Numerical modeling of shape memory alloy plates considering tension/compression asymmetry and its verification under pure bending

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:136

Article

Kim, Young-Jin¹  Lee, Chang-Ho²  Kim, Joung-Hun¹  Lim, Jae Hyuk³ 

[1] Def Agcy Technol & Qual, Aeronaut Syst Ctr, Dongjin Ro 420, Jinju Si 52851, Gyeongsangnam D, South Korea

[2] Korea Aerosp Res Inst, Daejeon 34133, South Korea

[3] Chonbuk Natl Univ, Dept Mech Engn, Jeonju Si 54896, Jeollabuk Do, South Korea

关键词: Shape memory alloy plate;    ABAQUS UMAT;    Shape memory effect;    Recovery force;    Pure bending;    Tension-compression asymmetry;   

DOI  :  10.1016/j.ijsolstr.2017.12.004

来源: Elsevier

【 摘 要 】

In this work, a numerical model of a SMA plate reflecting the tension/compression asymmetry of axial stress under pure bending was developed and verified experimentally. To achieve the goal, ABAQUS user-material (UMAT) based on the Brinson model with modified martensite transformation kinetics was proposed with the Drucker-Prager yield criterion to realize the tension/compression symmetry of SMA. To demonstrate the performance of the proposed model, we conducted several predictions on the recovery bending moment with temperature variation with diverse thicknesses under various strain conditions. These results were compared with pure bending test results obtained by a test device that can simulate a pure bending state for maximum 4% axial strain with uniform deformation curvature. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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