Analysis of Nonisothermal Deep Drawing of Aluminum Alloy Sheet With Induced Anisotropy and Rate Sensitivity at Elevated Temperatures

Ghavam, Kamyar; Bagheriasl, Reza; Worswick, Michael J.

doi:10.1115/1.4025407

Cited by 15 publications

(3 citation statements)

References 31 publications

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“…Due to its better formability, only nonisothermal cup deep drawing of aluminum alloy is considered here. The authors in [6,7] proved this phenomenon through experiment and simulation methods. In Figure 2, the blank holder and die are heated, and the punch is cooled by cyclic cold water.…”

Section: Insight Analysis Of Stress and Plastic Strain Evolution In Wmentioning

confidence: 87%

A Consistent Relationship between the Stress and Plastic Strain Components and Its Application in Deep Drawing Process

Zhang

Qin

et al. 2017

Mathematical Problems in Engineering

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As von Mises yield criterion and associated flow rule (AFR) are widely applied in metal forming field, a semitotal deformation consistent relationship between the stress and plastic strain components and the rule of dimensional changes of metal forming processes in a plane-stress state are obtained on the basis of them in this paper. The deduced consistent relationship may be easily used in forming interval of the workpiece. And the rule of dimensional changes can be understood through three plastic strain incremental circles on which the critical points can be easily determined on the same basis. Analysis of stress and plastic strain evolution of aluminum warm deep drawing process is conducted, and the advantage of nonisothermal warm forming process is revealed, indicating that this method has the potential in practical large deformation applications.

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Section: Insight Analysis Of Stress and Plastic Strain Evolution In Wmentioning

confidence: 87%

A Consistent Relationship between the Stress and Plastic Strain Components and Its Application in Deep Drawing Process

Zhang

Qin

et al. 2017

Mathematical Problems in Engineering

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“…Such a model may be important to apply when forming procedures that subject hcp crystal structured materials to both tension and compressive straining are studied. The yield criteria proposed by Barlat and Cazacu have successfully been applied to the FE analyses of thermo-mechanical forming of aluminum [33][34][35][36], Ti-6Al-4V [20][21][22][23], and magnesium [37] with modified anisotropy and symmetry parameters proposed by Ghaffari et al [38].…”

Section: Introductionmentioning

confidence: 99%

Finite element modeling and validation of springback and stress relaxation in the thermo-mechanical forming of thin Ti-6Al-4V sheets

Odenberger

Pederson

Oldenburg

2019

Int J Adv Manuf Technol

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In this work, a hot forming procedure is developed using computer-aided engineering (CAE) to produce thin Ti-6Al-4V sheet components in an effective way. Traditional forming methods involve time-and cost-consuming furnace heating and subsequent hot sizing steps. A material model for finite element (FE) analyses of sheet metal forming and springback at elevated temperatures in Ti-6Al-4V is calibrated and evaluated. The anisotropic yield criterion proposed by Barlat et al. 2003 is applied, and the timeand temperature-dependent stress relaxation behavior for elastic and inelastic straining are modeled using a Zener-Wert-Avrami formulation. Thermo-mechanical uniaxial tensile tests, a biaxial test, and uniaxial stress relaxation tests are performed and used as experimental reference to identify material model parameters at temperatures up to 700°C. The hot forming tool setup is manufactured and used to produce double-curved aero engine components at 700°C with different cycle times for validation purposes. Correlations between the predicted and measured responses such as springback and shape deviation show promising agreement, also when the forming and subsequent holding time was as low as 150 s. The short cycle time resulted in elimination of a detectable alpha case layer. Also, the tool surface coating extends the tool life in combination with a suitable lubricant.

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“…Many other published papers also revealed the advantage of the Yld2000-2d over the von Mises, Hill48, and Barlat89 [13][14][15][16][17]. In the field of warm forming, many researchers have studied the application feasibility of Yld2000-2d [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Implementation issues of Yld2000-2d model under larger biaxial yield stress

Zhang

Sun

2018

Mechanics & Industry

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In the field of sheet forming simulation, yield models serve as one of the most crucial factors for accurate computational results, and plane stress yield models have the capacity for both high efficiency and high accuracy. During recent years, applications of the Yld2000-2d model to sheet forming simulation of steel and aluminum have become increasingly popular due to its outstanding ability in describing these materials’ yield phenomena. For the computational implementation of this model, the Newton–Raphson iteration can correctly obtain the solutions of return mapping equations in most cases. However, it has been found in this work that the traditional iteration process may fall into a convergence problem when the yield stress is prominent (σb/σ0 > 1.2). To solve the new finding problem, a line search algorithm is added to the Newton–Raphson iteration process. Biaxial tension simulation results show that the line search algorithm could converge successfully even when σb/σ0 = 1.4. The simulation of the Erichsen test shows the applicability of the established Yld2000-2d model combined with a line search algorithm in the Newton–Raphson iteration process.

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Analysis of Nonisothermal Deep Drawing of Aluminum Alloy Sheet With Induced Anisotropy and Rate Sensitivity at Elevated Temperatures

Cited by 15 publications

References 31 publications

A Consistent Relationship between the Stress and Plastic Strain Components and Its Application in Deep Drawing Process

A Consistent Relationship between the Stress and Plastic Strain Components and Its Application in Deep Drawing Process

Finite element modeling and validation of springback and stress relaxation in the thermo-mechanical forming of thin Ti-6Al-4V sheets

Implementation issues of Yld2000-2d model under larger biaxial yield stress

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