Extended GLOSS Method for Determining Inelastic Effects in Mechanical Components and Structures: Isotropic Materials

2000 ◽  
Vol 122 (4) ◽  
pp. 413-420 ◽  
Author(s):  
R. Seshadri ◽  
S. Babu
Keyword(s):  
Stress Relaxation ◽  
Low Cycle Fatigue ◽  
Creep Damage ◽  
Local Region ◽  
Cycle Fatigue ◽  
Multiaxial Stress ◽  
Local Strains ◽  
Isotropic Materials ◽  
Elastic Plastic ◽  
Mechanical Components

The extended GLOSS method of analysis has been presented here that leads to conservative bounds on inelastic local strains. Consequently, the local region constraint parameter λ¯ is determined which can be used to evaluate multiaxial stress relaxation, creep damage, low-cycle fatigue, and elastic-plastic fracture. The method is used to determine inelastic local strains for several component configurations, subjected to mechanical as well as thermal loadings, and then compared with the corresponding inelastic FEA results. [S0094-9930(00)00404-2]

scholarly journals Effect of multiaxial stress on low cycle fatigue

2015 ◽  
Vol 2 (1) ◽  
pp. 14-00214-14-00214 ◽  
Author(s):  
Masao SAKANE ◽  
Takamoto ITOH ◽  
Hideyuki KANAYAMA
Keyword(s):  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Multiaxial Stress

On the Applicability of Neuber’s Rule for Low-Cycle Fatigue

2016 ◽  
Author(s):  
Daniel W. Spring ◽  
Edrissa Gassama ◽  
Aaron Stenta ◽  
Jeffrey Cochran ◽  
Charles Panzarella
Keyword(s):  
Low Cycle Fatigue ◽  
Kinematic Hardening ◽  
Cycle Fatigue ◽  
Hardening Model ◽  
Elastic Plastic ◽  
Sufficient Detail ◽  
Complex Models ◽  
Educational Perspective ◽  
Neuber's Rule ◽  
Nonlinear Hardening

Neuber’s rule is commonly applied in fatigue analysis to estimate the plasticity of purely elastic FEA results. In certain cases, this is more efficient than running elastic-plastic models. However, the applicability of Neuber’s rule is not well understood for complex models and may not always be appropriate. In this paper, the applicability of Neuber’s rule is investigated. The background of Neuber’s rule is discussed, theoretical limitations are derived, and algorithmic outlines of the procedures are presented. Neuber’s plasticity correction procedure is applied to both the Ramberg-Osgood elastic-plastic constitutive relation and the advanced Chaboche isotropic/kinematic nonlinear hardening relation. Throughout the manuscript, the aspects of each model are discussed from an educational perspective, highlighting each step of the implementation in sufficient detail for independent reproduction and verification. This level of detail is often absent from similar publications and, it is hoped, may lead to the wider dissemination of Neuber’s rule for plasticity correction. The final component of the paper presents a multiaxial correction of the Chaboche hardening model. To the best of the authors’ knowledge, this is the first published application of Neuber’s rule to the multiaxial plasticity correction of the Chaboche combined isotropic/kinematic hardening model. Examples are used to illustrate the behavior of the method and to present some of the commonly overlooked components when assessing the applicability of Neuber’s method.

Stress Relaxation on Biaxial Low Cycle Fatigue

2002 ◽  
Vol 404-407 ◽  
pp. 445-450
Author(s):  
Luís G. Reis ◽  
Bin Li ◽  
Manuel de Freitas
Keyword(s):  
Stress Relaxation ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue
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