DYNAMIC ANALYSIS INSTABILITY OF SHEET METAL UNDER BIAXIAL STRETCHING

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GERDOUEI M.; MOLAEI DARIYANI B.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: AMIRKABIR Year:2008 | Volume:18 | Issue:67-B Page(s): 31-39

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Title

DYNAMIC ANALYSIS INSTABILITY OF SHEET METAL UNDER BIAXIAL STRETCHING

Author(s)

GERDOUEI M. | MOLAEI DARIYANI B. | Issue Writer Certificate

Keywords

FORMABILITYQ2

INSTABILITYQ2

FORMING SPEEDQ2

STRAIN RATEQ1

FLDQ2

Abstract

In the metal forming processes, the process variables (such as FORMING SPEED) have significant effects on the forming parameters. In this study, using the motion equations (instead of the equilibrium equations) in the biaxial stretching analysis of the sheet, the evolution of initial in homogeneity has been simulated. Adopting work hardening and STRAIN RATE hardening characteristic for material, the effects of FORMING SPEED on the shape and position of the forming limit diagram (FLD) are investigated theoretically over a wide range of STRAIN RATE. Furthermore, the combined effects of the STRAIN RATE and material intrinsic parameters (density, strain hardening component and STRAIN RATE sensitivity index) on the critical strain are obtained in the case of plane strain loading. The analysis indicates that after a certain forming rate, by increasing the STRAIN RATE, localized necking is retarded and FORMABILITY of sheet improves monotonically because of inertia effects.

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APA: Copy

GERDOUEI, M., & MOLAEI DARIYANI, B.. (2008). DYNAMIC ANALYSIS INSTABILITY OF SHEET METAL UNDER BIAXIAL STRETCHING. AMIRKABIR, 18(67-B), 31-39. SID. https://sid.ir/paper/743/en

Vancouver: Copy

GERDOUEI M., MOLAEI DARIYANI B.. DYNAMIC ANALYSIS INSTABILITY OF SHEET METAL UNDER BIAXIAL STRETCHING. AMIRKABIR[Internet]. 2008;18(67-B):31-39. Available from: https://sid.ir/paper/743/en

IEEE: Copy

M. GERDOUEI, and B. MOLAEI DARIYANI, “DYNAMIC ANALYSIS INSTABILITY OF SHEET METAL UNDER BIAXIAL STRETCHING,” AMIRKABIR, vol. 18, no. 67-B, pp. 31–39, 2008, [Online]. Available: https://sid.ir/paper/743/en

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