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Incremental Multiaxial Neuber Correction for Fatigue Analysis
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English
Abstract
Estimations of the elastic-plastic stress states at notches from elastic finite element results based on Neuber type of correction method have proven very useful for many engineering problems. While this approximation technique has been regularly used in simple fatigue analysis of components subjected to predominantly uniaxial loading, its extension into multiaxial cases has been limited to monotonic loading. This paper presents a technique which integrates the Neuber type of correction method with a three-dimensional cyclic stress-strain model. Three major elements are involved: 1) an assumed elastic-plastic loading path; 2) a one-to-one relationship between the given elastic and the corrected elastic-plastic loading history; and 3) a plasticity model for multiaxial cyclic stress-strain analysis. The technique is then illustrated to be capable of estimating complex yet stable cyclic stress and strain histories at a notch.
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Citation
Chu, C., "Incremental Multiaxial Neuber Correction for Fatigue Analysis," SAE Technical Paper 950705, 1995, https://doi.org/10.4271/950705.Also In
References
- Neuber, H. “Theory of Stress Concentration for Shear Strained Prismatical Bodies with Arbitrary Nonlinear Stress-Strain law,” J. Appl. Mech. 1961 544
- Glinka, G. “Energy Density Approach to Calculation of Inelastic Stress-Strain Near Notches and Cracks,” Engineering Frac. Mech. 22 3 1985 485
- Peterson, R.E. “Stress Concentration Factors” John Wiley & Sons N.Y. 1974
- Conle, F.A. Mousseau, C.W. “Using Vehicle Dynamics Simulations and Finite Element Results to Generate Fatigue Life Contours for Chassis Components,” Int. J. Fatigue 13 3 1991 195
- Hoffman, M. Seeger, T. “A Generalized Method for Estimating Multiaxial Elastic-Plastic Notch Stresses and Strains, Part 1 and 2,” J. Engrg. Matls. and Tech., Trans. ASME 107 1985
- Tipton, S.M. Nelson, D.V. “Methods for Estimating Cyclic Notch Strains in the SAE Specimen,” Multiaxial Fatigue: Analysis and Experiments, SAE AE-H 1989 101
- Barkey, M.E. Socie, D.F. Hsai, K.J. “A Yield Surface Approach to the Estimation of Notch Strains for Proportional and Non-proportional Cyclic Loading,” TAM Rep. 709 U. of Illinois Urbana, Illinois 1993
- Chu, C.-C. Conle, F.A. “Multiaxial Neuber-Type of Elastic to Elastic-Plastic Stress-Strain Correction,” Proceedings of the 4th Int. Conf. on Biaxial/Multiaxial Fatigue Paris, France 1994
- Chu, C.-C. “A Three Dimensional Model of Anisotropic Hardening in Metals and its Applications to the Analysis of Sheet Metal Formability,” J. Mech. Phys. Solids 32 1984 197
- Mròz, Z. “On the Description of Anisotropic Workhardening,” J. Mech. Phys. Solids 15 1967 163