This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Estimation of Elastic-Plastic Behavior at Notches under Uniaxial Cyclic Loading
Technical Paper
2015-01-0554
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
An accurate prediction of elasto-plastic cyclic deformation becomes extremely important in design optimization. It also leads to more accurate fatigue life prediction and hence weight savings. In paper presents a two-stage notch root prediction method. This is based on a correction expression to Neuber's rule notch strain amplitude as the first stage, and a linear interpolation scheme as the second stage. The accuracy of this method is assessed by comparing the predicted results with the results obtained from elasto-plastic finite element analysis. Various types of steels with different yield strengths were used in this study. Notch deformation behavior under cyclic variable amplitude loading conditions was monitored for a double notched flat plate and a circumference notched round bar to cover plain stress and plain strain conditions. Elastic as well as elasto-plastic finite element analyses are performed. Notch strain amplitudes in addition to fatigue life predictions obtained using the proposed method are in a good agreement with the elasto-plastic finite element analysis when compared to predictions obtained using Neuber's rule.
Authors
Topic
Citation
Esmaael, R. and Fernandez, V., "Estimation of Elastic-Plastic Behavior at Notches under Uniaxial Cyclic Loading," SAE Technical Paper 2015-01-0554, 2015, https://doi.org/10.4271/2015-01-0554.Also In
References
- Zeng Z. and Fatemi A. Elasto-plastic stress and strain behavior at notch roots under monotonic and cyclic loading J. Strain Analysis 36 287 300 2001
- Maksimovic Stevan Fatigue life Analysis of aircraft structural components Scientific Technical Review LV 1 2005
- Neuber , H. Theory of stress concentration for shear-strained prismatical bodies with arbitrary non-linear stress-strain law Trans ASME, J. Appl. Mech. 1961 28 544 550
- Leis B. N. , Gowda C V. B. and Topper T. H. Some studies of the influence of localized and gross plasticity on the monotonic and cyclic concentration factors J. Test. Eval. 1 341 348 1973
- Conle A and Nowack H. Verification of a Neuber-based notch analysis by the companion specimen method Experimental Mech. 17 57 63 1977
- Dowling , N. , Brose , W. , and Wilson , W. Notched Member Fatigue Life Prediction by the Local Strain Approach Fatigue under Complex Loading: Analysis and Experiments Warrendale Society of Automotive Engineers, Inc. 1977 55 84 0-89883-006-0
- Glinka , G. Energy density approach to calculation of inelastic strain-stress near notches and cracks Engng Fracture Mechanics 1985 22 3 485 508
- Hoffmann , M. and Seeger , T. A generalized method for estimating multiaxial elastic-plastic notch stresses and strains, part 1: theory Trans. ASME, J. Engng. Mater. Technol. 1985 107 250 254
- Hoffmann , M. and Seeger , T. A generalized method for estimating multiaxial elastic-plastic notch stresses and strains, part 2: application and general discussion Trans. ASME, J. Engn. Mater. Technol. 1985 107 255 260
- Hoffmann M. and Seeger , T. Estimating multiaxial elastic-plastic notch stresses and strains in combined loading, Biaxial and Mechanical Fatigue,1989 Mechanical Engineering Publications London 3 24
- Gowhari-Anaraki , A. R. and Hardy , S. J. Low cycle fatigue life prediction for hollow tubes with axially loaded axisymmetric internal projections J. strain Analysis 1991 26 2 133 146
- Lee , Y. L. , Chiang , Y. J. and Wong , H. H. A constitutive model for estimating multiaxial notch strains Trans. ASME, J. Engng Mater. Technol. 1995 117 33 40
- Sharpe Jr , W. N. and Wang , K. C. evaluation of a modified monotonic Neuber relation Trans. ASME, J. Engng Mater. Technol. 1991 113 1 8
- Sharpe Jr , W. N. , Yang , C. H. and Tregoning , R. L. An evaluation of the Neuber and Glinka relations for monotonic loading Trans. ASME, J. Appl. Mech. 1992 59 s50 s56
- Sharpe Jr , W. N. ASME 1993 Nadai lecture-elasticplastic stress and strain concentrations Trans, ASME, J. Engng Mater. Technol. 1995 117 1 7
- Tashkinov , A. V. and Filatov , V. M. Improved energy density method for inelastic notch tip strain calculation and its application for pressure vessel and piping design Int. J. Pressure Vessels Piping 1993 53 183 194
- James , M. N. , Dimitrious , C. and Chandler , H. D. Low cycle fatigue lives of notched components Fatigue Fracture Engng Mater. Struct. 1989 12 3 213 225
- Buczynski A. and Glinka G. Elastic-plastic stress-strain analysis of notches under non-proportional loading Biaxial/Multiaxial Fatigue and Fracture 1995 Cracow, Poland
- Samuelsson , L. The supper-Neuber technique for correction on linear elastic FE results Cong. Of aeronautical sciences 2008 26
- Tanweer H. , Mujeebuddin M. , Zeesh A. Prediction of elastic-plastic behaviour of structures at notches J. Engng. Technol. 31 2012 3
- Calladine , C. R. Rapid method for estimating the greatest stress in a structure subjected to creep Proceedings of 1. Mechanical E. 178 198 206 1963