scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Integrating effect of forming in fatigue life prediction: review of present scenario and challenges

TL;DR: In this article, the residual stresses of sheet metal deformation during forming induces complex residual stresses in the component owing to its geometry and material anisotropy, which affect the durability of the component.
Abstract: Plastic deformation of sheet metals during forming induces complex residual stresses in the component owing to its geometry and material anisotropy. The residual stresses affect the durability of t...
Citations
More filters
Journal ArticleDOI
TL;DR: In this article, the incremental hole drilling (IHD) technique is tested to measure residual stresses, being able to reach a 2-mm measuring depth, and a commercial strain gage is used and calibrated using finite element model simulations.
Abstract: Ball-burnishing induces compressive residual stresses on treated materials by the effect of plastic deformation. The result is an increase in the fatigue life of the treated part, retarding the initiation of cracks on the surface. Compressive residual stresses have been previously measured by X-ray diffraction near the surface, revealing considerably high values at the maximum analyzed depth, in relation to other finishing processes such as shot peening. However, the maximum analyzed depth is very limited by using this technique. In this paper, the incremental hole drilling (IHD) technique is tested to measure residual stresses, being able to reach a 2-mm measuring depth. To that objective, a commercial strain gage is used and calibrated using finite element model simulations. A second Finite Element Model based on material removal rate is developed to obtain the equations to calculate the strain release through IHD. Finally, residual stresses are measured experimentally with that technique on two...

35 citations


Cites background from "Integrating effect of forming in fa..."

  • ...) [7], and a longer lifespan of industrial components can be expected, as explained by Hariharan and Prakash [8]....

    [...]

  • ...[7], and a longer lifespan of industrial components can be expected, as explained by Hariharan and Prakash [8]....

    [...]

Journal ArticleDOI
TL;DR: In this article, a robust multiobjective optimization based on evolutionary algorithm is proposed to minimize the error in yield stress and plastic strain ratio simultaneously and thereby overcomes the limitations in the approaches used before.
Abstract: The texture induced anisotropy of yield strength in cold rolled sheet metals is modeled using anisotropic yield criteria. The classical and other optimization methods used so far to determine the yield coefficients are limited by fixed set of experimental data, initial guess values, and pre-determined weight factors. A robust multiobjective optimization based on evolutionary algorithm proposed in this paper minimizes the error in yield stress and plastic strain ratio simultaneously and thereby overcomes the limitations in the approaches used before. The new approach is tested using Hill48 and Barlat89 yield criteria for five different materials from literature. The new approach is observed to improve the prediction capability of yield coefficients when compared to earlier approaches. The Pareto frontier obtained in the new approach can serve as a comparative tool to evaluate the accuracy of different yield criteria.

19 citations


Cites background from "Integrating effect of forming in fa..."

  • ...The complex mechanical behavior of different materials [5] and the demand for accurate modeling of forming process [2, 6, 7] have led to the development of several advanced yield functions [1, 8– 10]....

    [...]

  • ...Assuming orthotropic symmetry, several phenomenological models have been proposed in the past to describe the anisotropy of yield strength [1, 2]....

    [...]

Journal ArticleDOI
TL;DR: In this paper, the authors assess tensile and high cycle fatigue performance of dual-phase (DP590) steel subjected to uniaxial and equi-biaxial pre-strain.

15 citations

References
More filters
Journal ArticleDOI
TL;DR: In this paper, the anisotropy in the fatigue behavior of rolled Mg-3Al-1Zn alloy between the rolling direction and normal direction to the rolling plane was investigated.
Abstract: The anisotropy in the fatigue behavior of rolled Mg–3Al–1Zn alloy between the rolling direction and normal direction to the rolling plane was investigated. The {10-12} twinning–detwinning characteristics were found to play key roles in the anisotropic fatigue deformation behavior by inducing a change in the predominant plastic deformation mechanism, which controlled the flow stress and finally influenced the fatigue resistance by generating mean stress. Energy-based approach was successfully used to describe anisotropic fatigue life behavior.

37 citations


"Integrating effect of forming in fa..." refers background in this paper

  • ...Hong et al.(55) investigated fatigue behaviour of a rolled Mg– 3Al–1Zn alloy and observed the difference between fatigue behaviour in rolling and normal direction owing to twinning–detwinning characteristics of the HCP crystal structure....

    [...]

  • ...Effect of sheet metal anisotropy in fatigue Although the effect of mechanical properties and microstructure on the strain-life fatigue is widely studied, limited attempts have been made to understand the influence of anisotropy on the fatigue behaviour.54 Hong et al.55 investigated fatigue behaviour of a rolled Mg– 3Al–1Zn alloy and observed the difference between fatigue behaviour in rolling and normal direction owing to twinning–detwinning characteristics of the HCP crystal structure....

    [...]

Journal ArticleDOI
TL;DR: In this article, the plane stress description of orthotropy presented by Hill [1990] is revisited in an alternative form, and the alternative calibration methods are used to develop the mathematical form of the orthotropic representation.
Abstract: The plane stress description of orthotropy presented by Hill [1990. Constitutive modelling of orthotropic plasticity in sheet metals. J. Mech. Phys. Solids 38(3), 405–417] is revisited. In particular, the calibration methods are analysed in an alternative form. The alternative calibration methods are used to develop the mathematical form of the orthotropic representation. The new seven parameter yield criterion is shown to be more flexible than the current model without the need for additional test data. The usefulness of the model in describing aluminium, titanium and steel is also illustrated.

37 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of sulfur content and sulfide inclusions on fatigue behavior of steels with different sulfur and hardness levels under different loading directions was discussed and a modified Roessle-Fatemi equation was used to estimate the fatigue limit of the materials used, resulting in reasonable estimations in most cases.

36 citations


"Integrating effect of forming in fa..." refers background in this paper

  • ...The deformable sulphur inclusions (MnS) in steel can induce anisotropic effects in hot rolled steel, which in turn results in poor fatigue properties along transverse directions.(59,60) Most of the work discussed above and other similar work concentrated primarily on the experimental investigation of anisotropy effect....

    [...]

Journal ArticleDOI
TL;DR: In this article, a rotational-isotropic-kinematic (RIK) hardening model was proposed to predict the deformations under multi-axial and multi-path loadings in a phenomenological framework.

36 citations


"Integrating effect of forming in fa..." refers background in this paper

  • ...Such stress reversals cannot be modelled using conventional isotropic hardening.(121) Mixed hardening models, to account for stress reversals, are under research....

    [...]

Journal ArticleDOI
TL;DR: In this article, a new yield criterion for orthotropic sheet metals under plane-stress conditions is proposed, which is derived from the one proposed by Barlat and Lian in 1989.

36 citations


"Integrating effect of forming in fa..." refers methods or result in this paper

  • ...Banabic et al.28 further enhanced the flexibility of the BBC 2004 criterion by adding weight coefficients to the model....

    [...]

  • ...The yield loci predicted by three different criteria, Hill 48, Barlat 89 and BBC 2004 are compared in Figure 3 with experimental results of steel plate coldrolled elongation (SPCE) mild steel.(27) It is found that the best fit of experimental data is obtained from the BBC 2004 criterion followed by Barlat 89....

    [...]

  • ...Independently, Banabic et al.26 proposed a new criterion for a plane stress condition by extending the Barlat 89 criterion....

    [...]

  • ...Banabic et al.(27) modified the criterion by including a biaxial anisotropy coefficient (referred to as BBC 2004)....

    [...]

  • ...Banabic et al.27 modified the criterion by including a biaxial anisotropy coefficient (referred to as BBC 2004)....

    [...]