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Browsing by Author "Firat, M;"

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A finite element modeling and prediction of stamping formability of a dual-phase steel in cup drawing

Fırat, Mehmet (ELSEVIER SCI LTD, 2012)

A numerical technique is presented in order to assess formability conditions for tearing type sheet metal failures in automotive stamping applications. The proposed technique is based on the plastic instability and uses ...
A numerical analysis of combined bending-torsion fatigue of SAE notched shaft

Fırat, Mehmet (ELSEVIER SCIENCE BV, 2012)

A notch analysis method using a finite element basis is integrated with two critical plane multiaxial fatigue criteria to simulate combined bending-torsion fatigue of SAE 1045 notched specimen. For both in-phase and ...
A numerical analysis of sheet metal formability for automotive stamping applications

Fırat, Mehmet (ELSEVIER SCIENCE BV, 2008)

A theoretical failure model is presented for the numerical prediction of the forming limit strains of automotive sheets. The model uses the Swift's diffuse necking and Hill's localized necking concepts in describing ...
An analysis of sheet drawing characteristics with drawbead elements

Fırat, Mehmet (ELSEVIER SCIENCE BV, 2008)

An analytical model for the sectional deformation analysis of automotive sheets passing through a drawbead element is presented. The steady-state deformation of the sheet metal is prescribed by the geometry of the drawbead ...
Computer aided analysis and design of sheet metal forming processes: Part I - The finite element modeling concepts

Fırat, Mehmet (ELSEVIER SCI LTD, 2007)

The design of a stamping die essentially begins with the geometric development of die-faces using the process specifications in the form of part geometry, material data and stamping criterion such as the thinning limits. ...
Computer aided analysis and design of sheet metal forming processes: Part II - Deformation response modeling

Fırat, Mehmet (ELSEVIER SCI LTD, 2007)

The continually decreasing lead-times for the design approval and the production of stamping dies enforce the stamping methods engineer to apply the finite element method more effectively in the industrial settings. The ...
Computer aided analysis and design of sheet metal forming processes: Part III: Stamping die-face design

Fırat, Mehmet (ELSEVIER SCI LTD, 2007)

The finite element simulations of a sheet metal forming process help the methods and tooling engineer designing the forming interface for a stamping part by shifting the costly press shop try-outs to the computer aided ...
Cyclic plasticity modeling and finite element analyzes of a circumferentially notched round bar under combined axial and torsion loadings

Fırat, Mehmet (ELSEVIER SCI LTD, 2012)

A cyclic plasticity model suitable for fatigue damage modeling of metallic structures is presented and its finite element (FE) implementation is described within the small strain plasticity framework. The model uses the ...
U-channel forming analysis with an emphasis on springback deformation

Fırat, Mehmet (ELSEVIER SCI LTD, 2007)

Today apart from CAD/CAM activities, engineering simulation tools based on the finite element method are employed regularly in the design of stamping dies for sheet metal parts in automotive industries. With the increased ...