Miniature Test Technique for Acquiring True Stress–Strain Curves for a Large Range of Strains Using a Tensile Test and Inverse Finite Element Method

Hafeez Farrukh; M.N. Desmukh; Husain Asif; D.K. Sehgal

doi:10.4028/www.scientific.net/AMM.110-116.4204

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 110-116Miniature Test Technique for Acquiring True...

Miniature Test Technique for Acquiring True Stress–Strain Curves for a Large Range of Strains Using a Tensile Test and Inverse Finite Element Method

Abstract:

The paper presents a non conventional technique to predict the constitutive behavior of materials by assessing the true stress–true strain relationship through miniature specimen tests. The miniature test was conducted on two different types of steel ring specimens (outer diameter14mm, inner diameter 8mm, thickeness 0.5mm) with V-notch (1mm depth) added diametrically to it. A finite element model was developed and validated to calculate the load–deflection curve obtained from the miniature specimen experiment. The constitutive behavior assigned to the specimen for the calculations was determined from the standard tensile test. Using an inverse methodology, it was possible to show that the constitutive behavior from the miniature tests using inverse FE procedure, and that from the conventional standard ASTM test bears close resemblance.

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Periodical:

Applied Mechanics and Materials (Volumes 110-116)

Pages:

4204-4211

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.110-116.4204

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Online since:

October 2011

Authors:

Hafeez Farrukh, M.N. Desmukh, Husain Asif, D.K. Sehgal

Keywords:

Inverse Finite Element, Miniature Specimen, Tensile Behavior, True Stress-True Strain

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