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<p>Stress concentration factor is a critical aspect in the failure assessment of structures and machine components. Curved plates have wide industrial applications, experiencing varied loading conditions and studies have been conducted to analyse the stress distribution, however, their behavior needs to be closely examined. The present study deals with the investigation of stress concentration factor and it’s mitigation in curved plates with circular singularities subjected to axial loading conditions. Finite Element Analysis simulations were used to analyze stress distribution in different geometries. The findings show that adding auxiliary holes reduce stress concentration to a large extent and the optimised mitigation is achieved when the diameter of the auxiliary hole is 0.9 times the diameter of the central hole. Additionally, the placement of these auxiliary holes is also a crucial factor, depicted as ‘δ’ and ‘γ’, as the distance between the central and auxiliary holes. The optimum values of ‘δ’ and ‘γ’ are also determined for various cases in&#xa0;curved&#xa0;plates. Three cases are experimented using Photoelasticity method to validate inclusion auxiliary holes in&#xa0;curved&#xa0;plates. The findings in this study induce valuable insights for engineers in various sectors such as aerospace, automotive, civil, marine, and biomedical industries, to understand the response of components under axial loading, thereby assisting them in optimising the design and performance of the components. The insights from this research provide valuable guidance for failure analysts and engineers in understanding stress behaviour and improving the structural integrity of components.</p>

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Parameters for Mitigation of Stress Concentration Factor in a Thin Curved Plate with Single Circular Hole Under Tensile Load

  • 期刊论文

  • 发表日期：

    2025年3月10日

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  • Ramit Chugh,
  • Shubhrata Nagpal,
  • Shubhashis Sanyal

摘要

Stress concentration factor is a critical aspect in the failure assessment of structures and machine components. Curved plates have wide industrial applications, experiencing varied loading conditions and studies have been conducted to analyse the stress distribution, however, their behavior needs to be closely examined. The present study deals with the investigation of stress concentration factor and it’s mitigation in curved plates with circular singularities subjected to axial loading conditions. Finite Element Analysis simulations were used to analyze stress distribution in different geometries. The findings show that adding auxiliary holes reduce stress concentration to a large extent and the optimised mitigation is achieved when the diameter of the auxiliary hole is 0.9 times the diameter of the central hole. Additionally, the placement of these auxiliary holes is also a crucial factor, depicted as ‘δ’ and ‘γ’, as the distance between the central and auxiliary holes. The optimum values of ‘δ’ and ‘γ’ are also determined for various cases in curved plates. Three cases are experimented using Photoelasticity method to validate inclusion auxiliary holes in curved plates. The findings in this study induce valuable insights for engineers in various sectors such as aerospace, automotive, civil, marine, and biomedical industries, to understand the response of components under axial loading, thereby assisting them in optimising the design and performance of the components. The insights from this research provide valuable guidance for failure analysts and engineers in understanding stress behaviour and improving the structural integrity of components.