繰返し前負荷を受けた SUS 304材の単軸, ニ軸粘塑性変形挙動

概要

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A series of tests for creep and biaxial ratchetting during cyclic loading were carried out to investigate the interaction between cyclic plasticity and creep or ratchetting of SUS 304 stainless steel. Specimens were subject to intermittent creep or biaxial ratchetting at several stress levels during cyclic tension-compression loading with the constant strain amplitude under the constant stress rate. The test results showed that the creep curve during cyclic loading could be explained by the so-called Bailey-Norton law, with stress levels measured from the current center of the yield surface which was determined by the hybrid constitutive equation for cyclic plasticity proposed by authors. Axial ratchet strain induced by cyclic shear stressing was expressed by the shear stress amplitude, the number of cycles and the axial stress level measured from the current center of the yield surface.
一般社団法人日本機械学会の論文
1991-12-25