Adaptive FEM simulation for prediction of variable blank holder force in conical cup drawing

Sheng, Z. Q.; Jirathearanat, Suwat; Altan, Taylan

doi:10.1016/j.ijmachtools.2003.11.001

Cited by 113 publications

(66 citation statements)

References 10 publications

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“…As the result, the trend of VBHF trajectories predicted by Sheng et al [5] is in agreement with that predicted by Cao and Boyce.…”

Section: Introductionsupporting

confidence: 89%

“…However, towards the end of the punch stroke, the VBHF trajectory predicted by Sheng et al [5] rapidly increased, while Cao and Boyce's VBHF trajectory decreased, due to the difference of state variables. It is considered that Hardt and Fenn [7], and Sim and Boyce [8] provided the basic idea for the real-time blank holder force control with PI and PID controllers.…”

Section: Introductionmentioning

confidence: 83%

“…[9,10]. The validity of each of these research efforts has been examined through numerical simulation and experiment [2][3][4][5]7]. In these research efforts, the technique that is employed to measure wrinkling and tearing is an important issue for numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

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A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing

Kitayama

Hamano

Yamazaki

et al. 2010

Int J Adv Manuf Technol

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In deep drawing, a low blank holder force (BHF) can cause wrinkling, while a high BHF can lead to tearing. Thus, it is important to determine the appropriate BHF to be utilized in the forming process. In this study, a variable blank holder force (VBHF) approach to deep drawing is employed, and a simple closed-loop type algorithm is developed to obtain the VBHF trajectory.The proposed algorithm is divided into two phases. The objective of the first phase is to check wrinkling and tearing. In this phase, a low BHF, which is the causes of wrinkling, is used as the initial BHF; it is then increased to prevent wrinkling. The algorithm is terminated when tearing occurs. In a numerical simulation, the distance between the die and the blank holder is used to measure wrinkling. On the other hand, the thickness of the blank is used to determine the tearing.Next, in the second phase, the deviations in thickness are examined. Wrinkles are also checked in the second phase. By iterating the above two phases, the VBHF trajectory can be obtained. One of the advantages of the VBHF is that it reduces the forming energy. The validity of the proposed algorithm is examined through both a numerical simulation and experiment.

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“…As the result, the trend of VBHF trajectories predicted by Sheng et al [5] is in agreement with that predicted by Cao and Boyce.…”

Section: Introductionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 83%

See 1 more Smart Citation

A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing

Kitayama

Hamano

Yamazaki

et al. 2010

Int J Adv Manuf Technol

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“…These disadvantages seriously limit the general applicability of these kinds of algorithms. Literature describes several applications of these algorithms to metal forming (Aydemir et al 2005;Carrino et al 2003a, b;Di Lorenzo et al 2004;Johnson et al 2004;Labergère and Gelin 2004a, b;Ray and Mac Donald 2004;Sheng et al 2004;Sillekens and Werkhoven 2001;Strano and Carrino 2004) especially to optimise the internal pressure and axial feeding load paths in hydroforming.…”

Section: Solvingmentioning

confidence: 99%

“…Ben Ayed et al (2004aAyed et al ( , b, 2005, Breitkopf et al (2005), Cao et al (2001), Debray et al (2004), Jansson (2002), Jansson et al 2005, Kim et al (2001a, Kleinermann (2001), Kleinermann and Ponthot (2003), Lenoir and Boudeau (2003), Liew et al (2004), Naceur et al (2001Naceur et al ( , 2003Naceur et al ( , 2004a, Ponthot and Kleinermann (2005), Schenk and Hillmann (2004), Sheng et al (2004), Shi et al (2004), Lin et al (2002) and Strano and Carrino (2004) apply optimisation techniques to deep drawing; Abedrabbo et al (2004), Aydemir et al (2005), Di Lorenzo et al (2004), Endelt (2003), Endelt and Nielsen (2001), Fann and Hsiao (2003), Jirathearanat and Altan (2004), Johnson et al (2004), Labergère and Gelin (2004a, b), Ray and Mac Donald (2004), Sillekens and Werkhoven (2001), Weyler et al (2004) and Yang et al (2001) to hydroforming; Carrino et al (2003a, b) and Kim et al (2001b) to superplastic forming; Byon and Hwang (2001) and Lin et al (2003) to extrusion; and António et al (2004)...…”

Section: Introductionmentioning

confidence: 99%

An optimisation strategy for industrial metal forming processes

Bonte

Boogaard

Huétink

2008

Struct Multidisc Optim

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Product improvement and cost reduction have always been important goals in the metal forming industry. The rise of finite element (FEM) simulations for processes has contributed to these goals in a major way. More recently, coupling FEM simulations to mathematical optimisation techniques has shown the potential to make a further giant contribution to product improvement and cost reduction. Much research on the optimisation of metal forming processes has been published during the last couple of years. Although the results are impressive, the optimisation techniques are generally only applicable to specific optimisation problems for specific products and specific metal forming processes. As a consequence, applying optimisation techniques to other metal forming problems requires a lot of optimisation expertise, which forms a barrier for more general industrial application of these techniques. In this paper, we overcome this barrier by proposing a generally applicable optimisation strategy that makes use of FEM simulations of metal forming processes. It consists of a structured methodology for modelling optimisation problems related to metal forming. Subsequently, screening is applied to reduce the size of the optimisation problem by selecting only the most important design variables. Finally, the reduced optimisation problem is solved by an efficient optimisation algorithm. The strategy is generally applicable in a sense that it is not constrained to a certain type of metal forming problem, product or process. Also, any FEM code may be included in the strategy. the structured approach for modelling and solving optimisation problems should enable non-optimisation specialists to apply optimisation techniques to improve their products and processes. The optimisation strategy has been successfully applied to a hydroforming process, which demonstrates the potential of the optimisation of metal forming processes in general and more specific the proposed optimisation strategy.

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2016

Material Forming Processes

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Adaptive FEM simulation for prediction of variable blank holder force in conical cup drawing

Cited by 113 publications

References 10 publications

A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing

A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing

An optimisation strategy for industrial metal forming processes

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