Numerical Simulation of Ultrasonic Assisted Indentation Tube Forming
Publish place: International Journal of Advanced Design and Manufacturing Technology، Vol: 13، Issue: 3
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ADMTL-13-3_001
تاریخ نمایه سازی: 16 دی 1399
Abstract:
Indentation forming is an internal tube forming process in which a mandrel with a diameter slightly larger than that of the tube is pressed inside the tube and in so doing, creates the internal profile. Forming forces have a significant effect on the spring back, residual stress, quality of the inner surface, quality of tube dimensions, and tool wear. In this study, the forming process of CK45 steel tube by carbide tungsten tool in the presence of ultrasonic vibration has been simulated and the effect of ultrasonic on the forming mechanism has been investigated by introducing two regimes according to the forming conditions. The effects of tool feed-speed and amplitude of vibration on forming force reduction have been investigated. According to the simulation results, the main reason for the force reduction in the presence of longitudinal tube ultrasonic vibration is the intermittent phenomenon which is the continuous or impulsive regime. The critical amplitude which determines the borderline of continuous and impulsive regimes is obtained 38µm by the simulation of the process. The maximum force reduction obtained in continuous regime is 64.2% at the critical amplitude. The simulation results are consistent well with the previous experimental data.
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Authors
Saeid Dashti
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
Masih Paknejad
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
Amir Abdullah
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
Abbas Pak
Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran
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