The Strength of Metals under Combined Alternating Bending and Torsion with Phase Difference

Nishihara, Toshio; Kawamoto, Minoru

doi:10.1299/jsmemag.49.334_3

Cited by 58 publications

(72 citation statements)

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“…We have finally checked the effectiveness of our model in fitting experimental results and in predicting failure. To this end, we use some of the experimental data which can be found in the literature (see [8,11,12,18,20]). In each case, we have used the data coming from simple tension compression tests (called training points in the sequel) to fit the parameters of the model and to make predictions for the other observations.…”

Section: Resultsmentioning

confidence: 99%

Fast time-scale average for a mesoscopic high cycle fatigue criterion

Bosia

Constantinescu

2012

International Journal of Fatigue

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The paper discusses the lifetime prediction of structures in high-cycle fatigue based on the two-scale fatigue criteria of Dang Van type and several of its extensions in finite lifetime regime. The main assumptions for this criteria are (i) the material is polycrystalline and undergoes localised plasticity in one of the misoriented grains and (ii) crack initiation arises as a consequence of cumulated plasticity in this grain.\ud \ud The novelty of the presented approach is twofold. On the one hand a generalisation of mesoscopic plasticity model is presented, on the other a fast time scale average is introduced for tracking the cyclic material behaviour and the subsequent evolution of damage. The tracking method is based on the split between a quick quasi-periodic response of the system to the cyclic load and a slow evolution of the internal hardening and damage parameters of the material at the mesoscopic scale. The proposed method can be extended to a large class of local material behaviours involving not only plasticity, but also crack and damage evolution.\ud \ud The paper proposes a simplified plasticity-based model for the mesoscopic material behaviour and presents a comparison between predicted and experimental lifetimes. The results are discussed in terms of prediction capabilities and also in terms of the identification procedure of parameters of the mesoscopic model

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Section: Resultsmentioning

confidence: 99%

Fast time-scale average for a mesoscopic high cycle fatigue criterion

Bosia

Constantinescu

2012

International Journal of Fatigue

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“…Table 7: Experimental fatigue data of 30NCD16 (f -1 = 690MPa, t -1 = 428MPa, f 0 = 1090MPa), from Froustey and Lasserr (1989). Table 8: Experimental fatigue data of "Acier doux" (f -1 = 235MPa, t -1 = 137MPa, f 0 = 342MPa), from Nishihara and Kawamoto (1945). Table 9: Experimental fatigue data of 34Cr4 (f -1 = 415MPa, t -1 = 259MPa, f0= 648MPa), from Heidenreich and Zenner (1979 The analysis of results obtained on the comparison between the experimental fatigue limit and the calculated ones obtained from Crossland and Sines fatigue criteria as presented in Figure 1 and Figure 2 showed clearly their poor predictions capacity for stress states presenting mobile principal stress directions; with majority of the error index out of an error interval of 10%.…”

Section: Fatigue Methods Of Assessmentmentioning

confidence: 99%

Fatigue Equivalent Stress State Approach Validation in Non-conservative Criteria: a Comparative Study

Tchoupou

Fotsing

2015

Lat. Am. j. solids struct.

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This paper is concerned with the fatigue prediction models for estimating the multiaxial fatigue limit. An equivalent loading approach with zero out-of-phase angles intended for fatigue limit evaluation under multiaxial loading is used. Based on experimental data found in literatures, the equivalent stress is validated in Crossland and Sines criteria and predictions compared to the predictions of existing multiaxial fatigue; results over 87 experimental items show that the equivalent stress approach is very efficient.

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“…An experimental dataset in bending-torsion provided from the literature [23,26,30] is used in this section in order to confront inquadrature results with the behavior predicted by the Liu & Mahadevan's criterion. Experimental dots lying above or on the curves correspond to conservative tests (D P 1) while dots lying below correspond to non-conservative tests (D < 1).…”

Section: Application and Confrontation With Experimental Datamentioning

confidence: 99%