Some aspects of blank-holder force schemes in deep drawing process

• Autorzy: Wifi A. , Mosallam A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper presents a finite element-based assessment of the performance of some non-conventional blank-holding techniques. This includes friction actuted, pulsating, and pliable blank-holding techniques. Design/methodology/approach: A 3-D explicit-finite element analysis is used to investigate the influence of various blank-holder force (BHF) schemes on sheet metal formability limits especially wrinkling and tearing rupture. The role of relevant parameters of each blank-holding technique are also investigated. Three non-conventional blank-holders are considered, namely friction-actuated, elastic and pulsating blank-holders. Findings: For the conditions considered in this study, comparison with fixed BHF scheme revealed that slight improvements in the formability are observed for the three BHF schemes under consideration. Research limitations/implications: Only 5182 Al-alloy circular cups are considered. Further investigations should consider different materials and non-circular shapes because of their effect on sheet metal formability. Practical implications: Cylindrical cups' drawing is responsible for the manufacture of billions of metal containers. This study can help improve working conditions leading to defect free products. Originality/value: The 3D-explicit finite simulations presented for a number of non-conventional blank-holding techniques are useful in the assessment of their performance.

Słowa kluczowe

EN

BHF schemes; blankholder force; deep drawing; sheet metal forming; finite element analysis; optimization

PL

siła wywierana przez dociskacz; głębokie tłoczenie; tłoczenie blach; analiza elementów skończonych; optymalizacja

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 24, nr 1
• Strony: 315--323
• Opis fizyczny: Bibliogr. 24 poz., rys.

Twórcy

autor

Wifi A.

autor

Mosallam A.

• Department of Mechanical Design and Production, Faculty of Engineering, Cairo University, Giza 12316, Egypt,

Bibliografia

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