Finite element analysis on temperature field and residual stress of welding assembly for I-beam and end-plate

【摘要】 Based on full scale model of I-beam and end-plate welding assembly with medium,plate,welding temperature field and residual stress were simulated,infrared thermometers were employed to measure the real-time temperature for verification purposes.Results show that the measured thermal cycle curves match well with the simulation result.Simulation results of welding residual stress indicate that the values of longitudinal and transverse stress on the upper surface of the plate are higher than the normal stress;higher tensile stresses exist at the end of the web weld toes and in the central area of the flange weld toes.The dangerous zones are located at the central areas of weld toes of the flange welds and near weld toes of the web welds.更多还原

【Abstract】 Based on full scale model of I-beam and end-plate welding assembly with medium,plate,welding temperature field and residual stress were simulated,infrared thermometers were employed to measure the real-time temperature for verification purposes.Results show that the measured thermal cycle curves match well with the simulation result.Simulation results of welding residual stress indicate that the values of longitudinal and transverse stress on the upper surface of the plate are higher than the normal stress;higher tensile stresses exist at the end of the web weld toes and in the central area of the flange weld toes.The dangerous zones are located at the central areas of weld toes of the flange welds and near weld toes of the web welds.更多还原