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Vibrational Analysis of cracked beam: A review

Publication Date : 10/07/2015

Author(s) :

Bhagyashri Darkunde , A. B. Gaikwad.

Conference Name :
4th International Conference on Recent Trends in Engineering & Technology(ICRTET-2015) July 2-4,2015 Organized by SNJB's KBJ College of Engineering,Chandwad,Nashik,Maharashtra,India

Abstract :

In this paper we discuss the issues and challenges of research work that was important to structure, machine life and human safety. For the last number of years, a considerable amount of research work has been undertaken to investigate the failure in structures. Crack is the most important parameter for structure failure or machine damage. A cantilever when subjected to harmonic loading, if there is any crack in it, then the crack will open and closes alternatively in every cycle of loading. This phenomenon is known as „crack breathing‟ and such type of crack is known as „breathing crack‟. Our present work is to analyze their models using a finite element package. To simulate the breathing cracks a small displacement frictionless contact problem between the two crack faces. The crack opens when the normal forces at the crack face are tensile. A displacement based finite element method in conjunction with the proposed crack model permit modeling of cracks of arbitrary size and at arbitrary locations. Cracks are present in the structure due to various reasons like loading condition, type of loading, material Properties etc. and it has been observed that most of the structural Members fail due to the presence of cracks. The cracks are developed mainly due to fatigue loading and Cracks initiate catastrophic failures. The presences of cracks change the physical characteristics of a structure which is directly affecting the Dynamic behavior of the system.

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