The Effects of Friction Coefficient on Formability Behaviour of Dual Phase Steel

Tekaüt, İsmail

doi:10.1590/1980-5373-mr-2018-0759

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…15 The influences of friction on the formability of steel sheets were examined by Tekaut. 16,17 According to the aforementioned studies, different areas in deep-drawing should be under different friction conditions or having a variable coefficient of friction (VCOF) to obtain the highest formability results. Nevertheless, one of the main challenges in deepdrawing is to integrate VCOF in the process because the effect of variable friction conditions depends on many factors such as materials, geometries, and loading conditions.…”

Section: Introductionmentioning

confidence: 99%

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Sheet thinning prediction method based on localized friction effect in deep-drawing

Preedawiphat

Koowattanasuchat

Mahayotsanun

et al. 2014

Advances in Mechanical Engineering

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The paper investigated the effect of localized friction on sheet thinning under lubricated conditions in the deep-drawing process. The Finite Element Analysis (FEA) was used to evaluate the sheet thinning of the AISI 304 sheet under six segmented blank-sheet interfaces. Different values of variable coefficient of friction (VCOF) in each segmented area were investigated, and the sheet thickness values at the considered areas were measured. The regression analysis models (Linear Regression, Response Surface Method, and Polynomial Regression) was used to determine the relationships between VCOF and sheet thinning. The results showed that the Linear Regression showed the best fit. The significant factor analysis was also carried out to determine how the localized friction affected the sheet thinning. The contributions of VCOF from at least two segmented areas affected the sheet thinning at any particular location. The obtained relationships of the VCOF and sheet thinning could be beneficial for the localized friction control for highly complex shapes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sheet thinning prediction method based on localized friction effect in deep-drawing

Preedawiphat

Koowattanasuchat

Mahayotsanun

et al. 2014

Advances in Mechanical Engineering

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Numerical Analysis of the Effect of Coefficient of Friction on the Formability Behaviour of Aluminium AA1060 in the Stretch-Forming Process

Habeeb,

Abed,

Singal

2024

Salud, Ciencia y Tecnología - Serie de Conferencias

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In sheet metal forming processes, the success of the forming process depends on several primary parameters such as the geometry of the tool, Sheet Material Properties, and the Friction in the contact area (tool/workpiece interface). In addition, the process parameters like punch crosshead, deformation temperature, surface roughness of both punch head and sheet blank, lubricant state, and the value of the applied load. Friction in the actual contact area plays a significant effect in obtaining a high-quality part and reducing the production cost. The study provides a new idea to specify the suitable Coefficient of Friction (COF) used when forming Aluminium AA1060, taken according to Coulomb’s Friction Law and Stribeck Diagram for different lubricant states. The methodology of this research is based on the finite element analysis using ABAQUS/CAE 2020 of the Nakajima Formability Test for different Coefficients of Friction (COF) that are taken from Stribeck’s Diagram according to sheet material type, where the suitable Coefficient of Friction (COF) that achieves ISO 12004-2 condition to consider the sheet material successful in the test and valid for use in the manufacturing process. Results show that the Coefficient of Friction (COF) significantly affects the Formability behaviour and specifies the Location of Tearing (crack), where at higher (COF), the Formability of Aluminium AA1060 is decreased. The Tearing (crack) occurs near the circumference of the sample. Consequently, the sample was considered failed in the test and invalid to use in manufacturing processes. At the same time, when (COF) is low, the Formability of the sheet material increases, and tearing occur near the centre of the sample apex, so the sample is considered successful in the test and valid to use in the manufacturing process according to ISO 12004-2.

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The Effects of Friction Coefficient on Formability Behaviour of Dual Phase Steel

Cited by 2 publications

References 10 publications

Sheet thinning prediction method based on localized friction effect in deep-drawing

Sheet thinning prediction method based on localized friction effect in deep-drawing

Numerical Analysis of the Effect of Coefficient of Friction on the Formability Behaviour of Aluminium AA1060 in the Stretch-Forming Process

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