Biaxial tests on cruciform specimens for the validation of crystallographic yield loci

Convex plastic potentials of fourth and sixth rank for anisotropic materials

“…This method enables to estimate the yield locus in full six dimensional stress space, which is necessary for three dimensional finite element simulations of forming problems. Yield loci obtained by means of the Taylor theory for polycrystalline materials have been found to correspond well to experimentally obtained yield loci of annealed metals (see for example MacEwen et al, 1992;Hoferlin et al, 1998;Kuwabara et al, 2002), but not necessarily for cold worked metals. The method of Van Houtte et al (1995) is shortly reminded below because this allows to introduce a series of concepts which are useful for the rest of the paper.…”

Advances of Plasticity Experiments on Metal Sheets and Tubes and Their Applications to Constitutive Modeling

“…There are two types of cruciform specimen (Fig. 2a-b, and the other is directly made of rolled sheet metals [17][18][19][20][21][22], as shown in Figs. One has a smaller thickness in the gage section than at its periphery [13][14][15][16], as shown in Figs.…”

Experimental determination of yield loci for magnesium alloy AZ31 under biaxial tensile stress conditions at elevated temperatures

“…In order to avoid displacements and distortions of the specimen a special kinematical system is applied. Over the years several constructions have been published [8][9][10][11][12][13][14], but the assemblies look very similar. Of course main components of system technology, e.g., the transmission of force have been dramatically improved within the last decades.…”