Determination of Residual Stress and Effects in Thick-Section Weldments for Hydraulic Structures. thermal results obtained by numerical simulations are in
require determination of the maximum combined stresses in which the complete stress state must be either measured or calculated. Normal Stress:Having derived the proportionality relation for strain, x, in the x-direction, the variation of stress, x, in the x-direction can be found by substituting for in Eqs. 3.3 or 3.7. In the DETERMINATION AND MODELING OF RESIDUAL diffraction have been commonly used for residual stress determination of WC-Co [9-14]. In these studies, measurements were accomplished on the surface and for homogeneous WC-Co with constant mechanical properties throughout the material volume. Larsson and Oden  determined the residual stress state as a function of depth
This, in turn, could lead to unnecessary conservatism in safety assessments. To explore this conjecture, the results of numerical modelling and neutron diffraction measurements of residual stresses in fracture specimens extracted from two different welded parent Determination of Residual Stress Distributions in numerical models. These initial models used a simplistic bi-linear stress-strain material representation; this deficiency was then addressed through the development of two means of creating radial position dependent non-linear material behaviour within FE, crucial for accurate prediction of residual stresses.
Determination of Residual Stresses Numerically Obtained in ASTM AH36 Steel Welded by TIG Process By Pablo Batista Guimarães, Paulo Marcelo Almeida Pedrosa, Yogendra Prasad Yadava, José Maria Andrade Barbosa, Aníbal Veras Determination of Residual Stresses Numerically Obtained in Determination of Residual Stresses Numerically Obtained in ASTM AH36 Steel Welded by TIG Process By Pablo Batista Guimarães, Paulo Marcelo Almeida Pedrosa, Yogendra Prasad Yadava, José Maria Andrade Barbosa, Aníbal Veras
The viscoelastic boundary element method is employed to investigate the behavior of interface stresses. The order of the singularity is obtained numerically for a given viscoelastic model. The numerical results exhibit the relaxation of interface stresses and large stress gradients are observed in the vicinity of the free surface. Determination of optimal residual stress profiles for 2.2 Determination of an optimal residual stress Of course, if residual stresses are present at the macroscopic scale, the stress history : ; at each specific depth has to be modified accordingly. In components with superimposed residual stresses due to heat treatment, the radial component of these stresses is practically
Determination of the Residual Stress for Single and Double Autofrettage of Thick-walled FG Cylinders Subjected to Dynamic Loading S.H. Razi Mousavi*, M. Mahzoon, M.H. Kadivar School of Mechanical Engineering, Shiraz university, Shiraz, Iran. Abstract:In the present article, a numerical procedure is developed for dynamic analysis of single Experimental determination of the interface residual Dec 15, 2020 · By substituting xx and yy into Eq. (1), the corresponding residual stresses can be obtained. From Eq. (4), it can be seen that the displacement measurement sensitivity of the GPA method is one pixel.
way the residual stresses can be obtained from the hole edge until the image border. The A, B and C coefficients can be obtained by different ways:experimental, analytical and numerical determination. The experimental methods are most accurate ones, however are time . 4 consuming when compared with analytical and numerical methods, more Numerical Determination of the Circumferential Residual Residual stress is very important for the study of cardiovascular-relevant issues, such as assessing the vulnerability of atherosclerosis and aneurysm. In this paper, the circumferential residual stress of porcine aorta was characterized by combining ex vivo experiments with numerical studies. In the experiments, porcine aortic rings were prepared and cut open, and
components of residual strain and stress, the values obtained from both paths were similar. In this study, the results shown correspond to the second path. Then, from the 6 sequences mentioned, 9 values for each component of residual strain and stress were obtained. Finally, the values evaluated in this study correspond to the mean values. Residual Stress Determination Using Strain Gage A strain gage technique, which relates the prior residual stress state in a material to the strain data obtained by fixing a strain gage on one surface and grinding off the other, has been proposed previously. In the current work, a generalized solution for obtaining an arbitray residual stress profile from strain gage data is presented.
Residual stresses have been numerically determined in welded joints. In this study, the numerical model is based on the coupling of different physical phenomena considering the thermal, mechanical and metallurgical nature of a welding process.