Effect of prestrain paths on mechanical behavior of dual phase sheet steel

Le, Quochung; Kang, Hong Tae; Kridli, Ghassan T.; Khosrovaneh, Abolhassan; Yan, Benda

doi:10.1016/j.ijfatigue.2008.03.028

Cited by 38 publications

(30 citation statements)

References 16 publications

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“…However, Yan et al (2001) showed that the fatigue behaviors of prestrained and as-received IF steel components were different. Le et al (2009) also showed that the fatigue behaviors were different for prestrained and asreceived DP600 steel coupons. For better prediction of the In this study a mathematical model is proposed to predict the fatigue behavior of the material with forming effect, taking into account the effects of strain paths based on the strain-life equation.…”

Section: Introductionmentioning

confidence: 95%

“…For better prediction of the In this study a mathematical model is proposed to predict the fatigue behavior of the material with forming effect, taking into account the effects of strain paths based on the strain-life equation. This mathematical model is developed using fatigue properties (Le et al, 2009) obtained from test results of the asreceived condition coupled with prestrain levels in the length, width, and thickness of the test specimen. The applicability of the proposed strain-life equation is demonstrated using a simple stamping part which is subjected to various prestrain paths during metal forming process.…”

Section: Introductionmentioning

confidence: 99%

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Modified strain-life equation to consider the effect of different prestrain paths for dual phase sheet steel

Kang

Kridli

et al. 2009

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Modified strain-life equation to consider the effect of different prestrain paths for dual phase sheet steel

Kang

Kridli

et al. 2009

Journal of Materials Processing Technology

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“…They have shown this effect on the creep deformation, time of creep rupture and the rate of crack propagation. Le et al [2] have shown how the path of pre-straining could influence the tensile and fatigue properties of dual phase steels. Since the pre-strain changes the material flow stress, fracture toughness is thus changed depending on the amount of pre-strain [3].…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of elastoplastic modeling: application to one-dimensional loading of as-received and pre-strained materials

2012

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A constitutive modeling is proposed to describe the elastoplastic behavior of materials. The model response for uniaxial loading of as-received and pre-strained materials is investigated. The most important characteristic of the model for as-received material is the consideration of a von Mises yield criterion that is valid from onset of loading. The same concept as the one for as-received material is followed to deal with the elastoplastic behavior of pre-strained material. However, a proportionality concept is also introduced in this case to calculate the plastic deformation. After the implementation of the model in ABAQUS procedure by creation of an appropriate user material subroutine, the results of finite element analysis are studied and validated by some experimental results obtained from uniaxial test.

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“…automobile structural components, which experience cyclic loading in service; hence, knowledge related to the fatigue properties of sheet metals is important. Earlier works indicate that efforts have been made for the estimation of fatigue life [2][3][4][5] with insignificant emphasis on the understanding of the micromechanism of fatigue damage, i.e. initiation and growth of fatigue cracks at various microstructural locations.…”

Section: Introductionmentioning

confidence: 99%

Monotonic and cyclic damage in metallic sheets

Ray

Majumdar

Chakraborty

2010

Trans Indian Inst Met

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This paper aims to provide an account of some interesting features of damage in metallic sheets under monotonic and cyclic loading using the information and understanding developed through a series of experimental investigations conducted on interstitial free steels. The experiments primarily consisted of damage evaluation in un-notched and notched sheets vis-à-vis that in thick specimens under monotonic loading, and that on sheets by interrupted or continuous cyclic loading. Some salient observations indicate that: (i) void nucleation occurs in two different stages, originating from non-metallic inclusions and precipitates. The critical strain for void nucleation at precipitates (ε c ) is lower for sheet metals than that in thick specimens. (ii) ε c is a function of notch length in sheets, and the function assists to estimate the strength of particle/matrix interface, (iii) under cyclic loading, steel sheets exhibit non propagating microcracks below the endurance limit. Above the endurance limit slip bands promote formation of larger fatigue cracks primarily at ferrite grain boundaries. A series of grain boundary cracks link up to form meso-cracks, one of which grows to cause final failure and (iv) the growth of the macro-crack initially occurs in opening mode followed by its propagation in mixed mode through striations, intergranular cracking and through thickness necking prior to failure.

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Effect of prestrain paths on mechanical behavior of dual phase sheet steel

Cited by 38 publications

References 16 publications

Modified strain-life equation to consider the effect of different prestrain paths for dual phase sheet steel

Modified strain-life equation to consider the effect of different prestrain paths for dual phase sheet steel

Finite element analysis of elastoplastic modeling: application to one-dimensional loading of as-received and pre-strained materials

Monotonic and cyclic damage in metallic sheets

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