PREDICT Research

Failure Prediction of Complex Load Cases in Sheet Metal Forming — Vinnova-funded research on forming limit prediction.

Theses & Dissertations

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Failure Prediction of Complex Load Cases in Sheet Metal Forming
A. Barlo
BTH Licentiate Dissertation Series No. 2023:03 (2023)

Licentiate dissertation covering non-linear strain paths, stretch-bending and edge effects in DP-steels and aluminium alloys.

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Fracture prediction of stretched shear cut edges in sheets made of Dual-Phase steel
J. Falk
BTH Master’s Thesis (2017)

Master's thesis on fracture prediction of stretched shear cut edges in dual-phase steel sheets.

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Journal Publications

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Improvement of modified maximum force criterion for forming limit diagram prediction of sheet metal
Q.T. Pham, M.S. Islam, M. Sigvant, L. Pérez Caro, M.-G. Lee, Y.-S. Kim
International Journal of Solids and Structures 273, 112264 (2023)

New MMFC2 criterion for FLC prediction. Validated on CR4 mild steel with Nakajima tests. Published in IJSS.

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Modeling the strain localization of shell elements subjected to combined stretch–bend loads: Application on automotive sheet metal stamping simulations
Q.T. Pham, M.S. Islam, A. Barlo, M. Sigvant, L. Pérez Caro, K. Trana
Thin-Walled Structures, 110804 (2023)

Necking limit curve for combined stretch-bend loads. Calibrated for DP800 and AA6016, validated via AutoForm stamping simulations.

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Conference Papers

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Failure Prediction of Automotive Components utilizing a Path Independent Forming Limit Criterion
A. Barlo, M. Sigvant, N. Manopulo, M.S. Islam, J. Pilthammar
ESAFORM 2022 — Material Forming (2022)

Path-independent failure criterion based on limit curve transformation. Tested on industrial Volvo Cars component with non-linear strain paths.

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A Study of the Boundary Conditions in the ISO-16630 Hole Expansion Test
A. Barlo, M. Sigvant, L. Pérez, M.S. Islam, J. Pilthammar
IDDRG 2022 — IOP Conf. Ser.: Mater. Sci. Eng. (2022)

Investigates boundary conditions and draw beads in ISO-16630 Hole Expansion Test using 62 DP800 steel tests with 3D-DIC.

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Prediction of forming limit diagram of automotive sheet metals using a new necking criterion (MMFC2)
Q.T. Pham, M.S. Islam, M. Sigvant, L. Pérez Caro
ESAFORM 2023 — Material Forming (2023)

MMFC2 theoretical model for predicting forming limit curves of DP800 and AA6016 with faster computation than MK method.

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An evaluation method for experimental necking detection of automotive sheet metals
Q.T. Pham, M.S. Islam, A. Barlo, M. Sigvant
IDDRG 2023 — IOP Conf. Ser.: Mater. Sci. Eng. 1284, 012020 (2023)

CoV-based method for detecting necking strain localization in AA6016 and DP800 using Digital Image Correlation.

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Determination of Edge Fracture Limit Strain for AHSS in the ISO-16630 Hole Expansion Test
A. Barlo, M. Sigvant, V. Kesti, M.S. Islam, Q.T. Pham, J. Pilthammar
IDDRG 2023 — IOP Conf. Ser.: Mater. Sci. Eng. 1284, 012027 (2023)

Edge formability of DP800 AHSS using modified Hole Expansion Test with 3D-DIC and inverse FE modeling.

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Proposal of a New Tool for Pre-Straining Operations of Sheet Metals
A. Barlo, M. Sigvant, M.S. Islam, L. Pérez, E. Olofsson, M. Al-Fadhli, Q.T. Pham, J. Pilthammar, E.-L. Odenberger
IDDRG 2023 — IOP Conf. Ser.: Mater. Sci. Eng. 1284, 012079 (2023)

New tool for bi-linear pre-straining to study failure under non-linear strain paths in CR4 mild steel.

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On the Failure Prediction of Dual-Phase Steel and Aluminium Alloys Exposed to Combined Tension and Bending
A. Barlo et al.
IOP Conf. Ser.: Mater. Sci. Eng. 651, 012030 (2019)

Failure prediction of DP-steel and aluminium under combined tension and bending loading.

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