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Estimation of Stress Intensity Factor of Multiple Inclined Centre Cracks under Biaxial Loading

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Abstract

All mechanical components are usually subjected to several manufacturing operations such as primary processing, machining, and finishing operations. During these operations, it is possible for the flaws to be introduced in the component either internally or on the external surface. In this situation, the reliability and safety assessment of the component in the presence of flaws can be achieved using fracture mechanics tool. This tool aids in analysing the severity of crack situation and its stability for the given loading conditions using certain fracture parameters. In this work, the stress intensity factor (SIF) analysis of a 2D rectangular plate with a centre crack (through the thickness) subjected to biaxial loading is performed through simulation. The numerical model is validated using analytical results available in the literature. The influence of parameters such as biaxial loading factor, ratio of crack length to width of the plate, inclination of crack, number of cracks on the SIFs is investigated.

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Abbreviations

2a :

Total centre crack length

b :

Distance between the two adjacent cracks

W :

Width of the plate

L :

Length of the plate

α :

Angle of inclination of crack with X-axis

B :

Biaxial loading factor

σ :

Stress along Y-axis

Bσ :

Stress along X-axis

KI, KII :

Mode I and Mode II Stress Intensity Factors, respectively

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Authors and Affiliations

  1. Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, 690525, India

    S. Arunkumar & V. K. Nithin

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  1. S. Arunkumar
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  2. V. K. Nithin
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Correspondence to S. Arunkumar.

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Arunkumar, S., Nithin, V.K. Estimation of Stress Intensity Factor of Multiple Inclined Centre Cracks under Biaxial Loading. J Fail. Anal. and Preven. 20, 2040–2058 (2020). https://doi.org/10.1007/s11668-020-01019-0

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  • DOI: https://doi.org/10.1007/s11668-020-01019-0

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