Development of a damage-based criterion for ductile fracture prediction in sheet metal forming

Tang, Chak Yin; Chow, C. L.; Shen, Wei; Tai, Wei Hua

doi:10.1016/s0924-0136(98)00442-7

Cited by 24 publications

(7 citation statements)

References 20 publications

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“…The extension of the previous model to damage anisotropy is not straightforward. The damage variable may be a fourth-order tensor (Chaboche, 1981;Krajcinovic, 1985;Tang et al, 1999;Armero and Oller, 2000;Hammi et al, 2004) or a second-order tensor (Cordebois and Sidoroff, 1982;Murakami, 1983;Wang, 1987, 1988a,b;Voyiadjis and Kattan, 1999;Lemaitre et al, 2000), which is easier to handle. One of the earliest generalization of Lemaitre's ductile damage model to anisotropic damage was done by Chow and Wang (1987) in a very consistent way.…”

Section: Anisotropic Damagementioning

confidence: 99%

Continuum Models of Ductile Fracture: A Review

Besson

2009

International Journal of Damage Mechanics

486

247

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The past 20 years have seen substantial work on the modeling of ductile damage and fracture. Several factors explain this interest. (i) There is a growing demand to provide tools which allow to increase the efficiency of structures (reduce weight, increase service temperature or load, etc.) while keeping or increasing safety. This goal is indeed first achieved by using better materials but also by improving design tools. Better tools have been provided which consist (ii) of material constitutive equations integrating a physically-based description of damage processes and (iii) of better numerical tools which allow to use the improved constitutive equations in structural computations which become more and more realistic. This article reviews the material constitutive equations and computational tools, which have been recently developed to simulate ductile rupture.

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Section: Anisotropic Damagementioning

confidence: 99%

Continuum Models of Ductile Fracture: A Review

Besson

2009

International Journal of Damage Mechanics

486

247

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“…Therefore, it can be concluded that the decrease of damage work below the ln Z value of 24 is due to the rapid decrease of flow stress. There has been various damage models suggested and applied for ductile fracture prediction of metal forming [7][8][9][10]15,16]. In the present study, we use the plastic work form proposed by Freudenthal [7], which is computationally simple since it is composed of effective stress and effective strain terms only.…”

Section: Critical Damage Failure Criterionmentioning

confidence: 99%

Temperature and strain rate effect incorporated failure criteria for sheet forming of magnesium alloys

Kim

Han³

2008

Materials Science and Engineering: A

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“…In this study, a localized necking criterion was developed based on the theory of acoustic tensor. In the same manner, Tang et al (1999) used the second-order continuity tensor to investigate the state of anisotropic damage of ductile sheet metal during metal forming processes. In this study, the damage variable and its principal values can be determined from the change in effective elastic behaviour.…”

Section: Introductionmentioning

confidence: 99%

The development of continuum damage mechanics-based theories for predicting forming limit diagrams for hot stamping applications

Lin

Mohamed

Balint

et al. 2013

International Journal of Damage Mechanics

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This paper presents a novel plane-stress continuum damage mechanics (CDM) model for the prediction of the different shapes of forming limit diagrams (FLCs) for aluminium alloys under hot stamping conditions. Firstly, a set of uniaxial viscoplastic damage constitutive equations is determined from tensile experimental data of AA5754 at a temperature range of 350-550 C and strain rates of 0.1, 1.0 and 10 s À1 . The tests were carried out on Gleeble materials simulator (3800). Based on the analysis of features of FLCs for different materials forming at different temperatures, a plane-stress damage equation is proposed to take account the failure of materials at different stress-state sheet metal forming conditions. In this way, a set of multiaxial viscoplastic damage constitutive equations is formulated. The model is calibrated from the FLC data at temperature of 350 C and strain rate of 1.0 s À1 for AA5754. A good agreement has been achieved between the experimental and numerical data. The effect of the maximum principal stress, effective stress and hydrostatic stress on the materials failure features and on the shape of FLCs is studied individually and in combination. Using the newly developed plane-stress unified viscoplastic damage constitutive equations, the FLC of materials can be predicted at different temperatures and strain rate forming conditions.

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Development of a damage-based criterion for ductile fracture prediction in sheet metal forming

Cited by 24 publications

References 20 publications

Continuum Models of Ductile Fracture: A Review

Continuum Models of Ductile Fracture: A Review

Temperature and strain rate effect incorporated failure criteria for sheet forming of magnesium alloys

The development of continuum damage mechanics-based theories for predicting forming limit diagrams for hot stamping applications

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