The Void Growth Model and the Stress Modified Critical Strain Model to Predict Ductile Fracture in Structural Steels

Kanvinde, Amit; Deierlein, Gregory G.

doi:10.1061/(asce)0733-9445(2006)132:12(1907)

Cited by 282 publications

(110 citation statements)

References 16 publications

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“…It has to be noted that expression (17) has been obtained disregarding the non-linear term of kinematic hardening. Despite having a first approximation of the analytical expression that provides the tangent stiffness tensor, in many occasions the calculation of the partial derivatives of the yield and potential functions is not straightforward.…”

Section: Stress-strain Relation and Consistency Factormentioning

confidence: 99%

“…Another interesting approach based on damage accumulation is the one proposed by Kanvinde and Deierlein ( [6], [17], and [18]). These authors, in order to account for the effects of void growth and coalescence that drive the fracture of metallic materials, propose a model that calculates the void growth and compares it with a critical value to detect material failure.…”

mentioning

confidence: 99%

“…This parameter is obtained experimentally. The initial formulation developed for monotonic cases (Void Growth Model -VGM [17]) is extended to cyclic loads by differentiating the void growth obtained in the tensile and compressive regions of the load cycle. Therefore, the void growth in the Cyclic Void Growth Model (CVGM) can be obtained as [18]: …”

mentioning

confidence: 99%

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Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law

Martı́nez

Oller

Barbu

et al. 2015

International Journal of Fatigue

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This paper presents a plastic-damage formulation and a new isotropic hardening law, based on the Barcelona plastic damage model initially proposed by Lubliner et al. in 1989 [1], which is capable of predicting steel failure due to Ultra Low Cycle Fatigue (ULCF). This failure mechanism is obtained when the material is subjected to cyclic loads and breaks after applying a very low number of cycles, usually less than hundreds. The failure is driven by the plastic response of the material, and it is often predicted based on the plastic strains applied to it. The model proposed in this work has been formulated with the objective of predicting accurately the plastic behavior of the material, as well as its failure due to ULCF. This is achieved taking into account the fracture energy dissipated during the whole loading process. This approach allows the simulation of ULCF when it takes place due to regular cyclic loads or non-regular cyclic loads, as it is the case of seismic loads. Several simulations are conducted in order to show the capabilities of the formulation to reproduce the mechanical response of steel when it is subjected to regular and non-regular cyclic loads. The formulation is validated comparing the numerical results with several experimental tests made on X52 steel specimens. The agreement between the numerical and experimental results asses the validity of the proposed model to predict the plastic behavior of steel and its failure due to Ultra Low Cycle Fatigue.

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Section: Stress-strain Relation and Consistency Factormentioning

confidence: 99%

mentioning

confidence: 99%

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Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law

Martı́nez

Oller

Barbu

et al. 2015

International Journal of Fatigue

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“…Kavinde et al (2006) proposes the "Stress Modified Critical Strain Model (SMCS)" to evaluate the initation of ductile fracture as a function of multiaxial plastic strains and stresses. In SMCS criteion, the critical plastic strain ( ) is determined by the following expression:…”

Section: The Ductile Fracture Criterionmentioning

confidence: 99%

Prediction of residual strength of corroded tensile steel plates

et al. 2011

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Recently, the damage due to deterioration of materials in many old steel bridge structures, which causes unavoidable strength reduction, is becoming a serious problem in Japan and all over the world. Therefore the remaining load-carrying capacities must be carefully evaluated in order to understand the feasibility of those steel structures for the current usage and to evaluate the necessity of retrofitting of selected corroded members to strengthen the existing structure. This paper proposes a new method to calculate the remaining yield and tensile strengths by using a concept of representative effective thickness (t eff ) with the correlation of initial thickness (t 0 ) and the maximum corroded depth (t c,max ), based on the results of many tensile coupon tests of actual corroded plates. Further, the feasibility of establishing of an analytical methodology to predict the residual strength capacities of a corroded steel member with fewer number of measuring points is also discussed.

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“…The void growth model 352 Yuanqing Wang et al / International Journal of Steel Structures, 11(3), 351-366, 2011 (VGM) developed by Rice and Tracey (1969) and the stress modified critical strain (SMCS) model based on the research of Hancock and Mackenzie (1976) showed promise in predicting ductile fractures. The VGM and SMCS models for a variety of American and Japanese steels were calibrated by smooth notched tensile (SNT) tests and validated by blunt notched compact tension tests conducted by Kanvinde and Deierlein (2006). Subsequent applications to a series of twelve pull-plate tests that represented net section conditions in bolted and reduced beam section connections had shown ability of the VGM and SMCS models to predict ductile fracture initiation in steel components (Kanvinde and Deierlein, 2007).…”

Section: Introductionmentioning

confidence: 99%

Fracture prediction of welded steel connections using traditional fracture mechanics and calibrated micromechanics based models

et al. 2011

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Fracture resistance is of primary concern in the seismic design of beam-to-column connections in steel moment resisting frames (SMRFs). Micromechanics based fracture models such as the void growth model (VGM) and the stress modified critical strain (SMCS) model provide alternative approaches for ductile fracture prediction by relating micro-mechanisms of void nucleation, growth and coalescence to macroscopic stresses and strains. In this study, the VGM and SMCS models were calibrated for Q345 structural steel and the corresponding weld, through smooth notched tensile (SNT) tests and complementary continuum finite element models (FEMs). A series of seven local connections representing beam-to-column connections in SMRFs were tested under monotonic tensile loading and the specimen elongations at fracture critical point were obtained. The traditional J-integral based fracture mechanics and micromechanics based fracture models (VGM and SMCS) were applied to predict fracture in each tested local connection through refined three-dimensional FEM. Comparisons between these numerical approaches and experimental observations in prediction of fracture critical displacement, indicated that the VGM and SMCS models were able to predict fracture of welded connection with good accuracy, while the J-integral based approach resulted in quite conservative fracture prediction. This paper has bridged the gap between small-scale material tests and large-scale structural experiments in fracture evaluations.

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The Void Growth Model and the Stress Modified Critical Strain Model to Predict Ductile Fracture in Structural Steels

Cited by 282 publications

References 16 publications

Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law

Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law

Prediction of residual strength of corroded tensile steel plates

Fracture prediction of welded steel connections using traditional fracture mechanics and calibrated micromechanics based models

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