背応力の記憶項を考慮した統一型構成モデルによる二軸ラチェットのシミュレーション(<特集>材料の内部構造と力学特性)
2002 年 68 巻 675 号 p. 1582-1587
詳細
2002 年 68 巻 675 号 p. 1582-1587
In this work, a series of biaxial ratchetting tests and numerical simulations are carried out. Experimental results obtained using the tubular specimen of SUS 304 stainless steel subjected to cyclic shear staining under the superposed axial stress show the dependence of the amount of superposed axial stress, the cyclic shear strain amplitude and the shear strain rate. Even under zero superposed stress, the ratchetting strain is induced in the axial direction. Finally, the unified constitutive model proposed by authors is used for the predictions of these biaxial ratchetting. The characteristic features of biaxial ratchetting are well described by the numerical simulation.
