An elastic-plastic analysis of railway wheel life prediction is made for obtaining the residual stresses due to braking and alternating rolling contact stresses between the wheel and rail.
(PDF) RESIDUAL STRESSES IN FRICTION STIR WELDING Furthermore, the method enables the residual stresses at the crack tip to be determined, which play an important role in fatigue crack growth. The performed analysis permitted to fully predict the residual stress distribution in the longitudinal, transverse and through-thickness directions.
Feb 01, 1999 · An advanced procedure has been developed to analyse the fatigue crack growth in the residual stress field. The method is based on an extension of the strip yield crack closure model for part-through crack problems. In this method, the residual stress relaxation due to both the fatigue loading and the crack growth is considered. It has been shown that the effect of the residual stress
Eect of Residual Stresses on the Stress Intensity Factor The residual stresses generated during the implementation of the composite material during the cooling process of the elaboration temperature to room tem-perature, are introduced into the ber, the matrix and the very close vicinity of their interface. We have made a numerical analysis
Evaluation of the Impact of Residual Stresses in Crack By performing this numerical simulation, the accuracy of the crack compliance method can be evaluated. On the other hand, elastic-plastic finite element analysis was utilized for the residual stress estimation. The numerical analysis was based on the mechanical properties of a
Numerical analysis, like employing finite element method (FEM), and experimental methods such as X-ray , crack-compliance method , and hole drilling [20,21,22] are commonly used for the research of residual stresses developed during the quenching operation for aluminum alloys. Specifically, X-ray diffraction is one of the widely used methods to determine residual stresses due to its reliability and
Numerical Analysis of Joule Heating Behavior and Under the Joule heating, the compressive stresses can be produced around the crack tip [1, 2]. This crack-tip compressive stress field is important to reduce or stop the potentialcrackgrowth.However,thepastreferencesdidnot show the time-history of the crack-tip stress. During the electricloading,unloading,andcoolingprocess,thecrack-
Numerical Evaluation of Advanced Laser Control Strategies Nov 30, 2020 · Finite element analysis is then used to evaluate residual stresses for the nine different laser scan control strategies, in order to identify the strategy which minimizes the residual stress magnitude. Numerical results show that a constant power density scan strategy appears the most effective to reduce residual stresses in the considered domain.
Request PDF Numerical analysis of retained residual stresses in C(T) specimen extracted from a multi-pass austenitic weld and their effect on crack growth Small scale fracture mechanics test
Numerical analysis of the effect of weld-induced residual workpiece . These post-weld tensile residual stresses frequently lead to the premature failure of a component, commonly via accelerated crack growth near the weld region [1, 2]. On the other hand, the introduction of compressive residual stresses (e.g. via shot peening) can be beneficial in
Numerical modeling of residual stresses and fatigue damage Jan 01, 2020 · To study the effects of the UIT on the residual stresses of weld joint, numerical analysis results of the weld process were saved and adopted as the initial state for the UIT simulation. The impact zone was modeled using refined meshes in the middle of the weld zone, as shown in Fig. 6. Because of the weld analysis sensitivity to the element size, the convergence study was performed to determine
Download PDF Download. Advanced. Engineering Fracture Mechanics. Volume 198, July 2018, Pages 65-78. Numerical analysis of residual stresses and crack closure during cyclic loading of a longitudinal gusset. Author links open overlay panel D. Tchuindjang a 1 W. Fricke b M. Vormwald c. Show more.