Cracking Prediction in Hot Stamping of High-Strength Steel by a Temperature-Dependent Forming Limit Surface Approach

Liu, Huan; Cui, Junjia; Jiang, Kaiyong; Zhou, Guorui

doi:10.1007/s11665-016-2353-4

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…And the ideal combination of stamping process parameters is established using ABAQUS for numerical simulation. 16 The rationality of the simulation results is verified in actual manufacturing by profile dimensional measurement and Fuji paper test. It provides a basis for the improvement of V-shaped clamp molding performance.…”

Section: Introductionmentioning

confidence: 81%

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Hu,

Qiu,

Mei

et al. 2024

Advances in Mechanical Engineering

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Aiming at the problems that a V-shaped clamp is easy to crack, wrinkle, and springback in the stamping process, a method to improve forming quality by setting the best stamping process parameters is put forward in this paper. The stamping process of the V-shaped clamp was simulated by using the software of ABAQUS, which showed that the stamping process parameters, such as friction coefficient, stamping speed, and mold gap, can affect the forming quality. The optimal combination of stamping process parameters was obtained through an orthogonal experiment. Simulation, profile dimensional measurement, and Fuji paper test were conducted to evaluate and examine the quality of V-shaped clamps before and after optimization. According to the findings of the study, the stamping speed is the main factor affecting the simulation results. The comprehensive effect of the maximum thinning rate, maximum thickening rate, and maximum springback is the best with the stamping speed of 10.00 mm·s−1. The ideal specifications for the stamping process are a 0.16 friction coefficient, a 10.00mm·s−1 stamping speed, and a 2.20 mm mold gap. Process parameter modification can greatly increase the dimensional accuracy and mechanical properties of molded parts.

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Section: Introductionmentioning

confidence: 81%

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Hu,

Qiu,

Mei

et al. 2024

Advances in Mechanical Engineering

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“…Forming limit curve (FLC), which was typically tested by Nakajima test [9] and Marciniak test [10], describes the surface principal strains in sheet metal forming at necking or fracture [11]. FLC is very useful in the process design and optimization for sheet metal forming, and it is a vitally important indicator to evaluate formability [12]. However, only the FLC test at room temperature was standardized up to now [13].…”

Section: Introductionmentioning

confidence: 99%

“…Li et al [14] established a forming limit prediction model based on the M-K theory, and the results show that the model had a higher predictive value in the tensile region of minor strain than compressive region. Liu et al [12] combined biaxial tension experiments and simulations based on M-K model to predict high-strength steel BR1500HS cracking under hot stamping condition. Lin et al [19] established a multiaxial model based on continuum damage mechanics to predict forming limit diagram of AA5754 under hot stamping conditions.…”

Section: Introductionmentioning

confidence: 99%

Behaviors and modeling of thermal forming limits of AA7075 aluminum sheet

Xiao

Wang

2020

Archiv.Civ.Mech.Eng

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The aluminum hot stamping process has been widely studied to produce lightweight parts in automobile industry. As forming limit of aluminum sheet at elevated temperatures plays a vital role in judging stamping formability, this study aims at experimentally investigating the forming limits and establishing a constitutive model to predict them. In this study, isothermal deformation test (Nakajima test) of AA7075 was conducted to determine its forming limits at temperatures of 300-450 °C and stamping speeds of 13-40 mm/s. Based on the experimental results, a constitutive model considering continuum damage mechanics was established to predict the forming limits under different deformation conditions. It was found that the formability of the material is best at 400 °C, and a higher strain rate can improve formability slightly. The comparisons between model predictions and experimental results were evaluated; results indicated a good prediction accuracy of the model in describing forming limits of AA7075 at elevated temperatures. Moreover, comparison between different studies on the thermal forming limits of AA7075 was discussed in detail.

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Hot stamping forming and finite element simulation of USIBOR1500 high-strength steel

Zhang

Zhu²,

Luo

et al. 2019

Int J Adv Manuf Technol

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Cracking Prediction in Hot Stamping of High-Strength Steel by a Temperature-Dependent Forming Limit Surface Approach

Cited by 8 publications

References 18 publications

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Influence and improvement of stamping process parameters on V-shaped clamp forming quality

Behaviors and modeling of thermal forming limits of AA7075 aluminum sheet

Hot stamping forming and finite element simulation of USIBOR1500 high-strength steel

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