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(PDF) Residual Stresses in Orthogonal Cutting of Metals

It is shown that a substantial level of tensile residual stresses can be obtained in the vicinity of the machined surface without any contribution of thermal effects. This motivates the development of a parametric study to analyse the effects of the thermomechanical coupling parameters on residual stresses. A Comparison Between Measured and Modeled Residual Jan 05, 2010 · An axisymmetric thermomechanical finite element model has been used to predict the resulting residual hoop and axial stresses in the welded pipe. The effects of the austenite to martensite phase transformation have been incorporated into the simulation. A Parametric Study of Residual Stresses in Multi-Pass Butt-Welded Stainless Steel Pipes

A Coupled Thermomechanical Modeling Method for

Jun 10, 2019 · A 2D coupled thermomechanical model is established to simulate the grinding process for temperature fields and grinding residual stress fields. In addition, verification tests are conducted to validate the model. It turns out that the coupled model can accurately predict the multiphysical fields on both temperature and residual stress. Modeling Residual Stresses in Superduplex Stainless Steel A parametric nonlinear elastoplastic model based on finite element method is used for the evaluation of residual stress in superduplex steel welding. The developed model takes into account the coupling between mechanical and thermal fields and the temperature dependency of the thermomechanical Parametric finite element analysis of stress evolution The orthogonal stress evolution of the weld is given in this paper. The relationship between the calculated residual stresses of the weld and the process parameters such as the tool traverse and rotational speeds, and the fixture release are investigated and presented.

Parametric investigation of autofrettage process in thick

In this paper, the effect of autofrettage process parameters on the ultimate pressure that functionally graded spherical vessel can tolerate are investigated. FGM properties and autofrettage pressure are considered as important parameters. Assumptions are variation of properties of FGM in radial direction, the residual stress in the absence of Bauschinger effect with the operation of variable Residual Stress Analysis of an Orthotropic Composite surrounded by orthotropic matrix, is conducted via numerical parametric studies for examining its residual stress under thermal cycles. The matrix is assumed to be elastically and plastically orthotropic, and all of its material properties are temperature-dependent (TD). Residual Stress Fields due to Varying Tack Welds In the present analysis, parametric studies are conducted for the eects of a critical geometric parameter, that is, tack weld on the corresponding residual

Thermomechanical modeling and optimization of friction

steel was replicated using ANSYS. The developed model was then used to conduct parametric studies to understand the effect of various input parameters like total rate of heat input, welding speed and clamping location on temperature distribution and residual stress in the workpiece.A parametric study of thermal and residual stress fields between the numerical and experimental results because of initial residual stresses produced by pre-heat treatment. Malik et al. [9] discussed the effect of welding speed on residual stresses. This study proves that a lower welding speed leads to a greater heat input. Consequently, the residual stresses increase because the FZ and HAZ become wider.