超声振动拉丝的有限元模拟研究

超声振动拉丝可以解决难拉拔材料和细微丝的拉拔问题.然而,由于超声振动拉丝的高速度,按照传统的实验方法,很难解决超声振动拉丝机理的进一步分析和理解.因此,尝试采用有限元方法对超声振动拉丝过程进行仿真.从机理上研究超声振动对拉丝过程的作用效果及影响,分析有关超声拉丝的规律及结论.仿真过程采用ANSYS有限元分析软件.结果表明,超声拉丝使变形更加均匀,更有利于发挥材料的塑性;在相同拉丝速度下,应力和拉拔力都有很大程度减小.可见,超声波拉丝可以提高生产效率、并降低成本.研究成果及结论可使超声拉丝理论更加完善.

Simulating wire drawing with ultrasonic vibration using the finite element method

Ultrasonic vibration is expected to allow the drawing of wires from materials which are difficult to be drawn and to aid the drawing of ultrafine wires.However,because ultrasonic-vibration drawing is done at high speeds,it is difficult to analyze and understand the mechanisms involved using conventional experimental methods.Therefore,we simulated the process of wire drawing using the finite element method(FEM) to reveal the effects of ultrasonic vibration.The simulation was performed with ANSYS software.From this data we were able to derive rules and make conclusions about the effects of ultrasonic vibration.The FEM analysis shows that wire-drawing with ultrasonic vibration generates more uniform deformation and strain,bringing the plasticity of the material into full play.Stresses and drawing force are reduced substantially compared with wires drawn at the same velocity without ultrasonic vibration.It is obvious that ultrasonic wire-drawing can improve production efficiency and reduce costs.The results and conclusions of this research should increase understanding of ultrasonic wire drawing.