International Journal of Fracture Mechanics

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Coarse-mesh evaluation of mode I stress intensity factor
International Journal of Fracture Mechanics - Tập 27 - Trang R67-R70 - 1985
V. A. Zilberetein, I. Sprung
The unzipping model of fatigue crack growth and its application to a two-phase steel
International Journal of Fracture Mechanics - Tập 17 - Trang 157-168 - 1981
C. Y. Yang, H. W. Liu
The unzipping analysis, based on the alternate shear deformation process of two intersecting shear planes at a crack tip, is extended to study fatigue crack growth in a two-phase martensitic-ferritic steel. The unzipping crack increment Δa uz is directly related to ΔK and ΔJ in the case of small scale yielding. It is preferrable to use Δa uz is directly related to ΔK and ΔJ in the case of small sc...... hiện toàn bộ
Explicit finite element modeling of static crack propagation in reinforced concrete
International Journal of Fracture Mechanics - Tập 141 - Trang 357-372 - 2006
Rena C. Yu, Gonzalo Ruiz
We propose a methodology to model complex fracture processes in reinforced concrete beams subjected to static loading. The discrete cohesive approach, accompanied by an insertion algorithm, is adopted and a modified dynamic relaxation method is chosen as an alternative solver. The concrete matrix and steel re-bars are modeled explicitly; the connection in between is represented by means of interfa...... hiện toàn bộ
Relationship between local and global characterizing parameters of stress triaxiality constraint in crack tip regions
International Journal of Fracture Mechanics - Tập 45 - Trang R45-R48 - 1990
Sun Jun
Mixed mode cohesive law
International Journal of Fracture Mechanics - Tập 141 - Trang 549-559 - 2006
J. L. Högberg
A traction-separation relation to model the fracture process is presented. The cohesive law captures the linear elastic and softening behaviour prior to fracture. It also allows for different fracture parameters, such as fracture energy, strength and critical separation in different mode mixities. Thus, the fracture process in mode I (peel), in mode II (shear) or in mixed mode (a combination of pe...... hiện toàn bộ
Biological Structures Mitigate Catastrophic Fracture Through Various Strategies
International Journal of Fracture Mechanics - Tập 135 - Trang 187-197 - 2005
R. Ballarini, R Kayacan, F.-J. Ulm, T. Belytschko, A. H. Heuer
Gao et al. (PNAS, 100, 5597–5600 (2003)) have argued that load-bearing mineralized hard tissues, including bones, shells, and teeth, are nanocomposites, in which the mineral phase has nanoscale dimensions that ensure optimum strength and flaw tolerance. In particular, it has been claimed that the thickness of these brittle building blocks, being smaller than a critical size, h ...... hiện toàn bộ
Quasi-static anti-plane shear crack propagation in nonlinear strain-limiting elastic solids using phase-field approach
International Journal of Fracture Mechanics - Tập 227 - Trang 153-172 - 2021
Hyun C. Yoon, Sanghyun Lee, S. M. Mallikarjunaiah
We study a quasi-static evolution of anti-plane crack with the nonlinear strain-limiting model using the phase-field approach. The nonlinear strain-limiting models, a subclass of the implicit constitutive relations, allow the linearized strain value to remain small even if the stress value tends to infinity. To compute the quasi-static crack, we solve the constrained energy minimization for the no...... hiện toàn bộ
An analytical model for DCB/wedge tests based on Timoshenko beam kinematics for accurate determination of cohesive zone lengths
International Journal of Fracture Mechanics - Tập 222 Số 1 - Trang 137-153 - 2020
Azab, Marc, Parry, Guillaume, Estevez, Rafael
In this work, an analytical model consisting of Timoshenko beams coupled with a cohesive zone is used in order to analyze the extent of the cohesive fracture process zone within mechanical systems displaying beam-like features. This is the case, for example, for the double cantilever beam (DCB) specimen or for the wedge test specimen. The predictions of the model are displayed under the form of di...... hiện toàn bộ
A new mechanism in hydrogen-enhanced fatigue crack growth behavior of a 1900-MPa-class high-strength steel
International Journal of Fracture Mechanics - Tập 177 - Trang 141-162 - 2012
Junichiro Yamabe, Takuya Matsumoto, Saburo Matsuoka, Yukitaka Murakami
This paper presents a new mechanism controlling the acceleration of fatigue crack growth of a hydrogen-charged high-strength steel (bearing steel SAE52100, σ ult > 1, 900MPa, HV = 569). Three- dimensionally complicated shape of a primary crack and secondary cracks were observed in hydrogen- charged specimens. Marked acceleration of fatigue crack growth in the presence of hydrogen w...... hiện toàn bộ
Computational methods based on an energy integral in dynamic fracture
International Journal of Fracture Mechanics - Tập 27 - Trang 229-243 - 1985
T. Nakamura, C. F. Shih, L. B. Freund
Developments in the use of the crack tip energy flux integral in computational dynamic fracture mechanics over the past few years are reviewed. An expression for the crack tip energy flux in terms of near tip mechanical fields which is valid for general material response is derived. It is then demonstrated that certain useful energy integrals may be extracted from the general result by invoking th...... hiện toàn bộ
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