摘要
以阶梯形件为研究对象,使用eta/DYNAFORM5.7.3,模拟了零件充液拉深工艺成形过程,获得了工艺中液压力大小与成形件最小壁厚的关系,并且探讨了产生这种结果的主要原因。然后根据恒液压力充液拉深数值模拟的结果,设定了4种变液压力加载模式。经过优化,最后确定了一种较好的变液压力加载模式。模拟结果表明,在室温条件下,初始液压力(凸模与坯料接触时的液压力)为5MPa,按照某模式加载到20MPa后,保持不变,可以得到最小壁厚为0.308 mm的成形件。
Taking a stepped geometries part as a research object, the hydro-mechanical deep drawing process was simulated with the eta/DYNAFORMS.7.3. And the relationship between hydraulic pressure and the minimum thickness of parts was obtained and its main causes were explored. Then, according to the results of hydro-mechanical deep drawing numerical simulation with constant hydraulic pressure, four kinds of variable hydraulic pressure loading modes were set. Finally, an optimal hydraulic pressure loading curve was contbrmed through the finite element simulation. The simulation results show that under condition of room temperature, parts with the minimum thickness of 0.308 mm can be formed when the hydraulic pressure in a manner increases from 5 MPa to 20 MPa hereafter it hold immovability.
出处
《热加工工艺》
CSCD
北大核心
2013年第1期124-126,129,共4页
Hot Working Technology
关键词
阶梯形件
充液拉深
数值模拟
液压力
加载模式
stepped geometries part
hydromechanical deep drawing
numerical simulation
hydraulic pressure
loading modes
