Evaluation and analysis of the stress concentration factor reduction techniques on perforated plates using finite element method
So far, researchers have used several methods to calculate stress concentration factors. Such methods are categorized into three groups including analytical, numerical and experimental. Analytical methods are generally employed for very easy and non-complicated problem while numerical methods can be used for different and complicated geometries without considering time and cost limitations. In present study, stress concentration factors calculation was carried out in perforated plates under tensile loading using finite elements numerical method. Ultimately, some solutions were assessed and presented to reduce and optimize these factors and some economic and practical concepts were offered based on numerical analyses and modeling. In these structures, stress concentration can be decreased by such actions as material change, thickness change and the shells with variable thickness so that impact of the mentioned parameters were analyzed and assessed here in details. By an assessment on different methods of stress concentration reduction, the optimal method for stress concentration reduction was presented in perforated plates under tensile.
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