Numerical simulation of fatigue crack propagation under biaxial tensile loadings with phase differences

Koji Gotoh, Toshio Niwa, Yosuke Anai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Fatigue crack propagation under the biaxial tensile loading, which loading directions are normal and parallel to the initial crack position, is highlighted in this study. Most of in-service structures and vessels are subjected to many types of loading. Generally, these loadings have different axial components with different phases. However, the structural integrities of structures and vessels are evaluated according to design codes based on theoretical and experimental investigations under a uniaxial loading condition. Most of these codes are based on the S-N curves approach. An approach that does not use S-N curves has been favored by researchers, with the fracture mechanics approach preferred for evaluating the fatigue life of structures. An advanced fracture mechanics approach was developed based on the Re-tensile Plastic zone Generating (RPG) stress criterion for fatigue crack propagation. In this study, fatigue crack propagation tests under biaxial loading with six different phase and loading conditions are performed and the effect of the phase difference under biaxial loading is evaluated. A numerical simulation method of fatigue crack propagation based on the RPG stress criterion under different biaxial loading phase conditions is presented and compared to measured data.

Original languageEnglish
Pages (from-to)53-70
Number of pages18
JournalMarine Structures
Volume42
DOIs
Publication statusPublished - Jun 1 2015

Fingerprint

Fatigue crack propagation
Computer simulation
Fracture mechanics
Plastics
Structural integrity
Fatigue of materials
Cracks

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Mechanical Engineering
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Numerical simulation of fatigue crack propagation under biaxial tensile loadings with phase differences. / Gotoh, Koji; Niwa, Toshio; Anai, Yosuke.

In: Marine Structures, Vol. 42, 01.06.2015, p. 53-70.

Research output: Contribution to journalArticle

@article{b02bb7436bdf492e99d8a10e1d921505,
title = "Numerical simulation of fatigue crack propagation under biaxial tensile loadings with phase differences",
abstract = "Fatigue crack propagation under the biaxial tensile loading, which loading directions are normal and parallel to the initial crack position, is highlighted in this study. Most of in-service structures and vessels are subjected to many types of loading. Generally, these loadings have different axial components with different phases. However, the structural integrities of structures and vessels are evaluated according to design codes based on theoretical and experimental investigations under a uniaxial loading condition. Most of these codes are based on the S-N curves approach. An approach that does not use S-N curves has been favored by researchers, with the fracture mechanics approach preferred for evaluating the fatigue life of structures. An advanced fracture mechanics approach was developed based on the Re-tensile Plastic zone Generating (RPG) stress criterion for fatigue crack propagation. In this study, fatigue crack propagation tests under biaxial loading with six different phase and loading conditions are performed and the effect of the phase difference under biaxial loading is evaluated. A numerical simulation method of fatigue crack propagation based on the RPG stress criterion under different biaxial loading phase conditions is presented and compared to measured data.",
author = "Koji Gotoh and Toshio Niwa and Yosuke Anai",
year = "2015",
month = "6",
day = "1",
doi = "10.1016/j.marstruc.2015.03.003",
language = "English",
volume = "42",
pages = "53--70",
journal = "Marine Structures",
issn = "0951-8339",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Numerical simulation of fatigue crack propagation under biaxial tensile loadings with phase differences

AU - Gotoh, Koji

AU - Niwa, Toshio

AU - Anai, Yosuke

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Fatigue crack propagation under the biaxial tensile loading, which loading directions are normal and parallel to the initial crack position, is highlighted in this study. Most of in-service structures and vessels are subjected to many types of loading. Generally, these loadings have different axial components with different phases. However, the structural integrities of structures and vessels are evaluated according to design codes based on theoretical and experimental investigations under a uniaxial loading condition. Most of these codes are based on the S-N curves approach. An approach that does not use S-N curves has been favored by researchers, with the fracture mechanics approach preferred for evaluating the fatigue life of structures. An advanced fracture mechanics approach was developed based on the Re-tensile Plastic zone Generating (RPG) stress criterion for fatigue crack propagation. In this study, fatigue crack propagation tests under biaxial loading with six different phase and loading conditions are performed and the effect of the phase difference under biaxial loading is evaluated. A numerical simulation method of fatigue crack propagation based on the RPG stress criterion under different biaxial loading phase conditions is presented and compared to measured data.

AB - Fatigue crack propagation under the biaxial tensile loading, which loading directions are normal and parallel to the initial crack position, is highlighted in this study. Most of in-service structures and vessels are subjected to many types of loading. Generally, these loadings have different axial components with different phases. However, the structural integrities of structures and vessels are evaluated according to design codes based on theoretical and experimental investigations under a uniaxial loading condition. Most of these codes are based on the S-N curves approach. An approach that does not use S-N curves has been favored by researchers, with the fracture mechanics approach preferred for evaluating the fatigue life of structures. An advanced fracture mechanics approach was developed based on the Re-tensile Plastic zone Generating (RPG) stress criterion for fatigue crack propagation. In this study, fatigue crack propagation tests under biaxial loading with six different phase and loading conditions are performed and the effect of the phase difference under biaxial loading is evaluated. A numerical simulation method of fatigue crack propagation based on the RPG stress criterion under different biaxial loading phase conditions is presented and compared to measured data.

UR - http://www.scopus.com/inward/record.url?scp=84925962769&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925962769&partnerID=8YFLogxK

U2 - 10.1016/j.marstruc.2015.03.003

DO - 10.1016/j.marstruc.2015.03.003

M3 - Article

VL - 42

SP - 53

EP - 70

JO - Marine Structures

JF - Marine Structures

SN - 0951-8339

ER -