PSI - Issue 28

ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 28 (2020) 734–742

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Abstract This work investigates the application of the strain energy density method to rounded V-notches under mode I loading conditions and to components without stress concentrators through finite element models that do not involve the construction of the control volume in the preprocessing phase of the finite element analysis. The application of the strain energy density method to components without stress concentrators like sharp V-notches requires, according to the conventional procedure of the method, two different numerical simulations; the first simulation defines the point of maximum of the first principal stress along the notch fillet; the second simulation calculates the strain energy density value within the control volume built using the position of the first principal stress maximum evaluated in the first simulation. Several numerical analyses, with changing the notch angle, the notch radius, the control volume radius and the mesh refinement, were carried out to evaluate the error in calculating the strain energy density value through the new procedure presented in the present work whose main advantages are to simplify the method and to decrease the calculation time that, dealing with complex geometries, is reduced by 50% requiring only one simulation instead of the two requested by the conventional procedure © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Keywords: Strain Energy Density Method; Finite Element Analysis; Control Volume Abstract This work investigates the application of the strain energy density method to rounded V-notches under mode I loading conditions and to components without stress c cen rators through finite element models that o not involve th construction of the control volume in the preprocessing pha e of th fini e element analysis. The application of he strain energy density method t components without stress concentrators like sharp V- otches r quires, according to the conventional proc dure of the ethod, tw different numerical simulatio s; the first simulatio defines the point of maximum of the first principal str ss along the no ch fillet; the second simulation calculates the train energy den ity value within the contr l volume built using th position of the first principal stress maximum evaluated in the first simulation. Sever l numer cal analyses, with changing the notch angle, the notch radius, the control volu e radius n the mesh ref nement, wer carried out to evaluate the error in calculating he strain en rgy density valu through the new procedure pres nted in the present wo k wh se main advantag s a e to simplify the method and to decrease th calc lation time that, ealing with compl x geometries, is reduced by 50% r qui ing only one simulati n i stead of the two requested by th conventional procedure © 2020 The Auth rs. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integri y Society (ESIS) ExCo Keywords: Strain Energy Density Method; Finite Element Analysis; Control Volume 1st Virtual European Conference on Fracture Volume free strain energy density method for applications to blunt V-notches Pietro Foti a *, Seyed Mohammad Javad Razavi a , Liviu Marsavina b , Filippo Berto a a Norwegian University of Science and Technology, MTP Gløshaugen, Richard Birkelands vei 2B, Trondheim 7491, Norway b University Politehnica Timisoara, Department Mechanics and Strength of Materials, Timisoara 300222, Romania 1st Virtual European Conference on Fracture Volume free strain energy density method for applications to blunt V-notches Pietro Foti a *, Seyed Mohammad Javad Razavi a , Liviu Marsavina b , Filippo Berto a a Norwegian University of Science and Technology, MTP Gløshaugen, Richard Birkelands vei 2B, Trondheim 7491, Norway b University Politehnica Timisoara, Department Mechanics and Strength of Materials, Timisoara 300222, Romania

Nomenclature E Nomenclature E

Young’s modulus Young’s modulus

* Corresponding author. E-mail address: pietro.foti@ntnu.no * Corresponding author. E-mail address: pietro.foti@ntnu.no

2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 2452-3216 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo 10.1016/j.prostr.2020.10.085