Continuous, large strain, tension/compression testing of sheet material

Boger, R.K.; Wagoner, R. H.; Barlat, Frédéric; Lee, M.G.; Chung, Kwansoo

doi:10.1016/j.ijplas.2004.12.002

Cited by 234 publications

(106 citation statements)

References 31 publications

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“…Using the meshing technology, the mesh size of 0.2 mm by 0.2 mm within the gauge region was used. Since this mesh density is close to that of Boger et al's study [13] and is much less than that of Cao et al's analysis (Cao et al 2009, which is 0.75 mm by 0.75 mm), the mesh technology used in this study can be used to capture the buckling, stress and strain distribution for the compression test of DP600 sheets. Two parameters influencing the compression process are the initial clearance (C i ) between the specimen and the supports, and the normal side force (F n ) loading on the specimen.…”

Section: Methodssupporting

confidence: 64%

Compression deformation behaviors of sheet metals at various clearances and side forces

Zhan

Wang

Cao

et al. 2015

MATEC Web of Conferences

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Abstract. Modeling sheet metal forming operations requires understanding of plastic behaviors of sheet metals along non-proportional strain paths. The plastic behavior under reversed uniaxial loading is of particular interest because of its simplicity of interpretation and its application to material elements drawn over a die radius and underwent repeated bending. However, the attainable strain is limited by failures, such as buckling and inplane deformation, dependent on clearances and side forces. In this study, a finite element (FE) model was established for the compression process of sheet specimens, to probe the deformation behavior. The results show that: With the decrease of the clearance from a very large value to a very small value, four defects modes, including plastic t-buckling, microbending, w-buckling, and in-plane compression deformation will occur. With the increase of the side force from a very small value to a very large value, plastic t-buckling, w-buckling, uniform deformation, and in-plane compression will occur. The difference in deformation behaviors under these two parameters indicates that the successful compression process without failures for sheet specimens only can be carried out under a reasonable side force.

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Section: Methodssupporting

confidence: 64%

Compression deformation behaviors of sheet metals at various clearances and side forces

Zhan

Wang

Cao

et al. 2015

MATEC Web of Conferences

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“…To improve spring-back predictability in numerical simulation, many researchers have been trying to use accurate information of the hardening behaviour of sheet materials in finite element analysis. The hardening behaviour of sheet materials has been measured with various mechanical testing methods in the quasi-static region [1][2][3]. It has been successful to predict spring-back accurately with numerical simulation by applying the precise hardening behaviour obtained from tension/compression tests at the quasi-static state [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…The compression-type coil springs were selected for the desired clamping pressure calculated by the plate buckling theory adopted by Cao and Wang [6]. Based on the secant formula and the Euler method adopted by Boger et al [2], specimen dimensions were also designed to prevent buckling along the width direction in the gauge section and along the longitudinal direction in the unclamped region. The strain in the gauge region of the specimen was measured directly by the digital image processing technique.…”

Section: Introductionmentioning

confidence: 99%

Tension/compression test of auto-body steel sheets with the variation of the pre-strain and the strain rate

Bae

Huh

2011

Materials Characterisation V

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This paper investigates the tension/compression hardening behaviour of autobody steel sheets with the variation of the pre-strain and the strain rate. To conduct tension/compression tests with the variation of the pre-strain and the strain rate, an experimental method was established by using a newly developed clamping device to suppress buckling of a specimen. The clamping device provides the supporting force from compression-type coil springs during the test with a conventional dynamic material fatigue testing machine. From experiments, the tension/compression hardening behaviour was observed with the variation of the pre-strain and the strain rate. Effects of the pre-strain and the strain rate on the hardening behaviour were also investigated based on the tension/compression test results.

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“…Most of previous papers on material modeling for aluminum sheets focus either on the description of the Bauschinger effect (e.g., Boger et al 19) ) or on the anisotropic yield function (e.g., Barlat et al;…”

Section: Framework Of Materials Modelingmentioning

confidence: 99%

Experimental Observation of Elasto-Plasticity Behavior of Type 5000 and 6000 Aluminum Alloy Sheets

et al. 2011

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Elasto-plasticity behavior of type A5052-O and AA6016-T4 aluminum alloy sheets was examined by performing several experiments of uniaxial tension, biaxial stretching and in-plane cyclic tension-compression. Both sheets exhibit apparent r-value planar anisotropy, especially for AA6016-T4 it is extremely strong, while their flow stress directionality under uniaxial tension is not so significant. Both the sheets show strong cyclic hardening with weak Bauschinger effect. Such material behavior is well described by Yoshida-Uemori kinematic hardening model combined with an appropriate choice of anisotropic yield function.

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Continuous, large strain, tension/compression testing of sheet material

Cited by 234 publications

References 31 publications

Compression deformation behaviors of sheet metals at various clearances and side forces

Compression deformation behaviors of sheet metals at various clearances and side forces

Tension/compression test of auto-body steel sheets with the variation of the pre-strain and the strain rate

Experimental Observation of Elasto-Plasticity Behavior of Type 5000 and 6000 Aluminum Alloy Sheets

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