EFFECTS OF UNBALANCED FORCES ON PRODUCT THICKNESS ACCURACY IN MULTI-ROLLERS FLOW-FORMING

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JAFARI NEDOUSHAN R.; FARZIN M.

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

Journal Paper

Paper Information

Journal: Journal of Aerospace Mechanics Year:2011 | Volume:7 | Issue:2 (24) Page(s): 33-44

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Title

EFFECTS OF UNBALANCED FORCES ON PRODUCT THICKNESS ACCURACY IN MULTI-ROLLERS FLOW-FORMING

Author(s)

JAFARI NEDOUSHAN R. | FARZIN M. | Issue Writer Certificate

Keywords

FLOW-FORMINGQ2

PRODUCT ACCURACYQ2

UNBALANCE FORCEQ2

MANDREL STIFFNESSQ2

Abstract

An advantage of the FLOW-FORMING process is high accuracy of products. Most researches have studied product diametric accuracy, but they have rarely investigated thickness accuracy. In this paper, a procedure is proposed to predict the effects of unbalanced forces on the product thickness accuracy. For this purpose, affecting parameters on roller forces were distinguished and roller forces were assumed as functions of these parameters. Noting that during the process, affecting parameters only change with mandrel deflection, these parameters (and consequently rollers forces) were calculated as functions of mandrel deflections. Functions' coefficients were calculated using finite element method. Considering the force equilibrium of rollers and mandrel and using the above-mentioned functions, the mandrel deflection was calculated. Consequently, product thickness error due to mandrel deflection was calculated. Experiments were also performed to validate the proposed theory. Theoretical and experimental thickness variations follow similar trends. Finally, it was demonstrated that unbalanced forces cause non-uniform thickness along the product's length.

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APA: Copy

JAFARI NEDOUSHAN, R., & FARZIN, M.. (2011). EFFECTS OF UNBALANCED FORCES ON PRODUCT THICKNESS ACCURACY IN MULTI-ROLLERS FLOW-FORMING. AEROSPACE MECHANICS JOURNAL, 7(2 (24)), 33-44. SID. https://sid.ir/paper/392322/en

Vancouver: Copy

JAFARI NEDOUSHAN R., FARZIN M.. EFFECTS OF UNBALANCED FORCES ON PRODUCT THICKNESS ACCURACY IN MULTI-ROLLERS FLOW-FORMING. AEROSPACE MECHANICS JOURNAL[Internet]. 2011;7(2 (24)):33-44. Available from: https://sid.ir/paper/392322/en

IEEE: Copy

R. JAFARI NEDOUSHAN, and M. FARZIN, “EFFECTS OF UNBALANCED FORCES ON PRODUCT THICKNESS ACCURACY IN MULTI-ROLLERS FLOW-FORMING,” AEROSPACE MECHANICS JOURNAL, vol. 7, no. 2 (24), pp. 33–44, 2011, [Online]. Available: https://sid.ir/paper/392322/en

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