Experimental and Numerical Studies on Formability of Tailor Welded Blanks of High Strength Steel

Gautam, Vijay; Kumar, Arvind

doi:10.1016/j.promfg.2019.02.164

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…Due to the fact that Tailored Blanks are usually semi-finished products from which individual products are then manufactured, deformability is an important issue. This characteristic can be influenced by many factors, such as the state of stress in the material, which, in the case of some TB technologies, significantly affects their formability [9,10].…”

Section: Introductionmentioning

confidence: 99%

The Estimation of the Stress State of the Iron Alloy Strip Material by the Barkhausen Noise Method

Krawczyk,

Sułek,

Kokosza

et al. 2024

Crystals

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This paper presents the effect of the complex strain state resulting from the asymmetric rolling of TRB products on the changes and distribution of the stress state in the material. The evaluation of the stress state in the material was based on measurements of the magnetoelastic parameter (MP) using the Barkhausen magnetic noise method. The key characteristics of the material under study that enabled the use of changes in the MP parameter to assess the stress state were ferromagnetism and a lack of texture. The first of these enabled the detection of the magnetic signals produced when a magnetic field is applied to the material, causing magnetic domains to align and sudden changes in magnetization. On the other hand, the absence of texture in the material precluded the occurrence of magnetocrystalline anisotropy, which could disturb the results of measurements of the magnetoelastic parameter in the material. In order to determine these features in the material under study, its chemical composition was determined, and a phase analysis was carried out using the X-ray diffraction method. The results of these tests showed the possibility of determining the stress state of the material by means of changes in the values of the MP parameter. On this basis, it was shown that in the TRB strips studied, there is a complex state of stress, the values of which and the nature of the changes depending on the direction of the measurements carried out, as well as on the amount of rolling reduction in the studied area of the strip.

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Section: Introductionmentioning

confidence: 99%

The Estimation of the Stress State of the Iron Alloy Strip Material by the Barkhausen Noise Method

Krawczyk,

Sułek,

Kokosza

et al. 2024

Crystals

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show abstract

“…They investigated the thickness ratios' influence on the weld line's movement at different temperatures. Gautam and Kumar [13] studied the formability of TWBs with high-strength steel JSC590RN parent sheets.…”

Section: Introductionmentioning

confidence: 99%

Neural Network-Based Multi-Objective Optimization of Adjustable Drawbead Movement for Deep Drawing of Tailor-Welded Blanks

et al. 2022

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To improve the formability in the deep drawing of tailor-welded blanks, an adjustable drawbead was introduced. Drawbead movement was obtained using the multi-objective optimization of the conflicting objective functions of the fracture and centerline deviation simultaneously. Finite element simulations of the deep drawing processes were conducted to generate observations for optimization. The response surface method and artificial neural network were used to determine the relationship between variables and objective functions; the procedure was applied to a circular cup drawing of the tailor-welded dual-phase steel blank. The results showed that the artificial neural network had better prediction capability and accuracy than the response surface method. Additionally, the non-dominated sorting-based genetic algorithm (NSGA-II) could effectively determine the optima. The adjustable drawbead with the optimized movement was confirmed as an efficient and effective solution for improving the formability of the deep drawing of tailor-welded blanks.

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“…Accurate simulation can reduce the cost of tools manufacturing and reject rates of parts [24]. Several studies have found that the numerical simulation is an effective tool for analyzing the stamping forming process of TWBs [25][26][27]. The finite element (FE) modelling of TWBs is more complex than that of the single material plate because of the existence of the weld [28].…”

Section: Introductionmentioning

confidence: 99%

Control of defects in the deep drawing of tailor-welded blanks for complex-shape automotive panel

Wang

Liu

Wang

et al. 2022

Int J Adv Manuf Technol

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With the development of lightweight vehicles, tailor welded blanks (TWBs) are increasingly used in the automotive industry. Splitting and wrinkling are the main defects during the deep drawing of TWBs. A new method to control the forming defects was introduced in the forming process of TWBs in this study. The microstructure and mechanical properties of TWBs were characterized through metallography and tensile tests. Finite element modelling of an automobile rear door inner panel made of TWBs was built to analyse deep drawing. Edge cutting and notch cut were introduced in the drawing to deal with forming defects and reduce the number of stamping tools. The minimum distance between the material draw-in and trimming lines, thinning index and thickening index were defined as the measurable index to analyse the numerical results. Orthogonal experiment, numerical simulation and multiobjective experiment were utilised to optimize the forming parameters. The proposed method and optimised parameters were verified through experiments. The experimental results are basically consistent with the numerical simulation. Results demonstrate that the proposed method can provide some guidance for controlling the defects in deep drawing of TWBs for complex shape automotive panel.

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Experimental and Numerical Studies on Formability of Tailor Welded Blanks of High Strength Steel

Cited by 13 publications

References 12 publications

The Estimation of the Stress State of the Iron Alloy Strip Material by the Barkhausen Noise Method

The Estimation of the Stress State of the Iron Alloy Strip Material by the Barkhausen Noise Method

Neural Network-Based Multi-Objective Optimization of Adjustable Drawbead Movement for Deep Drawing of Tailor-Welded Blanks

Control of defects in the deep drawing of tailor-welded blanks for complex-shape automotive panel

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