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Mixed-mode Stress Intensity Factors for Tubes under Pure Torsion Loading

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  • Additional Information
    • Contributors:
      orcid:0000-0002-0479-4827; https://scienti.colciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001306510; https://scienti.colciencias.gov.co/gruplac/jsp/visualiza/visualizagr.jsp?nro=00000000002805
    • Publication Date:
      2018
    • Subject Terms:
      CRAI-USTA Bucaramanga
    • Abstract:
      A pesar de parecer una combinación geometría-carga común, no existe ni solución analítica ni numérica para el Factor de Intensificación de Esfuerzos en tubos fisurados sometidos a torsión pura. Normas como API 579/ASME FFS, BS 7910 o handbooks no incluyen este caso. Existe un sinnúmero de soluciones para combinaciones carga-geometría basadas en FEM o funciones de peso, pero no para una para tubería bajo torsión pura. Este trabajo muestra curvas de KI, KII, and KIII para fisuras pasantes obtenidas con simulaciones en ANSYS ® para tubos delgados bajo torsión pura con una ranura horizontal, calculados por medio de la integral J. Adicionalmente, de KI, KII, and KIII son calculados usando el desplazamiento relativo de dos puntos opuestos a los bordes de la grieta y detrás de la punta de esta usando ecuaciones de la Mecánica de Fractura Lineal Elástica (LEFM en inglés) para la apertura de la boca de la grieta (COD en inglés) y Desplazamiento de la Punta de la Grieta (CTSD en inglés) obtenidos con una segunda e independiente modelación numérica. Los resultados se comparan con valores reportados en literatura que fueron obtenidos por medio de la técnica de la Correlación de Imágenes Digitales (DIC en inglés) para grietas con crecimiento por fatiga. ; Although it seems like a common load-geometry configuration, there is neither an analytical nor a numerical solution for Stress Intensity Factors (SIF) in cracked tubes under pure torsion. Standards such as API 579, BS 7910 or handbooks do not present such case. There is plenty of solutions based on FEM or weight functions calculations for an extensive load-geometry combinations, but not for tubes under pure torsion. This paper shows curves of KI, KII, and KIII for through-wall cracks obtained with ANSYS simulations for slim tubes, under pure torsion with a rounded horizontal slit, numerically calculated via J-integral. Additionally KI, KII, and KIII are calculated using relative displacement between two points along the crack lips using Linear Elastic Fracture Mechanics ...
    • File Description:
      application/pdf
    • Relation:
      H. Tada, P. Paris, and G. Irwing, The Stress Analysis of Cracks Handbook. ASME, 2000.; Y. Murakami, Stress Intensity Factor Handbook. New York: Pergamon Press, 1986.; A. Prior, D. Rooke, and D. Cartwright, Compendium of Stress Intensity Factors. London: UK, Ministry of Defence, 1985.; S. Laham and R. Ainsworth, Stress Intensity Factor and Limit Load Handbook. Brithish Energy, 1998.; Y. Yang, “Linear elastic fracture mechanics-based simulation of fatigue crack growth under non- proportional mixed-mode loading,” Technischen Universität Darmstadt, 2014.; J. Harter, “K-Solutions for Through Cracks Under Biaxial Loading,” in AFGROW Workshop 2016, 2016.; Y. Hos, “Numerical and experimental investigation of crack growth in thin-walled metallic structures under nonproportional combined loading,” Technischen Universität Darmstadt, 2017.; M. Vormwald, Y. Hos, J. J. . Freire, G. L. . Gonzáles, and Diaz, “Crack tip displacement fields measured by digital image correlation for evaluating variable mode-mixity during fatigue crack growth,” Int. J. Fatigue, vol. 113, 2018.; M. L. Williams, “On the Stress State at the Base of a Stationary Crack,” J. Appl. Mech., vol. 24, no. march, pp. 109–114, 1957.; J. R. Rice, “A Path Independent Integral and the Approximate Analysis of Strain Concentration by Notches and Cracks,” J. Appl. Mech., vol. 35, no. 2, pp. 379–386, 1968.; M. R. Molteno and T. H. Becker, “Mode I – III Decomposition of the J -integral from DIC Displacement Data,” Strain, vol. 51, no. 6, pp. 492–503, 2015.; J. F. Yau, S. S. Wang, and H. T. Corten, “A Mixed-Mode Crack Analysis of Isotropic Solids Using Conservation Laws of Elasticity,” J. Appl. Mech., vol. 47, no. 2, p. 335, 1980.; M. Gosz and B. Moran, “An interaction energy integral method for computation of mixedmode stress intensity factors along non-planar crack fronts in three dimensions,” Eng. Fract. Mech., vol. 69, no. 3, pp. 299–319, 2002.; P. A. Wawrzynek, B. J. Carter, and L. Banks-Sills, “The M-integral for computing stress intensity factors in generally anisotropic materials,” 2005.; S. Kibey, H. Sehitoglu, and D. A. Pecknold, “Modeling of fatigue crack closure in inclined and deflected cracks,” Int. J. Fatigue, vol. 129, no. 3, pp. 279–308, 2004.; Díaz Rodríguez, J. G., Nazaré Marques, L. F., Guzmán, R. E. (2018). Mixed-Mode Stress Intensity Factors for Tubes under Pure Torsion Loading. Key Engineering Materials, 774, 373-378. DOI: https://doi.org/10.4028/www.scientific.net/KEM.774.373; http://hdl.handle.net/11634/18684; https://doi.org/10.4028/www.scientific.net/KEM.774.373
    • Accession Number:
      10.4028/www.scientific.net/KEM.774.373
    • Online Access:
      http://hdl.handle.net/11634/18684
      https://doi.org/10.4028/www.scientific.net/KEM.774.373
    • Rights:
      CC0 1.0 Universal ; http://creativecommons.org/publicdomain/zero/1.0/
    • Accession Number:
      edsbas.6D0887E7