EXPERIMENTAL AND NUMERICAL STUDY ON STRESS PEEN FORMING OF ALUMINUM ALLOY METAL SHEETS

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DABIRI NASSER; GHADERI SEYED HADI; GERDOOEI MAHDI

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:11 Page(s): 169-180

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Information Journal Paper

Title

EXPERIMENTAL AND NUMERICAL STUDY ON STRESS PEEN FORMING OF ALUMINUM ALLOY METAL SHEETS

Author(s)

DABIRI NASSER | GHADERI SEYED HADI | GERDOOEI MAHDI | Issue Writer Certificate

Keywords

SHEET METAL FORMINGQ2

RESIDUAL STRESSQ2

SHOT PEENINGQ2

PEEN FORMINGQ2

STRESS PEEN FORMINGQ2

Abstract

As an effective forming method in aeronautical industries, PEEN FORMING is derived from SHOT PEENING process. Major application of this process is for producing large thin components with gentle curvature such as aircraft panels and wing skins. This process can be divided into two categories; PEEN FORMING without elastic pre-strain (conventional PEEN FORMING) and with elastic pre-strain (stress PEEN FORMING). In this research, numerical and experimental study of SHOT PEENING, PEEN FORMING and stress PEEN FORMING of aluminum alloy sheets were conducted. In order to perform experimental tests, steel shots with 0.4 and 0.6 mm diameter and aluminum alloys Al6061-T6 strips were used. For applying elastic pre-strain, fixtures with four pre-bending radii ¥, 500 mm, 375 mm and 250 mm were designed and manufactured. In numerical section, using the same parameters as applied in experiments, first by using a 3D model with random distribution of shots, SHOT PEENING process was simulated and induced and RESIDUAL STRESSes in sheet, were obtained. Next, using this model and in a three-step procedure, PEEN FORMING and stress PEEN FORMING processes were simulated. The results showed that applying pre-strain has a considerable effecte on distribution of stress inside the sheet metal and thus on the final deformation of it. Along with increasing pre-bending moment (decreasing pre-bending radius), the resulting curvature in the sheet in the direction of the applied pre-bending, increases. According to the experimental and numerical results, in comparison with conventional PEEN FORMING, stress PEEN FORMING using 250 mm prebending radius increases the curvatures over 100%.

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APA: Copy

DABIRI, NASSER, GHADERI, SEYED HADI, & GERDOOEI, MAHDI. (2016). EXPERIMENTAL AND NUMERICAL STUDY ON STRESS PEEN FORMING OF ALUMINUM ALLOY METAL SHEETS. MODARES MECHANICAL ENGINEERING, 15(11), 169-180. SID. https://sid.ir/paper/177772/en

Vancouver: Copy

DABIRI NASSER, GHADERI SEYED HADI, GERDOOEI MAHDI. EXPERIMENTAL AND NUMERICAL STUDY ON STRESS PEEN FORMING OF ALUMINUM ALLOY METAL SHEETS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(11):169-180. Available from: https://sid.ir/paper/177772/en

IEEE: Copy

NASSER DABIRI, SEYED HADI GHADERI, and MAHDI GERDOOEI, “EXPERIMENTAL AND NUMERICAL STUDY ON STRESS PEEN FORMING OF ALUMINUM ALLOY METAL SHEETS,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 11, pp. 169–180, 2016, [Online]. Available: https://sid.ir/paper/177772/en

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