Computer Aided Simulation as valid tool for sheet hydroforming process development

Prete, Antonio Del; Anglani, A.; Primo, Teresa; Spagnolo, A.

doi:10.1007/s12289-008-0340-5

Cited by 6 publications

(8 citation statements)

References 4 publications

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“…Thanks to the experimental testing conducted by the authors, it has been possible to validate the numerical results (Fig. 3), like exposed in [3], [4].…”

Section: Fig 2 Numerical Results Of Conf_0: Fld and Its Contour Mapmentioning

confidence: 89%

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Process Design for Hydroformed Tailored Blanks Technology through CAE Techniques

Prete

Papadia

Manisi

2011

KEM

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Ecological awareness and economic analysis force industry to decrease the weight of transportation vehicles and to achieve a higher product quality with a reduction of production costs [1]. Lightweight constructions made out of Tailored Blanks (TBs) and advanced manufacturing technologies, like sheet metal Hydromechanical Deep Drawing (HDD), help to reach these goals [1]. From this point of view, HDD techniques have been largely accepted by the industry [2] for the production of components characterized by: complex shapes, good surface quality and small residual stress. In this work, starting from previous studies of the same authors about hydroformed components with a redrawing area [3] [4], an original approach based on Thickness Percentage Reduction (TPR) distribution has been implemented to design a particular TBs for HDD applications. Numerical and experimental results about the studied test case have been allowed the verification of their correlation as well as the necessary reliability of the implemented process simulation methodology.

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“…Thanks to the experimental testing conducted by the authors, it has been possible to validate the numerical results (Fig. 3), like exposed in [3], [4].…”

Section: Fig 2 Numerical Results Of Conf_0: Fld and Its Contour Mapmentioning

confidence: 89%

“…In this study, a systematic approach of the backward tracing scheme [3] has been adopted to design the Tailored Blank shape when HDD is applied. It is well known, in fact, how one of the possible simulation results is the thicknesses map distribution after the forming process [6].…”

Section: Introductionmentioning

confidence: 99%

Process Design for Hydroformed Tailored Blanks Technology through CAE Techniques

Prete

Papadia

Manisi

2011

KEM

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“…Regarding process features and various blanks, hydroforming can be classified into sheet hydroforming and tube hydroforming. 2,3 In tube hydroforming, a relatively thin-walled tube is inflated by internal pressure and is forced to conform to the shape of die that surrounds it. 4 In the literature, there are several studies [5][6][7] which investigated tubular hydroforming numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Forming limit diagram of tubular hydroformed parts considering the through-thickness compressive normal stress

Hashemi

Abrinia

Assempour

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this study, the effect of a compressive normal stress has been considered in the determination of forming limit diagrams and forming limit stress diagrams to predict neck initiation failure in tube hydroforming of T-shaped parts. Computation of the forming limit diagrams and FLSDs is based on the generalized Marciniak and Kuczynski method to consider the existence of through-thickness compressive normal stress. The proposed forming limit diagrams and FLSDs were used in conjunction with ABAQUS/EXPLICIT finite element simulations to predict the onset of necking in tube hydroforming of T-shaped part. The amount of calibration pressure and axial feeding required to produce an acceptable part in finite element method was compared to published experimental data, and a satisfactory agreement between the FEM and test results has been achieved. Therefore, the present approach can be used as a reliable criterion to design tube hydroforming processes and reduce the number of costly trials.

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“…Previous research has discussed the determination of blank holder force constantly linear [1] and aims to prevent one of a defect cracks or wrinkles only.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Semi-Active the Blank Holder Force Control to Prevent Wrinkling and Cracking in Deep Drawing Process

Candra

Batan

Berata

et al. 2014

AMM

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This paper presents simulation of drawing force and thickness deformation in deep drawing which employs semi-active blank holder force system, to solve the problem of cracking and wrinkling. The method of slab with feed back control failure criteria, was employed to make the modeling system and the semi-active blank holder to prevent wrinkling and cracking in forming low carbon steel sheet, without lubrication (μ=0.4). In this study, the mechanical properties of the material were chosen since that they equivalent to those of low carbon steel with its thickness of 0.2 mm, k = 572 N/mm2, UTS = 391 N/mm2, yield stress = 309 N/mm2 and n = 0.2. The diameter and the depth of the cylindrical cup-shaped product were 40 mm and 10 mm, respectively. Results from simulation have shown that the semi-active blank holder system can control very responsive against changing of deformation condition. The optimum of initial blank holder force is approximately 3000 N up to 4000 N. In the early stages (initial stroke), blank holder force system could be responsive to prevent cracking, and at the end of the punch stroke, it is very effective to prevent wrinkling. Simulation of semi-active blank holder force control system is excellent in model formation to prevent cracking and wrinkling.

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Computer Aided Simulation as valid tool for sheet hydroforming process development

Cited by 6 publications

References 4 publications

Process Design for Hydroformed Tailored Blanks Technology through CAE Techniques

Process Design for Hydroformed Tailored Blanks Technology through CAE Techniques

Forming limit diagram of tubular hydroformed parts considering the through-thickness compressive normal stress

Simulation of Semi-Active the Blank Holder Force Control to Prevent Wrinkling and Cracking in Deep Drawing Process

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