Modelling of ductile failure in metal forming

H.H. Wisselink; J. Huetink

Modelling of ductile failure in metal forming

H.H. Wisselink, J. Huetink

Faculty of Engineering Technology

Research output: Contribution to conference › Paper › peer-review

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Abstract

Damage and fracture are important criteria in the design of products and processes. Damage models can be used to predict ductile failure in metal forming processes. Nonlocal models avoid the mesh dependency problems of local damage models. A nonlocal damage model has been implemented in LSDYNA using the user-subroutines UMAT and UCTRL1. The implemented model will be compared with results obtained with the available option in LS-DYNA to combine *MAT PLASTICITY WITH DAMAGE with *MAT NONLOCAL. Advantages and disadvantages of the different implementations will be discussed. The user nonlocal damage model has been applied to a bending and a blanking process. Results of these simulations will be shown.

Original language	English
Pages	1-10
Publication status	Published - 14 May 2009
Event	7th European LS-DYNA Conference 2009 - Salzburg, Austria Duration: 14 May 2009 → 15 May 2009 Conference number: 7

Conference

Conference	7th European LS-DYNA Conference 2009
Country/Territory	Austria
City	Salzburg
Period	14/05/09 → 15/05/09

Keywords

METIS-261286
Onderzoek van algemene industriele aardMechanical engineering and technology
IR-69233

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abstract = "Damage and fracture are important criteria in the design of products and processes. Damage models can be used to predict ductile failure in metal forming processes. Nonlocal models avoid the mesh dependency problems of local damage models. A nonlocal damage model has been implemented in LSDYNA using the user-subroutines UMAT and UCTRL1. The implemented model will be compared with results obtained with the available option in LS-DYNA to combine *MAT PLASTICITY WITH DAMAGE with *MAT NONLOCAL. Advantages and disadvantages of the different implementations will be discussed. The user nonlocal damage model has been applied to a bending and a blanking process. Results of these simulations will be shown.",

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AU - Wisselink, H.H.

AU - Huetink, J.

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N2 - Damage and fracture are important criteria in the design of products and processes. Damage models can be used to predict ductile failure in metal forming processes. Nonlocal models avoid the mesh dependency problems of local damage models. A nonlocal damage model has been implemented in LSDYNA using the user-subroutines UMAT and UCTRL1. The implemented model will be compared with results obtained with the available option in LS-DYNA to combine *MAT PLASTICITY WITH DAMAGE with *MAT NONLOCAL. Advantages and disadvantages of the different implementations will be discussed. The user nonlocal damage model has been applied to a bending and a blanking process. Results of these simulations will be shown.

AB - Damage and fracture are important criteria in the design of products and processes. Damage models can be used to predict ductile failure in metal forming processes. Nonlocal models avoid the mesh dependency problems of local damage models. A nonlocal damage model has been implemented in LSDYNA using the user-subroutines UMAT and UCTRL1. The implemented model will be compared with results obtained with the available option in LS-DYNA to combine *MAT PLASTICITY WITH DAMAGE with *MAT NONLOCAL. Advantages and disadvantages of the different implementations will be discussed. The user nonlocal damage model has been applied to a bending and a blanking process. Results of these simulations will be shown.

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T2 - 7th European LS-DYNA Conference 2009

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ER -

Modelling of ductile failure in metal forming

Abstract

Conference

Keywords

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