Damage Prediction and Process Optimization of TC11 Titanium Alloy During Vibration Thermal Rotary Forging Based on Response Surface Method
In order to effectively avoid the material damage in the process of TC11 titanium alloy vibration thermal rotary forging and obtain the process parameters with the least damage to the rotary forging parts,TC11 titanium alloy cylindrical parts are taken as the research object,a finite element model of TC11 titanium alloy cylindrical parts based on Lemaitre fracture criterion is established,and the damage value of TC11 titanium alloy cylindrical parts is obtained through simulation,and the damage value of vibration thermal rotary forging is taken as the optimization goal.The response surface analysis method is used to establish a damage prediction model based on TC11 titanium alloy cylindrical parts,and the heating temperature,feed rate,vibration frequency and vibration amplitude during the forming process of the pendulum rolling are taken as the influencing factors,and the influence of each influencing factor on the damage value of the vibration thermal rotary forging is analyzed,and the experimental verification is carried out.The results show that the significant influence of each factor on the damage value of the rotary forging piece in descending order is:feed rate → heating temperature → vibration amplitude → vibration frequency.Through the optimal design of the response surface damage model,the optimal combination of vibration thermal rotary forging process parameters is obtained:heating temperature is906℃,feed speed is4mm/s,vibration frequency is49.1 Hz,and vibration amplitude is0.066 mm.
万方数据
维普
