M&M材料力学カンファレンス
Online ISSN : 2424-2845
セッションID: OS1609
会議情報
OS1609 形状記憶合金の塑性変形挙動の温度依存性を表すモデル
永井 暁良池田 忠繁
著者情報
会議録・要旨集 フリー

詳細
抄録
To give the two-way shape memory effect to shape memory alloy (SMA), shot peening treatment is locally applied to SMA. Plastic deformation occurs on the shot region, and the region behaves like a bias-spring. To design the two-way SMA actuator optimally, we need a constitutive model of SMA which can capture the plastic deformation as well as elastic deformation and phase transformation. The authors proposed a simple constitutive model which could express the feature of plastic deformation. However, this model could not express temperature dependence of the plastic deformation. In this paper, a new constitutive model of SMA, which can express temperature dependence of plastic deformation, is developed by considering plastic deformation of austenite phase. Stress-strain curves of SMA wire including plastic deformation and fracture are measured and simulated by using the developed model. Comparison between them shows this model can express the feature of the stress-strain curves well.
著者関連情報
© 2013 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top