Multi-objective cyclic plastic modelling of cyclic hardening and softening characteristics of nuclear piping SA333 gr. 6 carbon steel

被引：5

作者：

Das, P. ^{[1
]}

Khutia, N. ^{[2
]}

Dey, P. P. ^{[3
]}

Arora, Punit ^{[4
,5
]}

Gupta, Suneel. K. ^{[4
,5
]}

机构：

[1] Cooch Behar Govt Engn Coll, Mech Engn Dept, Cooch Behar 736170, India

[2] IIEST, Aerosp Engn & Appl Mech Dept, Howrah 711103, India

[3] IIEST, Mech Engn Dept, Howrah 711103, India

[4] Bhabha Atom Res Ctr BARC, Reactor Safety Div, Mumbai 400085, India

[5] Homi Bhabha Natl Inst HBNI, Dept Engn Sci, Mumbai, Maharashtra, India

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2024年 / 180卷

关键词：

Yield surface; Isotropic hardening; Kinematic hardening; Cyclic hardening and/or softening; Low Cycle Fatigue; MEAN STRESS-RELAXATION; CONSTITUTIVE MODEL; STAINLESS-STEEL; BEHAVIOR; FATIGUE; LCF; SIMULATION;

D O I：

10.1016/j.ijfatigue.2023.108082

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The cyclic hardening/softening behaviour of C-Mn piping material has been studied in detail. The material exhibits cyclic hardening-hardening-hardening (H-H-H) at higher strain ranges, softening-softening-hardening (S-S-H) at lower strain ranges. Quantitative investigations of isotropic transformations show strain range dependent variation of cyclic yield strength. Higher translations of centre of yield surface have been observed at higher strain ranges. Present work has explored cyclic hardening/softening primarily due to variation of isotropic softening. The material exhibits additional hardening under multistep asymmetric strain cycling. New multi -objective plasticity model has been developed, results in excellent prediction of cycle-cycle behaviour, H-H-H, S-S-H, additional hardening till failure.

引用

页数：12

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