DETERMINATION OF PRESSURE PATH AND PUNCH VELOCITY IN HYDROFORMING OF CUP-SHAPED PRODUCTS USING ADAPTIVE SIMULATION-BASED OPTIMIZATION

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HASHEMI ABBAS; HOSEINPOUR GOLLO MOHAMMAD; SEYEDKASHI SEYED MOHAMMAD HOSSEIN

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:5 Page(s): 160-168

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Title

DETERMINATION OF PRESSURE PATH AND PUNCH VELOCITY IN HYDROFORMING OF CUP-SHAPED PRODUCTS USING ADAPTIVE SIMULATION-BASED OPTIMIZATION

Author(s)

HASHEMI ABBAS | HOSEINPOUR GOLLO MOHAMMAD | SEYEDKASHI SEYED MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

ADAPTIVE SIMULATED ANNEALINGQ1

FLEXIBLE SIMULATIONQ1

SHEET HYDROFORMING PROCESSQ1

PRESSURE PATHQ1

PUNCH VELOCITYQ1

Abstract

In this paper, a practical method of combined finite element simulation and ADAPTIVE SIMULATED ANNEALING optimization was developed to design and analyze SHEET HYDROFORMING PROCESS. Process simulation using finite element code with parametric definition of process parameters creates flexibility on the proposed method in which geometrical dimensions and properties of the workpiece and the die comprise a part of input data of optimization program. This makes it possible to investigate any cupshaped products through the proposed method. Redefining of simulated annealing parameters with respect to hydroforming process enabled data convergence to be achieved in a shorter time and with higher precision. An intermediate MATLAB code was developed and used to manage data transfer automatically between optimization and simulation codes, in which there would be no need for any interaction of user/designer during the optimization process execution. The research aim of presenting the combinatorial procedure of flexible process simulation together with ADAPTIVE SIMULATED ANNEALING technique is to achieve optimal forming pressure loading path, to determine desired PUNCH VELOCITY, to produce desired work piece with minimum thinning and to avoid wrinkling and rupturing defects. In this research, two different loading paths proportionate to the ram’s stroke of press unit (constant/variable velocity) are proposed to synchronize optimal PRESSURE PATH and desired PUNCH VELOCITY in forming cup shaped products. Using the optimization approaches of constant and variable velocity, thinning values of 12.9778 and 12.3295 for a steel part with conical shape were obtained respectively by implementing simulation iteration of 202 and 148, which demonstrates improved product quality and decrease of simulation iteration in variable velocity. Appropriate conformity between numerical data and experimental results verified reliability and accuracy of the proposed optimization procedure.

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APA: Copy

HASHEMI, ABBAS, HOSEINPOUR GOLLO, MOHAMMAD, & SEYEDKASHI, SEYED MOHAMMAD HOSSEIN. (2016). DETERMINATION OF PRESSURE PATH AND PUNCH VELOCITY IN HYDROFORMING OF CUP-SHAPED PRODUCTS USING ADAPTIVE SIMULATION-BASED OPTIMIZATION. MODARES MECHANICAL ENGINEERING, 16(5), 160-168. SID. https://sid.ir/paper/177921/en

Vancouver: Copy

HASHEMI ABBAS, HOSEINPOUR GOLLO MOHAMMAD, SEYEDKASHI SEYED MOHAMMAD HOSSEIN. DETERMINATION OF PRESSURE PATH AND PUNCH VELOCITY IN HYDROFORMING OF CUP-SHAPED PRODUCTS USING ADAPTIVE SIMULATION-BASED OPTIMIZATION. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(5):160-168. Available from: https://sid.ir/paper/177921/en

IEEE: Copy

ABBAS HASHEMI, MOHAMMAD HOSEINPOUR GOLLO, and SEYED MOHAMMAD HOSSEIN SEYEDKASHI, “DETERMINATION OF PRESSURE PATH AND PUNCH VELOCITY IN HYDROFORMING OF CUP-SHAPED PRODUCTS USING ADAPTIVE SIMULATION-BASED OPTIMIZATION,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 5, pp. 160–168, 2016, [Online]. Available: https://sid.ir/paper/177921/en

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