英语翻译Abstract Currently,more and more tailor-welded blanks(TW

英语翻译
Abstract Currently,more and more tailor-welded blanks
(TWBs) are used in the automobile industry.It is very
important to locate the weld line and predict its movement
during the forming process.The initial weld line can be
predicted by one-step finite-element analysis according to
the desired weld line in the final workpiece.Meanwhile,
weld line movement during the deformation process can be
evaluated in advance.In this paper,the procedures of finiteelement
analysis of one-step FEM with TWBs are
established.The contact between tool and blank and the
effect of restraining forces under the blankholder due to
drawbead and blankholder pressure are considered as well.
Forming limit diagram (FLD) is used to show not only the
tendency of reduction in thickness and fracture but also of
increase in thickness and wrinkle.Hydraulic controlled
pads used to clamp the weld line during the deep drawing
process are simplified as static external force to eliminate
the movement of the weld line.In order to speed up and
ensure the convergence of Newton-Raphson iterations,
energy-based 3D mesh mapping algorithm is introduced
to obtain the initial solution.The above-mentioned methods
have been implemented in the authors’ in-house one-step
FEM code InverStamp.A rectangular cup drawing case
demonstrates that this approach can be easily implemented

摘要目前,越来越多的拼焊毛坯
（ twbs ）是用在汽车工业.这是很
重要的位置,焊接线,并预测其动向
在形成的过程.最初的焊接线,可
预言一步有限元分析,根据
理想的熔接线在最后工件.与此同时,
熔接线运动中的变形过程,可
评估具有超前性.在这个文件中,程序的有限元
分析的一个步骤,有限元方法是twbs
成立.之间的联系工具和空白和
效力的约束力量下压边因
筋和压边的压力,被视为好.
成形极限图（成形极限图） ,是用来显示不仅
趋向减少,厚度和断裂,而且
增加厚度和皱纹.液压控制
垫用钳焊路线进行了拉深
过程简化为静态的外部力量,以消除
该运动的熔接线.为了加快和
确保收敛的牛顿迭代迭代
基于能量的三维网格映射算法介绍
获得初步的解决办法.上面提到的方法
已实施的作者,在内部单步
有限元程序inverstamp .一个长方形杯绘画案例
表明,这种方法可以很容易地实施
呃.大概