形状記憶合金の現象論的多軸構成モデルとその応用 : 第1報, 多軸表現の比較とTiNi-SMAモデルへの一般化 (<小特集>インテリジェント材料・流体システム)

概要

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A multiaxial constitutive model to describe the pseudoelastic and shape-memory behavior for TiNi shape memory alloys has been developed from a phenomenological point of view. The rhombohedral and martensitic phase transformations of TiNi shape memory alloys have been taken into account. A generalized expression for the transformation strain range which depends on applied stress and current phase volume fraction has been proposed to obtain closed hysteresis loops for closed cyclic loading paths. The predictive capability of the present model for the hysteretic behavior of TiNi shape memory alloys has been demonstrated through simulations of the stress-strain curves under isothermal uniaxial and multiaxial loading-unloading cycles. A comparison between existing constitutive models for shape memory alloys has been also presented.
社団法人日本機械学会の論文
1997-11-25