Evaluation of heterogeneous mechanical tests for model calibration of sheet metals

Oliveira, Miguel Guimarães; Thuillier, Sandrine; Andrade‐Campos, A.

doi:10.1177/03093247211027061

Cited by 7 publications

(5 citation statements)

References 40 publications

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“…Finally, it is important to underline that a key point in this field is the definition of suitable metrics to evaluate and compare different specimen geometries. [ 102 ]…”

Section: Heterogeneous Tests Coupled With Inverse Methodsmentioning

confidence: 99%

Testing methodologies for the calibration of advanced plasticity models for sheet metals: A review

Rossi

Lattanzi

Morichelli

et al. 2022

Strain

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Numerical simulations have become essential in engineering and manufacturing processes involving plasticity. The reliability and effectiveness of the simulations depend strongly on the accuracy of the adopted constitutive model. Accordingly, in recent years, an increasing interest is pointed towards experimental procedures and characterization methods that can be used to identify the constitutive parameters of advanced plasticity models, which allow to simulate properly the plastic behaviour of complex materials like, for instance, high strength steel. This paper provides a thorough review of the current stateof-the-art, looking at both academia and industry. The available methodologies can be subdivided in two main areas: quasi-homogeneous material tests with analytical or numerical post-treatment of the experimental data and heterogeneous tests coupled with inverse methods for parameter identification. For each method, a brief description and references to norms and articles is provided, illustrating the advantages and the disadvantages.

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“…Finally, it is important to underline that a key point in this field is the definition of suitable metrics to evaluate and compare different specimen geometries. [ 102 ]…”

Section: Heterogeneous Tests Coupled With Inverse Methodsmentioning

confidence: 99%

Testing methodologies for the calibration of advanced plasticity models for sheet metals: A review

Rossi

Lattanzi

Morichelli

et al. 2022

Strain

Self Cite

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“…al. [18], evaluates the sensitivity of the test to anisotropy. It was derived from Mohr's circle equations, and it was introduced for a plane stress state.…”

Section: Heterogeneous Tests Analysismentioning

confidence: 99%

On the comparison of heterogeneous mechanical tests for sheet metal characterization

Goncalves

2023

Materials Research Proceedings

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Abstract. The characterization of sheet metal behavior is of utmost importance for the accurate virtualization of sheet metal forming processes. Newly proposed mechanical testing approaches are overcoming the use of standard mechanical tests. Test configurations with more complex geometries present richer mechanical fields and, therefore, provide a higher quantity of valuable information about the material behavior in a more efficient manner. To extract that information, full-field measurement techniques such as Digital Image Correlation are being used. Although several test designs have already been proposed, the choice of the best one to calibrate a chosen mechanical model is still an issue. This work aims at proposing Key Performance Indicators (KPIs) that are able to rank mechanical tests by their potential to enhance the material behavior characterization process. These metrics evaluate quantitatively the quality and the importance of the data that each test can provide. The potential of three test designs to characterize accurately sheet metal mechanical behavior is analyzed using the proposed KPIs. From a uniaxial tensile loading test up to rupture, the numerical mechanical information is extracted, and the performance of each test is evaluated and compared.

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“…To be consistent with previous studies aimed to quantify the heterogeneity of the mechanical states produced by unconventional mechanical test [19,25], the classification and comparison of the three strategies is carried out following two main visualization methods:…”

Section: Fig 4 Maps Of Accumulated Equivalent Plastic Strain Over The...mentioning

confidence: 99%

Determination of the forming limit curve of locally annealed aluminum blanks

Piccininni

2023

Materials Research Proceedings

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Abstract. The research of innovative manufacturing routes to improve the complexity of structural Aluminum (Al) components and reduce the vehicles’ weight remains an open question. The adoption of short-term heat treatments to obtain an optimized distribution of properties has shown great potential in enhancing the formability of Al alloys at room temperature. Such a complex approach needs the implementation of methodologies based on numerical simulations able to correctly simulate the forming process. Accordingly, the definition of a proper identification procedure to provide reliable constitutive parameters, possibly employing a limited number of tests, becomes crucial. In this work, we introduce a novel methodology for the evaluation of the Forming Limit Curve (FLC) of laser annealed AA5752-H32 sheet based on the material information from different heterogeneous tests carried out in specific tribological condition, i.e. in absence of friction. Therefore, we investigate an experimental procedure to simultaneously generate an equi-biaxial mechanical state over a wide range of annealing conditions by means of hydraulic bulge test. The results are integrated with full-field data from uniaxial tensile and plane strain tests to provide a testing protocol for the characterization of the failure behavior accounting for the different temperature/time conditions of the sheet metal.

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Evaluation of heterogeneous mechanical tests for model calibration of sheet metals

Cited by 7 publications

References 40 publications

Testing methodologies for the calibration of advanced plasticity models for sheet metals: A review

Testing methodologies for the calibration of advanced plasticity models for sheet metals: A review

On the comparison of heterogeneous mechanical tests for sheet metal characterization

Determination of the forming limit curve of locally annealed aluminum blanks

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