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Fracture Analysis of Three Dimensional Elliptical Crack for Al7075-T651 Plate with Holes


Affiliations
1 Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, No.162, Poonamalle High Road, Velappanchavadi, Chennai - 600077, Tamil Nadu, India
 

Objectives: The paper deals with the study on analysis of Elliptical Crack for Al7075-T651 for three Dimensional Elliptical crack emanating from hole of the plate. Methods/Statistical Analysis: The impact of Crack shape and location with respect to various tensile loads on stress intensity factor is analysed. The crack in two holes of the plate is differentiated into different cases and they are analyzed for stress intensity factor. The crack case is formed with respect to the location of the through and part through crack in the model. Findings: The stress intensity factor of the crack geometry is attained by Ansys and the results are compared with Polynomial equation derived by displacement Extrapolation method. The paper also analyses the stress intensity factor along with parametric angle and Beta function of through elliptical crack model for various loads. Application/Improvements: The Stress Intensity factor value obtained can be used in finding the fatigue behaviour of materials under various loading conditions and improvements can be made by further improvement in the geometry of the plate.

Keywords

Al 7075-T651, Beta Function, Displacement Extrapolation, Elliptical Crack, Fatigue, Stress Intensity Factor.
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  • Fracture Analysis of Three Dimensional Elliptical Crack for Al7075-T651 Plate with Holes

Abstract Views: 203  |  PDF Views: 0

Authors

A. Sivasubramanian
Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, No.162, Poonamalle High Road, Velappanchavadi, Chennai - 600077, Tamil Nadu, India
G. Arunkumar
Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, No.162, Poonamalle High Road, Velappanchavadi, Chennai - 600077, Tamil Nadu, India

Abstract


Objectives: The paper deals with the study on analysis of Elliptical Crack for Al7075-T651 for three Dimensional Elliptical crack emanating from hole of the plate. Methods/Statistical Analysis: The impact of Crack shape and location with respect to various tensile loads on stress intensity factor is analysed. The crack in two holes of the plate is differentiated into different cases and they are analyzed for stress intensity factor. The crack case is formed with respect to the location of the through and part through crack in the model. Findings: The stress intensity factor of the crack geometry is attained by Ansys and the results are compared with Polynomial equation derived by displacement Extrapolation method. The paper also analyses the stress intensity factor along with parametric angle and Beta function of through elliptical crack model for various loads. Application/Improvements: The Stress Intensity factor value obtained can be used in finding the fatigue behaviour of materials under various loading conditions and improvements can be made by further improvement in the geometry of the plate.

Keywords


Al 7075-T651, Beta Function, Displacement Extrapolation, Elliptical Crack, Fatigue, Stress Intensity Factor.



DOI: https://doi.org/10.17485/ijst%2F2016%2Fv9i34%2F116539