Process analysis of hydrodynamic deep drawing of cone cups assisted by radial pressure

Jalil, Alireza; Gollo, M. Hoseinpour; Seyedkashi, S. M. H.

doi:10.1177/0954405415612325

Cited by 14 publications

(11 citation statements)

References 16 publications

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“…In this problem, it is selected as 0.95. Lower and upper pressure bounds [27,28] which are dependent on sheet material properties and geometrical characteristics of the workpiece can be obtained via equations (6) and (7), respectively,…”

Section: Simulated Annealing (Sa)mentioning

confidence: 99%

Application of a new integrated optimization approach in sheet hydroforming process

Hashemi

Gollo

Seyedkashi

2018

Mechanics & Industry

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The purpose of this study is to produce a desired hydroformed product under the optimal pressure profile. To achieve this purpose, a new adaptive optimization approach is proposed based on fuzzy logic control (FLC) integrated with simulated annealing (SA) optimization technique and ANSYS parametric design language (APDL). An intermediate MATLAB code was developed and used to manage data transfer automatically between FLC, SA and APDL, in which there would be no need for any interaction of user/designer during the optimization process execution. This method aims to find the optimal pressure loading profile, prevent wrinkling and necking failures, reduce unsuccessful iterations, and enhance convergence precision. This method is capable of adaptively changing the process parameters in order to reach the optimized values with higher accuracy in a more reasonable time. The results show a good agreement between the proposed optimization approach and experiments. The developed optimization approach is a practical and reliable design tool for industrial production of any symmetric shell cups using hydroforming process.

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Section: Simulated Annealing (Sa)mentioning

confidence: 99%

Application of a new integrated optimization approach in sheet hydroforming process

Hashemi

Gollo

Seyedkashi

2018

Mechanics & Industry

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“…Maximum critical pressure (Pmax) is obtained by the following equation 24,25 in which for conical cups ρ cr = ρ cos α and for cylindrical cups ρcr=ρ. where ρ is the curvature radius of the flange-cup transition zone, α the half apex angle of cone, r and b the current flange radii, ɛr1 and ɛr2 the radial strain components in different regions, R p the punch radius, and μ the effective coulomb friction coefficient.…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Maximum critical pressure (P max ) is obtained by the following equation 24,25 in which for conical cups cr ¼cos and for cylindrical cups cr ¼ .…”

Section: Parametric Design Techniquementioning

confidence: 99%

Adaptive hybrid optimization of hydrodynamic deep drawing with radial pressure process by combination of parametric design and simulated annealing techniques

Hashemi

Gollo

Seyedkashi

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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An adaptive hybrid simulated annealing technique with ANSYS parametric design language is developed to optimize hydrodynamic deep drawing assisted by radial pressure process. This work aims to determine an optimal pressure path by redefinition of simulated annealing parameters and creating an adaptive finite element code using ANSYS parametric design language for any cylindrical, conical, and conical-cylindrical cups. The simulated annealing algorithm is developed adaptively with respect to hydrodynamic deep drawing with radial pressure process to link with ANSYS parametric design language code using a script in MATLAB. Parametric definition of process parameters enables the optimization algorithm to change the finite element model configuration in each iteration. Defective product is detected by definition of two failure criteria based on thinning and wrinkling occurrence during the optimization process. The proposed optimization method is employed in fractional factorial design of experiment to investigate the effective parameters on final product quality. Also, a regression model is derived to predict the final product quality based on the maximum thinning percentage under the optimal pressure path. Reliability of the optimization procedure and regression model is validated by experiments.

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“…10 Many works have been done on different types of sheet hydroforming. [11][12][13] Yossifon and Tirosh 14 investigated fluid pressure to prevent wrinkling in the flange area for deep drawing process by fluid pressure as blank holder force (BHF). Results show that for wrinkling investigation in the flange area, maximum pressure is required at different heights to prevent rupture.…”

Section: Introductionmentioning

confidence: 99%

Theoretical, numerical and experimental investigation of hydro-mechanical deep drawing of steel/polymer/steel sandwich sheets

Fazlollahi

Morovvati

Dariani

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

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Fabricating flat sandwich sheets into components with a required shape and dimensions is a challenging job in the metal forming field. In this article, hydro-mechanical deep drawing was used for sandwich sheet forming. The aim of the work is to achieve higher drawing ratio of these sheets. Theoretical, numerical and experimental analysis of the hydro-mechanical deep drawing of sandwich sheets was carried out. Separated layers theory method is used for theoretical analysis of the process. Then, the numerical simulation of the process was developed by finite element method. The effect of core layer thickness on the forming force of the sandwich sheet and effective parameters of the process such as strain and forming force was investigated. Experimental works were conducted on the steel/polymer/steel sandwich sheets by a hydro-mechanical deep drawing die. A good agreement was observed between theoretical, numerical and experimental results. The safe zone of fluid pressure for achieving a part without rupture was obtained. It was shown that the limit drawing ratio is increased by increasing the pressure but after a particular point, the limit drawing ratio is decreased by increasing the chamber pressure. It was also observed that maximum drawing ratio for achieving a part without rupture in the hydro-mechanical deep drawing process is higher than conventional deep drawing process.

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Process analysis of hydrodynamic deep drawing of cone cups assisted by radial pressure

Cited by 14 publications

References 16 publications

Application of a new integrated optimization approach in sheet hydroforming process

Application of a new integrated optimization approach in sheet hydroforming process

Adaptive hybrid optimization of hydrodynamic deep drawing with radial pressure process by combination of parametric design and simulated annealing techniques

Theoretical, numerical and experimental investigation of hydro-mechanical deep drawing of steel/polymer/steel sandwich sheets

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