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Some studies on temperature profiles in AISI 304 stainless steel sheet during laser beam welding using FE simulation |
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| Authors: | N Siva Shanmugam G Buvanashekaran K Sankaranarayanasamy K Manonmani |
| Affiliation: | 1. Research Scholar, Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, Tamil Nadu, India 2. Deputy General Manager, Welding Research Institute, BHEL, Tiruchirappalli, 620 014, Tamil Nadu, India 3. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, Tamil Nadu, India 4. Department of Mechanical Engineering, Government College of Technology, Coimbatore, 641 013, Tamil Nadu, India |
| Abstract: | The investigation of transient temperature profiles of a weld joint produced by the laser welding process is presented. A three-dimensional finite element model is developed using a commercial finite element code ANSYS in order to obtain the behavior of temperature field and molten pool shape during the welding process. A three-dimensional conical Gaussian heat source is employed as a heat source model for performing a non-linear transient thermal analysis. The temperature-dependent material properties of AISI 304 stainless steel sheet are taken into account, which has a great influence on the temperature fields indicated by the simulation results. The effect of latent heat and the convective and radiative boundary conditions are also included in the model. A series of laser welds are performed using a 2-kW continuous wave Nd:YAG laser welding system. The experimental trials are conducted by varying the laser input parameters namely beam power, welding speed, and beam incident angle to validate the model. The results show that there is a good agreement between the finite element simulation and the experimental observations. |
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