Experimental characterization and elasto-plastic modeling of the quasi-static mechanical response of TA-6 V at room temperature

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:48

Article

Gilles, G.¹  Hammami, W.¹  Libertiaux, V.¹  Cazacu, O.²  Yoon, J. H.²  Kuwabara, T.³  Habraken, A. M.¹  Duchene, L.¹ 

[1] Univ Liege, Dept ArGEnCo, Div MS2F, B-4000 Liege, Belgium

[2] Univ Florida REEF, Dept Mech & Aerosp Engn, Shalimar, FL 32579 USA

[3] Tokyo Univ Agr & Technol, Div Adv Mech Syst Engn, Grad Sch, Koganei, Tokyo 1848588, Japan

关键词: TA-6 V titanium alloy;    Anisotropic material;    Tension-compression asymmetry;    Anisotropic yield function;   

DOI  :  10.1016/j.ijsolstr.2011.01.011

来源: Elsevier

【 摘 要 】

The paper presents an experimental study of the quasi-static deformation behavior of a TA-6 V in sheet form. To quantify the plastic anisotropy and the tension-compression asymmetry of this material at room temperature, monotonic tensile and compressive tests were carried out on specimens cut out along several orientations in the plane of the sheet. It was observed that although the tensile flow stress anisotropy is very mild, the Lankford coefficients' anisotropy is very pronounced. To describe the observed mechanical response an elastic/plastic approach was used. Yielding was described using a family of yield criteria that account for strength differential effects and allow an improved description of the anisotropy and its evolution through multiple linear transformations. Comparisons between uniaxial monotonic data and FE simulations using the model show a very good agreement. (C) 2011 Elsevier Ltd. All rights reserved.

【 授权许可】

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