Optimization Of Tube Hydroforming With Consideration Of Manufacturing Effects On Structural Performance

Kirby, David; Roy, Subir; Kunju, Ravi

doi:10.1063/1.2011285

Cited by 5 publications

(2 citation statements)

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“…Since most of the forming simulations use adaptive meshing, the forming results should be mapped to suitable mesh for structural fatigue analysis. 105 The presently available mapping algorithm has several restrictions; only one stress or strain component can be mapped, 106,107 whereas six stress components and six strain components are needed to describe the complete stress–strain state of the component. A mapping algorithm for complete mapping of stress and strain components is still under research.…”

Section: Finite Element Modelling Of Forming and Fatiguementioning

confidence: 99%

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

Hariharan

Prakash

2012

Proceedings of the Institution of Mechanical Engineers, Part B:

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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 the components. Fatigue life estimation incorporating the forming-induced residual stresses is limited. In the present work, the state-of-the-art in modelling sheet metal forming, residual stress estimation and fatigue life prediction are reviewed. The challenges in integrating the residual stress owing to forming and fatigue life prediction are brought out. The parameters influencing the sheet metal forming, residual stresses and fatigue are discussed to emphasize the complexity of the present problem.

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Section: Finite Element Modelling Of Forming and Fatiguementioning

confidence: 99%

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

Hariharan

Prakash

2012

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…De Kanter [3] analyzed the crashworthiness of straight tubes experimentally and by using analytical and numerical methods. Kirby et al [7] observed an increase of about 9 % of the absorption energy of a hydroformed part during a crash simulation when the forming results were mapped. Grantab et al [4], Oliveira et al [5] and Zheng et al [6] have used successfully the finite element method to evaluate the crashworthiness of bent tubes.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy

D’Amours¹,

Rahem²,

Mayer³

et al. 2007

AIP Conference Proceedings

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The motivation to reduce overall vehicle weight within the automotive sector drives the substitution of lightweight materials such as aluminium alloys for structural components. Such a substitution requires a significant amount of development to manufacture structurally parts such that the energy absorption characteristics are not sacrificed in the event of crash. The effects of the manufacturing processes on the crash performance of automotive structural components must be better understood to ensure improved crashworthiness. This paper presents results of an experimental and numerical investigation of the crash response and energy absorption properties of impacted hydroformed aluminium alloy tubes. Crash experiments on hydroformed tubes were performed using a deceleration sled test at the General Motors Technical Center. Results from axial crush testing showed that an important parameter that influences the energy absorption characteristics during crash was the thickness reduction caused by circumferential expansion of the tube during hydroforming. It was found that that the energy absorption decreased as the corner radius decreased, which results because of increased thinning. Sensitivity studies of end feeding parameters, such as end feed level and profile, were carried out to evaluate their impact on the energy absorption of the aluminium tubes.

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Influence of forming parameters on the crash performance of capped cylindrical tubes using LS-DYNA follow-on simulations

Kumar

Shrivaathsav²

2019

Int J Interact Des Manuf

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Optimization Of Tube Hydroforming With Consideration Of Manufacturing Effects On Structural Performance

Cited by 5 publications

References 0 publications

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

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

Crashworthiness of Aluminium Tubes; Part 2: Improvement of Hydroforming Operation to Increase Absorption Energy

Influence of forming parameters on the crash performance of capped cylindrical tubes using LS-DYNA follow-on simulations

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