Investigation of the Shape of a Cruciform Biaxial Tensile Specimen Intended for a Combination of Plane Strain Tensile States

Abstract:

This study investigates the shape of a cruciform specimen that is stretched in the normal direction of the minimum cross section using FEM. In addition, plane strain tensile states exist in the measurement region in order to determine the forming limit diagram not by an arbitrary stress ratio but by the strain ratio. We propose two types of cruciform specimens. One is a flat-type cruciform specimen, which has deep slits in the middle of the arm region in the width direction. The other specimen is a reduced measurement region type, which also has deep slits as well as a shape that is a biaxial combination of two plane strain tensile specimens. We analyze equibiaxial tensile tests of these two proposed cruciform specimen types using FEM.

• Periodical: Key Engineering Materials (Volumes 622-623)
• Pages: 308-313
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.622-623.308
• Online since: September 2014
• Authors: Hayato Usui*, Takashi Iizuka
• Keywords: Biaxial Tensile Test, Cruciform Specimen, FEM, Plane Strain

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