Deep drawing of square cups with magnesium alloy AZ31 sheets

Chen, Fuh‐Kuo; Huang, Tsung-Hui; Chang, Chao

doi:10.1016/s0890-6955(03)00198-6

Cited by 134 publications

(69 citation statements)

References 7 publications

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“…The first attempts to determine the forming limit curves for metal experimentally and theoretically were conducted by Keeler and Backhofen (1964) and Marciniak and Kuczynski (1967). Meanwhile, finite element simulations were widely used in the prediction of the occurrence of rupture during deep-drawing, using models that accounted for the effects of voids in the material (Saxena and Dixit 2011), temperature (Chen et al 2003), or ductile fracture (Lou et al 2012). Unfortunately, fundamental research has not been conducted in the forming of paperboard to a comparable extent.…”

Section: Introductionmentioning

confidence: 99%

The Occurrence of Rupture in Deep-Drawing of Paperboard

Wallmeier¹,

Hauptmann²,

Majschak³

2016

BioResources

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The production of paperboard packaging components in fast-running machines requires reliability of the production process. Boundaries for the process parameters and constraints for the geometry of the tools require investigation to determine dependable configurations. This paper aimed to investigate the relationships between process parameters, tool geometry, and the occurrence of rupture in the deep-drawing process of paperboard. Different types of ruptures in various phases of the process were distinguished and linked to their specific cause. An extensive experimental investigation with multiple variables of influence was conducted. A logistic regression model was used to describe the experimental data and was statistically validated. The blankholder force was found to be the most influential parameter. Interactions between the parameters blankholder force, punch velocity, and punch diameter were recognized. A high punch velocity can reduce the probability of rupture when the punch diameter is adjusted.

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Section: Introductionmentioning

confidence: 99%

The Occurrence of Rupture in Deep-Drawing of Paperboard

Wallmeier¹,

Hauptmann²,

Majschak³

2016

BioResources

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“…Among the wrought magnesium alloys, AZ31 is the most frequently considered sheet material for automotive applications. Considerable increase in the formability of the AZ31 alloy was observed at temperatures ranging from 200 to 350 • C in warm forming of conical cups by [5], circular cups by [6][7][8] and square cups by [9]. With improved formability, vehicle deck lid inner panels formed from AZ31 sheet alloy using hot gas pressure forming process at 450 • C have been reported by Carter et al [10].…”

Section: Introductionmentioning

confidence: 91%

“…Three forming limit curves from [5,9], were generated using Nakajima dome test data on 1.2 mm thick rectangular specimens of AZ31 magnesium alloy sheet under isothermal temperature conditions of 100, 200, and 300 • C and a constant punch speed of 0.1 mm/s [5,9]. The obtained FLCs were fitted from measured data from three orientations to the rolling direction, i.e., 0 • , 45 • , and 90 • .…”

Section: Construction Of Z-fls For Az31 Magnesium Alloymentioning

confidence: 99%

“…Due to variation in tooling speed and heat transfer between the sheet and the tool, warm forming is, in general a non-isothermal process, which creates spatially and temporally different distribution of strain rates and temperatures on the sheet during the forming operation [6][7][8][9]. Thus, the prediction of fracture in warm forming requires a complete representation of forming limits that vary with strain rates and temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Developing a Zener–Hollomon Based Forming Limit Surface for Warm Sheet Forming of Magnesium Alloy

Sheng¹,

Mallick

2018

JMMP

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Abstract:The concept of Zener-Hollomon (Z) based Forming Limit Surface (Z-FLS)-which has minor strain, major strain, and ln(Z) as its three axes-was initially proposed in a previous study. In the Z-FLS diagram, strain rate and temperature effects on the major limit strain are reflected by ln(Z). In the current study, the concept of Z-FLS is revisited to provide a practical approach to construct Z-FLS. A Z-FLS then is constructed for magnesium alloy AZ31B sheet material using available experimental forming limit curves. The constructed Z-FLS is used to identify fracture in a non-isothermal warm cup forming process, which was modeled as a coupled thermo-mechanical process. Based on the Z-FLS, the determined limiting draw ratio (LDR) matches well with the published experimental results.

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“…The stamping process involves converting the flat sheet portion into a non-expandable surface element. In the stamping process, axially-symmetric [2], rectangular [3] and complex shaped drawpieces are produced.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements

2017

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Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements Analiza porównawcza badań doświadczalnych i numerycznych tłoczenia elementów osiowo-symetrycznych Abstract The paper presents experimental and numerical results of the stamping process of an axially-symmetrical element. The subject of the study was a sample made of a 0.47 mm thick aluminium alloy Al-1100 sheet. Experimental studies were conducted on a universal testing machine, while numerical simulations were carried out on two different numerical software programs Abaqus ® and Deform-3D. The results obtained from the numerical analysis allowed to develop a numerical model of the stamping process.Keywords: stamping process, numerical and experimental analysis, Abaqus, Deform-3D Streszczenie W artykule przedstawiono wyniki badań eksperymentalnych i numerycznych procesu tłoczenia elementu osiowo-symetrycznego. Przedmiotem badań była próbka wykonana ze stopu aluminium Al-1100 o grubości 0,47 mm. Badania doświadczalne przeprowadzono na uniwersalnej maszynie wytrzymałościowej, natomiast symulacje numeryczne zrealizowano w dwóch różnych programach komputerowych Abaqus® oraz Deform-3D. Wyniki uzyskane z analizy numerycznej pozwoliły na opracowanie numerycznego modelu procesu tłoczenia.Słowa kluczowe: proces tłoczenia, analizy numeryczne i doświadczalne, Abaqus, Deform-3D

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Deep drawing of square cups with magnesium alloy AZ31 sheets

Cited by 134 publications

References 7 publications

The Occurrence of Rupture in Deep-Drawing of Paperboard

The Occurrence of Rupture in Deep-Drawing of Paperboard

Developing a Zener–Hollomon Based Forming Limit Surface for Warm Sheet Forming of Magnesium Alloy

Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements

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