Numerical modeling of axi-symmetrical cold forging process by “Pseudo Inverse Approach”

Halouani, Ali; Li, Y. M.; Abbès, Boussad; Guo, Ying

doi:10.1063/1.3589542

Cited by 2 publications

(5 citation statements)

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“…The calculation of the trajectories of all material points from the initial billet to the known final part is done in one step by directly comparing the initial and final configurations [4]. An implicit Newton-Raphson algorithm is used to move the nodes in the initial billet in order to satisfy equilibrium in the final part.…”

Section: Outlines Of the Piamentioning

confidence: 99%

“…The PIA (or multi-step inverse approach) based on the IA is developed to improve the stress estimation. The main developments in the PIA can be summarized as follows [4]:…”

Section: Outlines Of the Piamentioning

confidence: 99%

“…In this context, it will be very useful to develop a fast and robust forging solver for the preform design and optimization. A new simplified approach called Pseudo Inverse Approach (PIA) has been proposed for the axisymmetric cold forging modelling [4]. This approach exploits at maximum the knowledge of the final part shape.…”

Section: Introductionmentioning

confidence: 99%

“…A new algorithm of plasticity integration called Direct Scalar Algorithm (DSA) has been proposed in the PIA [4], which is very efficient especially for very large loading increments compared to the classical Return Mapping Algorithm (RMA).…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Forging Preforms by Using Pseudo Inverse Approach

Halouani

Abbès

et al. 2012

KEM

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A simplified method called “Pseudo Inverse Approach” (PIA) has been developed for axi-symmetrical cold forging modelling. The approach is based on the knowledge of the final part shape. Some intermediate configurations are introduced and corrected by using a free surface method to consider the deformation paths without classical contact treatment. A new direct algorithm of plasticity is developed using the notion of equivalent stress and the tensile curve, which leads to a very fast and robust plastic integration procedure. Numerical tests have shown that the Pseudo Inverse Approach is very fast compared to the incremental approach. In this paper, the PIA will be used in an optimization loop for the preliminary preform design in multi-stage forging processes. The optimization problem is to minimize the effective strain variation in the final part and the maximum forging force during the forging process. The numerical results of the optimization method using the PIA are compared to those using the classical incremental approaches to show the efficiency and limitations of the PIA.

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Section: Outlines Of the Piamentioning

confidence: 99%

“…The PIA (or multi-step inverse approach) based on the IA is developed to improve the stress estimation. The main developments in the PIA can be summarized as follows [4]:…”

Section: Outlines Of the Piamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Forging Preforms by Using Pseudo Inverse Approach

Halouani

Abbès

et al. 2012

KEM

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show abstract

“…An inverse approach (IA) has been proposed for the axi-symmetric cold forging modeling [3]. This approach exploits at maximum the knowledge of the final part shape.…”

Section: Introductionmentioning

confidence: 99%

A simplified pseudo inverse approach for damage modeling in the cold forging process

Halouani

Abbès

et al. 2013

AIP Conference Proceedings

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Articles you may be interested inForging tool shape optimization using pseudo inverse approach and adaptive incremental approach AIP Conf. Proc. 1532, 95 (2013); 10.1063/1.4806812Numerical modeling of axi-symmetrical cold forging process by "Pseudo Inverse Approach" AIP Conf.Abstract. This paper presents a simplified numerical method called "Pseudo Inverse Approach" (PIA) for damage prediction in metal forging process modeling and optimization. The approach is based on the knowledge of the final part shape. Some intermediate configurations are introduced and corrected by using a free surface method to consider the deformation paths. Based on the equivalent stress notion and tensile curve, a robust direct algorithm of plasticity is formulated and implemented. The plasticity is coupled with the ductile damage by using a strain based ductile damage model. The forging results obtained by the PIA are compared to those obtained by an incremental approach to show the efficiency and accuracy of the PIA, as well as the abilities to make the damage prediction.

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Numerical modeling of axi-symmetrical cold forging process by “Pseudo Inverse Approach”

Cited by 2 publications

References 3 publications

Optimization of Forging Preforms by Using Pseudo Inverse Approach

Optimization of Forging Preforms by Using Pseudo Inverse Approach

A simplified pseudo inverse approach for damage modeling in the cold forging process

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