damage, mostly cracks and delaminations. These result in local changes of the stiffness of elements from such materials and consequently their dynamic characteristics are altered.

The cracks are modeled as such in case of stress analysis to study the stress pattern at those local regions of crack, while in case of dynamic analysis an equivalent model is built with many assumptions. While there are many literatures available on these, there is literally none that has investigated the effect on the results of the analysis with such models.

Index Terms

delaminations, stiffness, crack, dynamic analysis

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