Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test
Qing-bao Yang1 Jun-ying Min1 John E. Carsley2 Yuan-yuan Wen1 Bernd Kuhlenko��tter3 Thomas B. Stoughton2 Jian-ping Lin1
1 School of Mechanical Engineering, Tongji University, Shanghai 201804, China 2 General Motors Research & Development, Warren, MI 48095-9055, USA 3 Chair of Production Systems, Ruhr-University Bochum, Bochum 44780, Germany
Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test
Qing-bao Yang1 Jun-ying Min1 John E. Carsley2 Yuan-yuan Wen1 Bernd Kuhlenko��tter3 Thomas B. Stoughton2 Jian-ping Lin1
1 School of Mechanical Engineering, Tongji University, Shanghai 201804, China 2 General Motors Research & Development, Warren, MI 48095-9055, USA 3 Chair of Production Systems, Ruhr-University Bochum, Bochum 44780, Germany
ժҪ Plane-strain forming limit strain (also known as FLD0) is an important data point on a forming limit diagram (FLD). The effects of friction coefficients and material parameters on the specimen width associated with the FLD0 (WFLD0) in Marciniak test were studied by finite element simulation. WFLD0 was expressed as a function of the Lankford coefficients, n-value, k-value and sheet thickness and validated with various sheet materials. The determination of WFLD0 is of significance not only to reduce iterative attempts to accurately obtain FLD0, but also to obtain a full valid FLD with the least number of test specimens, which largely increases the efficiency and reduces cost to experimentally measure valid FLDs.
Abstract��Plane-strain forming limit strain (also known as FLD0) is an important data point on a forming limit diagram (FLD). The effects of friction coefficients and material parameters on the specimen width associated with the FLD0 (WFLD0) in Marciniak test were studied by finite element simulation. WFLD0 was expressed as a function of the Lankford coefficients, n-value, k-value and sheet thickness and validated with various sheet materials. The determination of WFLD0 is of significance not only to reduce iterative attempts to accurately obtain FLD0, but also to obtain a full valid FLD with the least number of test specimens, which largely increases the efficiency and reduces cost to experimentally measure valid FLDs.
Qing-bao Yang Jun-ying Min John E. Carsley Yuan-yuan Wen Bernd Kuhlenko��tter Thomas B. Stoughton Jian-ping Lin. Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test[J].Journal of Iron and Steel Research International, 2018, 25(5): 539-545.
Qing-bao Yang Jun-ying Min John E. Carsley Yuan-yuan Wen Bernd Kuhlenko��tter Thomas B. Stoughton Jian-ping Lin. Prediction of plane-strain specimen geometry to efficiently obtain a forming limit diagram by Marciniak test. , 2018, 25(5): 539-545.
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2018, Vol. 25 
