英语翻译3.2 Effect of the Blank-Holder ForceIt is well known tha

英语翻译
3.2 Effect of the Blank-Holder Force
It is well known that increasing the blank-holder force can
help to eliminate wrinkling in the stamping process.In order
to study the effectiveness of increased blank-holder force,the
stamping of a tapered square cup with die gap of 50 mm,
which is associated with severe wrinkling as stated above,was
simulated with different values of blank-holder force.The
blank-holder force was increased from 100 kN to 600 kN,
which yielded a blank-holder pressure of 0.33 MPa and 1.98
MPa,respectively.The remaining simulation conditions are
maintained the same as those specified in the previous section.
An intermediate blank-holder force of 300 kN was also used
in the simulation.
The simulation results show that an increase in the blankholder
force does not help to eliminate the wrinkling that
occurs at the draw wall.The \x06 values along the cross-section
M–N,as marked in Fig.4,are compared with one another for
the stamping processes with blank-holder force of 100 kN and
600 kN.The simulation results indicate that the \x06 values along
the cross-section M–N are almost identical in both cases.In
order to examine the difference of the wrinkle shape for the
two different blank-holder forces,five cross-sections of the
draw wall at different heights from the bottom to the line M–
N,as marked in Fig.4,are plotted in Fig.6 for both cases.
It is noted from Fig.6 that the waviness of the cross-sections
for both cases is similar.This indicates that the blank-holder
force does not affect the occurrence of wrinkling in the stamping
of a tapered square cup,because the formation of wrinkles
is mainly due to the large unsupported area at the draw wall
where large compressive transverse stresses exist.The blankholder
force has no influence on the instability mode of the
material between the punch head and the die cavity shoulder.

3.2效果的压边力
这是人所共知的增加压边力,可
有助于消除起皱,在冲压过程中.为了
学习的成效,增加了压边力,
冲压件的锥形方杯与模具间隙50毫米,
这与严重起皱正如以上所述,是
模拟不同价值观的压边力.该
压边力增加,从100千牛到600千牛,
它产生了一个空白-持有人的压力为0 .33M Pa和1 .98
MPa时,分别.其余仿真条件
保持相同指明在前面一节.
一个中间压边力300千牛还用
在模拟演习.
模拟结果表明,增加中压边
武力无助于消除起皱说
发生在提请墙.值沿断面
的M -氮,作为标记图.4 ,比较与互相
冲压工序与压边力为100千牛
600千牛.仿真结果表明,该值沿
断面的M - N的几乎相同,在这两种情况下.在
为了探讨差异的皱纹形状为
两种不同的压边力,五横截面的
借鉴墙在不同高度,从底部到线的M -
氮,作为标记图.4 ,绘制图.六,为这两种情况下.
人们注意到,从图.六日表示,波纹的横截面图
对于这两种情况下是相同的.这表明空白持有者
力量并不影响发生起皱冲压
一个锥形方杯,因为形成的皱纹
主要原因在于大型无依无靠的面积在提请墙
大型压缩横向应力存在.该压边
武力并没有影响,对不稳定模式的探讨
材料之间的冲头与模腔肩.