Supporting Lightweight Design: Virtual Modeling of Hot Stamping with Tailored Properties and Warm and Hot Formed Aluminium

Vrolijk, Mark; Lorenz, David L.; Porzner, Harald; Holecek, Martin

doi:10.1016/j.proeng.2017.04.049

Cited by 11 publications

(9 citation statements)

References 2 publications

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“…The interfacial heat transfer coefficient at a contact pressure of 20 MPa was investigated in the literature. Then, the study of Bosetti et al suggested about 2 kW/m 2 K [35], the study of Vrolijk et al suggested about 2.8 kW/m 2 K [33], and the study of Liu et al suggested about 9 kW/m 2 K [36]. Therefore, from the average of the above three values, the interfacial heat transfer coefficient at a contact pressure of 20 MPa could be estimated as 4.6 kW/m 2 K. Based on this, the interfacial heat transfer coefficient expressed as a function of contact pressure as shown in Figure 8 was applied to this analysis.…”

Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 98%

“…A forming analysis using PAM-STAMP 2015.01 was performed to obtain the formability sensitivity. It is known that PAM-STAMP can provide reliable forming analysis results for various stamping processes including hot stamping processes [32,33]. In simulations using the explicit dynamic finite element code PAM-STAMP, the die was modeled as a rigid body and the sheet blank was modeled as an elastic-plastic shell element.…”

Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 99%

“…In PAM-STAMP, the interfacial heat transfer coeffici tion of the contact pressure at the interface and the blan transfer coefficient at a contact pressure of 20 MPa was inv the study of Bosetti et al suggested about 2 kW/m 2 K [35] gested about 2.8 kW/m 2 K [33], and the study of Liu et al s Therefore, from the average of the above three values, the cient at a contact pressure of 20 MPa could be estimated a interfacial heat transfer coefficient expressed as a functio in Figure 8 was applied to this analysis. For the full range stress-strain curve of 22MnB5 material, data provided by PAM-STAMP as shown in Figure 9 were used.…”

Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 99%

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A Study on the Effect of Process and Material Variables on the Hot Stamping Formability of Automotive Body Parts

You

Kim

2021

Metals

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Hot stamping is a method capable of manufacturing high-strength automotive body parts by inducing a martensitic phase transformation through forming and die quenching after heating a metal sheet into a high temperature austenite phase. However, it is not easy to solve various formability problems occurring in the hot stamping process due to the complexity of the process and material behavior during high temperature forming. In this study, fracture-related forming limits and martensite phase ratio were selected as criteria for evaluating hot stamping formability. First, a hot stamping test was performed on a T-type part that simplified the B-pillar, an automotive body part, and the fracture behavior according to the temperature and thickness of the sheet blank was investigated. Additionally, forming analysis was performed on the hot stamping process of mass-produced B-pillar parts by varying the temperature of the sheet blank, the thickness of the sheet blank, the die-blank friction coefficient, and the strain-rate sensitivity of material among various process and material variables. Based on the analysis results, the effect of each process and material variable on the hot stamping formability of B-pillar parts was quantitatively analyzed. By utilizing the results of this study, it will be possible to solve the formability problem that occurs in the mass-production hot stamping process for automotive body parts and improve the quality of parts in the future.

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Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 98%

Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 99%

Section: Effect Of Process and Materials Variables On Hot Stamping Fo...mentioning

confidence: 99%

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A Study on the Effect of Process and Material Variables on the Hot Stamping Formability of Automotive Body Parts

You

Kim

2021

Metals

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“…However, the components with high strength and low levels of ductility did not show a good performance in crash energy absorption [3,4]. To improve the energy absorption, tailored hot stamping (THS) components with tailored mechanical properties have been developed [5][6][7][8]. From continuous cooling transformation (CCT) curve, it can be seen that ferrite and bainite can be obtained at cooling rates lower than 30 • C/s [9,10].…”

Section: Introductionmentioning

confidence: 99%

Springback Prediction of a Hot Stamping Component Based on the Area Fractions of Phases

Yan

Zhang

2019

Metals

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Different from traditional hot stamping components with full martensite, the new tailored hot stamping (THS) components have different quenched microstructures, which results in their lower shape accuracy. To investigate the influence of different quenched phases on the springback of a component, a THS experiment of a U-shaped component was performed with segmented heating and a cooling tool. The area fractions of phases at different tool temperatures were obtained by a two-stage color tint etching procedure. Results showed that the quenched phase of the cold zone was almost full martensite. The area fraction of martensite in the hot zone was reduced to the lowest 13% at the tool temperature of 600 • C, while the bainite content reached the highest at 70%. The springback angles at different tool temperatures for quenching were measured by 3D scanning technology and the reverse modeling method. It was revealed that the springback angle increased with the increase of martensite and yet decreased with the increase of bainite. The relationship between the springback angle and the area fractions of the quenched phases was established by means of multiple linear regression analyses. The error analysis results of the predictions and measurements showed that the springback analysis model, based on the area fractions of quenched phases, could be used to predict the springback of hot stamping components with tailored properties.

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“…The analysis of the phenomena occurring during sheet metal stamping is described in publication [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements

2017

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Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements Analiza porównawcza badań doświadczalnych i numerycznych tłoczenia elementów osiowo-symetrycznych Abstract The paper presents experimental and numerical results of the stamping process of an axially-symmetrical element. The subject of the study was a sample made of a 0.47 mm thick aluminium alloy Al-1100 sheet. Experimental studies were conducted on a universal testing machine, while numerical simulations were carried out on two different numerical software programs Abaqus ® and Deform-3D. The results obtained from the numerical analysis allowed to develop a numerical model of the stamping process.Keywords: stamping process, numerical and experimental analysis, Abaqus, Deform-3D Streszczenie W artykule przedstawiono wyniki badań eksperymentalnych i numerycznych procesu tłoczenia elementu osiowo-symetrycznego. Przedmiotem badań była próbka wykonana ze stopu aluminium Al-1100 o grubości 0,47 mm. Badania doświadczalne przeprowadzono na uniwersalnej maszynie wytrzymałościowej, natomiast symulacje numeryczne zrealizowano w dwóch różnych programach komputerowych Abaqus® oraz Deform-3D. Wyniki uzyskane z analizy numerycznej pozwoliły na opracowanie numerycznego modelu procesu tłoczenia.Słowa kluczowe: proces tłoczenia, analizy numeryczne i doświadczalne, Abaqus, Deform-3D

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Supporting Lightweight Design: Virtual Modeling of Hot Stamping with Tailored Properties and Warm and Hot Formed Aluminium

Cited by 11 publications

References 2 publications

A Study on the Effect of Process and Material Variables on the Hot Stamping Formability of Automotive Body Parts

A Study on the Effect of Process and Material Variables on the Hot Stamping Formability of Automotive Body Parts

Springback Prediction of a Hot Stamping Component Based on the Area Fractions of Phases

Comparative analysis of the experimental and numerical research of the stamping process of axially-symmetrical elements

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