Procedure for the Determination of True Stress-Strain Curves From Tensile Tests With Rectangular Cross-Section Specimens-Reference-Cited by-同舟云学术

Procedure for the Determination of True Stress-Strain Curves From Tensile Tests With Rectangular Cross-Section Specimens

Published:2004-01-01 Issue:1 Volume:126 Page:70-76
ISSN:0094-4289
Container-title:Journal of Engineering Materials and Technology
language:en
Short-container-title:

Author:

Scheider I.¹,Brocks W.¹,Cornec A.¹

Affiliation:

1. GKSS-Forschungszentrum Geesthacht, Postfach 1160, D-21494 Geesthacht

Abstract

The problem of determining true stress-strain curves from flat tensile specimens beyond the onset of necking has been investigated based on finite element analyses under consideration of experimental accessible data using digital image correlation (DIC). The displacement field on the specimen surface is determined by in-situ deformation field measurement. A three-dimensional finite element study with different stress-strain-curves has been carried out to develop a formula, with which it is possible to calculate the true stress subject to the strain in the necking region. The method has been used to evaluate the true stress-strain curve with a so-called micro flat tensile specimen, which is normally used to determine the material properties in the material gradient around thin weldments.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/materialstechnology/article-pdf/126/1/70/5700376/70_1.pdf

Reference10 articles.

1. Bridgman, P.W., 1952, Studies in Large Plastic Flow, McGraw Hill, New York.

2. Ling, Y., 1996, “Uniaxial True Stress-Strain After Necking,” AMP J. Technology, 5, pp. 37–48.

3. Zhang, Z.L., Hauge, M., Odegard, J., and Thaulow, C., 1999, “Determining Material True Stress-Strain Curve From Tensile Specimens With Rectangular Cross Section,” Int. J. Solids Struct., 36, pp. 3497–3516.

4. Zhang, Z.L., Odegard, J., and Thaulow, C., 2000, “Novel Methods for Determining True Stress Strain Curves of Weldments and Homogenous Materials,” Proc. 13th European Conference on Fracture Mechanics, M. Fuentes, M. Elices, J.M.M. Esnaolo, and A.M. Meizoso, eds., Elseveier Sc. Ltd.

5. ASTM E8, 1999, Standard Test Methods for Tension Testing of Metallic Materials, American Society for Testing and Materials, West Conshohocken, PA.

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