Jun 04, 2019 · Residual stress were measured at the indentations center by means of X-ray and neutron diffraction up to a depth of 5 mm. Residual stress at the surface were respectively 200 and 400 MPa along the transverse ( Y) and longitudinal ( X) direction. FINITE ELEMENT ANALYSIS OF RESIDUAL STRESS FINITE ELEMENT ANALYSIS OF RESIDUAL STRESS GENERATION DURING SPOT WELDING AND ITS AFFECT ON FATIGUE BEHAVIOR OF SPOT WELDED JOINT A Dissertation Presented to The Faculty of the Graduate School University of Missouri- Columbia In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy By XIN LONG
Oct 07, 2017 · The influence of preheating source on mechanical properties and welding residual stress characteristics has been investigated through mechanical test and numerical analysis. The ultimate tensile strength of HFSWelded joints is approximately 103% of base metal tensile strength which is higher than that of FSWelded joints. Investigation on narrow-gap welding residual stresses in Jan 26, 2018 · Experiment and numerical simulation are the important methods to investigate the welding stress and its related phenomena. Experiments are essential because they provide the directly data about the welding residual stress and also provide sufficient information to verify the numerical simulation model. Modelling of residual stresses in a narrow-gap welding of Jun 01, 2018 · Jiang et al. (2017) studied the through-thickness distributions of the welding residual stress in the range of 50 mm100 mm thick plates by using 2D models and the ND measurement, and they found both the heat input and plate thickness have little influence on the residual stress distribution due to the relatively large constraints of the thick specimen applied to each welding pass.
May 25, 2020 · Other factors influencing the temperature and residual stress profiles during the multi-pass welding are the welding speed, welding pool geometry, sequence and direction of the weld, mechanical and thermal boundary conditions , etc. Experimental analysis of the factors mentioned above can only provide a quantitative estimation of the required outcome, which is time consuming, costly, Numerical Simulation of Weld Metal by Ultra-Narrow Gap Using the calculation to the thickness of 32mm, an example to simulate the magnitude and distribution of the residual stress in welding joint is given. Research shows that it is an effective analysis method to heat process and mechanic behavior in the welding by using finite element method numerical simulation and few experiments. Numerical modeling of residual stresses and fatigue damage Jan 01, 2020 · examined the residual stresses of UIT-treated S460M welded joints. The authors reported the depth of compressive residual stresses in the range of 12 mm. Leitner et al. performed numerical analysis to evaluate the influence of the UIT process on the weld residual stresses. The simulation results revealed that residual stresses with the maximum value of 330 MPa at the depth
Oct 01, 2006 · Hansen , simulated the welding of a frame box and performed a linear elastic fracture mechanics (LEFM) analysis where the welding residual stresses were included as a fixed mean stress. The residual stresses were found to be beneficial for this case. 6th International Seminar on the Numerical Analysis of Weldability, Graz-Seggau, Institute Numerical simulation of multi-repaired weld residual stressWelding residual stresses in 0Cr18Ni9/20 and 1Cr5Mo/20 dissimilar metal welded joints were simulated and analyzed with the finite element ABAQUS based on the succession coupling thermal stress Numerical Analysis of Welding Residual Stresses for This paper presents a numerical procedure to investigate the residual stress of structure joined by multi-pass FCA welding so that it can be incorporated into the fatigue strength assessment considering the effect of welding residual stress. The residual stress distribution is also measured by X-Ray diffraction method. The residual stress obtained by the computational model also has been