An analytical model of fracture process zone to explain why crack-tip opening angle works

Lu, Longkun; Liu, Zhanli; Wang, Tao; Zhuang, Zhuo

doi:10.1016/j.engfracmech.2020.107054

Cited by 10 publications

(1 citation statement)

References 39 publications

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“…CTOA or CTOD is largely limited in its measuring methods, simultaneously taking the characteristics of time‐consuming and significant subjectivity 25 . The concept of fracture strain suffers from the characteristic distance in its definition, 26 while the energy dissipation rate is seriously reliant upon the dimension and geometry of materials and structures, and it makes the data transferability difficult between the experimental samples and practical structures 15 . Furthermore, EWF ceases to be valid in some places in which negative values of EWF appear 27 .…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the correlation between critical storage of elastic strain energy and crack extension in elastic–plastic materials

Chang

Yang

Liu

et al. 2022

Fatigue Fract Eng Mat Struct

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To better solve the issues of steady crack extension with broad plasticity and the crack-related problems in general yielding situations when the assumption of small-scale plastic yielding fails, it is of great significance to further study the macroscopic mechanism of crack extension. In this paper, a new insight into the elastic-plastic crack extension is proposed on the foundation of critical storage of elastic strain energy (SESE). The feasibility of the new methodology is validated by designing and implementing two different experimental schemes in three typical elastic-plastic materials. The experimental results indicate that the critical SESE decreases linearly with the increase of crack length and U-notch initial length. Besides, the SESE release rate is obtained through experimental and theoretical methods, and they are in the same order of magnitude and their value sequences are also accordant with all tested materials. Therefore, this investigation provides a new approach to characterizing crack extension in elastic-plastic materials.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on the correlation between critical storage of elastic strain energy and crack extension in elastic–plastic materials

Chang

Yang

Liu

et al. 2022

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

A rate-dependent model and its user subroutine for cohesive element method to investigate propagation and branching behavior of dynamic brittle crack

Wang

et al. 2021

Computers and Geotechnics

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The numerical asymptotic solution to initial condition problem of preexisting plane-strain hydraulic fracture with fluid lag

Смирнов

et al. 2020

Engineering Fracture Mechanics

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An analytical model of fracture process zone to explain why crack-tip opening angle works

Cited by 10 publications

References 39 publications

Experimental investigation on the correlation between critical storage of elastic strain energy and crack extension in elastic–plastic materials

Experimental investigation on the correlation between critical storage of elastic strain energy and crack extension in elastic–plastic materials

A rate-dependent model and its user subroutine for cohesive element method to investigate propagation and branching behavior of dynamic brittle crack

The numerical asymptotic solution to initial condition problem of preexisting plane-strain hydraulic fracture with fluid lag

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