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| Abstract No.: |
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| Title: |
Numerical investigation of thermo-mechanical phenomena by different trajectories in thermal spray
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| Authors: |
Sihao Deng / LERMPS-UTBM, France
Chaoyue Chen / IRTES-LERMPS, France
Hanlin Liao*/ University Bourgogne Franche-Comté, France
Zhongming Ren/ State Key Laboratory of Advanced Special Steel, Shanghai University , China
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| Abstract: |
As an important factor in thermal spray process, robot trajectory can directly affect the coating thickness distribution, thermal distribution and stress distribution. In this work, it aims to study the effects of robot kinematics of different trajectory on temperature and stress distribution in thermal spray process by numerical simulation. The Archimedean spiral trajectory, round-trip trajectory as well as meander trajectory are considered as three different trajectories in this study. After the trajectory generation by offline programming method, they are simulated by the virtual robot system in RobotStudio. Based on the kinematic data by robot simulation, a 3D transient coating build-up model is established to simulate the coating thickness distribution and thermo-mechanical phenomena by different trajectories. The movement of heat source and transient coating growth are according to the nozzle movement by robot trajectory simulation results. The flatness of coating by different trajectories will be compared. Besides, the thermal history during coating build-up process as well as the residual stress distribution after cooling down are analyzed according to the numerical results.
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