Plastic deformation of ultra-thin pure titanium sheet subject to tension-compression loadings

Hou, Yong; Zhang, X L; Min, Junying; Lee, M G

doi:10.1088/1757-899x/1270/1/012020

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…The strain field was measured by the DIC method on one of the edge surfaces of the UC specimen (see Figure 17 b). Hou et al [ 249 ] further used this setup to determine the UC stress–strain curves of ultra-thin pure titanium bipolar plates based on a newly designed sandwich specimen. The above-mentioned UC anti-buckling fixture can be further utilized for the tension-compression cyclic loading experiment of sheet metals and realize the investigation of the Bauschinger effect, which will be detailed in Section 4.2 .…”

Section: Advanced Experimental Techniques To Identify the Constitutiv...mentioning

confidence: 99%

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

Hou

Myung

Park³

et al. 2023

Materials

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Lightweight sheet metals are attractive for aerospace and automotive applications due to their exceptional properties, such as low density and high strength. Sheet metal forming (SMF) is a key technology to manufacturing lightweight thin-walled complex-shaped components. With the development of SMF, numerical simulation and theoretical modelling are promoted to enhance the performance of new SMF technologies. Thus, it is extraordinarily valuable to present a comprehensive review of historical development in SMF followed by state-of-the-art advanced characterization and modelling approaches for lightweight metallic materials. First, the importance of lightweight materials and their relationship with SMF followed by the historical development of SMF are reviewed. Then, the progress of advanced finite element technologies for simulating metal forming with lightweight alloys is covered. The constitutive modelling of lightweight alloys with an explanation of state-of-the-art advanced characterization to identify the constitutive parameters are presented. Then, the formability of sheet metals with major influencing factors, the techniques for measuring surface strains in SMF and the experimental and modelling approaches for determining the formability limits are clarified. Finally, the review is concluded by affording discussion of the present and future trends which may be used in SMF for lightweight metallic materials.

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Section: Advanced Experimental Techniques To Identify the Constitutiv...mentioning

confidence: 99%

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

Hou

Myung

Park³

et al. 2023

Materials

View full text Add to dashboard Cite

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“…Uniaxial compression tests are performed on the universal testing machine MTS E45.105 (Fig. 3) with the aid of a supporting fixture, which was designed to suppress the premature buckling of the thin sheet specimens in the thickness direction during the axial compression [45]. The specialized specimens, which are cut by WEDM along 0°, 45°, and 90° to the RD, have a rectangular gauge area of 36.2 mm by 15.2 mm.…”

Section: Uniaxial Compressionmentioning

confidence: 99%

Non-associated and Non-quadratic Characteristics in Plastic Anisotropy of Automotive Lightweight Sheet Metals

Hou,

Min,

Lee

2023

Automot. Innov.

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Lightweight sheet metals are highly desirable for automotive applications due to their exceptional strength-to-density ratio. An accurate description of the pronounced plastic anisotropy exhibited by these materials in finite element analysis requires advanced plasticity models. In recent years, significant efforts have been devoted to developing plasticity models and numerical analysis methods based on the non-associated flow rule (non-AFR). In this work, a newly proposed coupled quadratic and non-quadratic model under non-AFR is utilized to comprehensively investigate the non-associated and non-quadratic characteristics during the yielding of three lightweight sheet metals, i.e., dual-phase steel DP980, TRIP-assisted steel QP980, and aluminum alloy AA5754-O. These materials are subjected to various proportional loading paths, including uniaxial tensile tests with a 15° increment, uniaxial compressive tests with a 45° increment, in-plane torsion tests, and biaxial tensile tests using laser-deposited arm-strengthened cruciform specimens. Results show that the non-AFR approach provides an effective means for accurately modeling the yield behavior, including yield stresses and the direction of plastic strain rates, simultaneously, utilizing two separate functions and a simple calibration procedure. The introduction of the non-quadratic plastic potential reduces the average errors in angle when predicting plastic strain directions by the quadratic plastic potential function. Specifically, for DP980, the average error is reduced from 3.1° to 0.9°, for QP980 it is reduced from 6.1° to 3.9°, and for AA5754-O it is reduced from 7.0° to 0.2°. This highlights the importance of considering the non-quadratic characteristic in plasticity modeling, especially for aluminum alloys such as AA5754-O.

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Plastic deformation of ultra-thin pure titanium sheet subject to tension-compression loadings

Cited by 2 publications

References 19 publications

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

A Review of Characterization and Modelling Approaches for Sheet Metal Forming of Lightweight Metallic Materials

Non-associated and Non-quadratic Characteristics in Plastic Anisotropy of Automotive Lightweight Sheet Metals

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