As to the carbon fiber reinforced plastics(CFRP),the drilling is prone to defects,the quality of the hole is difficult to guarantee and the efficiency is low.Based on Hashin criterion and PUCK criterion,the subprogram of constitutive model of carbon fiber reinforced plastics is constructed,and the three-dimensional solid finite element model of CFRP longi-tudinal torsional ultrasonic vibration assisted drilling is established.Compared with the change of thrust force in ordinary drilling process,and the influence of spindle speed,feed speed,frequency,amplitude,fiber layer angle and drill tip angle on the thrust force are analyzed.The results show that the thrust force increases with the increase of feed speed,frequency and drill tip angle,decreases with the increase of spindle speed,first decreases and then increases with the increase of ampli-tude,and first increases and then decreases with the increase of fiber lay angle.
关键词
碳纤维复合材料/纵扭超声振动钻削/有限元仿真/轴向力
Key words
CFRP/longitudinal-torsional ultrasonic assisted drilling/finite element/thrust force
维普
万方数据