求助:在线等!!!急啊!!冲压模专业英语翻译

Question

5. Summary and Concluding Remarks
Two types of wrinkling occurring in stamping processes were investigated using finite-element analysis, and the causes for wrinkling were examined and the methods to eliminate such wrinkles were developed. The first type of wrinkling appears at the draw wall in the stamping of a tapered square cup. The occurrence of wrinkling is attributed to the large die gap, which is the difference between the side length of the die cavity opening and the side length of the punch head. The large die gap results in a large unsupported area of sheet metal when the metal is drawn into the die cavity and an unfavourable stretch between the punch head and die cavity shoulder. The large unsupported area of sheet metal is therefore prone to wrinkling. The finite-element simulations show that this type of wrinkling cannot be suppressed by increasing the blank-holder force. Another type of wrinkling investigated occurs in an actual stamping part that has a stepped rectangular geometry. It is found that wrinkling occurs at the draw wall above the step even though the die gap is not sufficiently large. The wrinkling is due to the uneven stretch between the punch head and the step edge, according to the finite-element analysis. Several attempts were made in the die design to eliminate the wrinkling, using finite-element simulations, and an optimum design in which the step was cut off is finally established. The modified die design for eliminating wrinkles was validated by the production of a defect-free production part. The good agreement between the simulation results and those observed in the drawn production part demonstrates the accuracy of the finite-element analysis, and the effectiveness of using finite-element simulations as a substitute for the expensive method of actual die try-outs is thereby confirmed.
Acknowledgements
The authors wish to thank the National Science Council of the Republic of China for the grant NSC-86–2212-E002–028 that made this project possible. They also wish to thank KYM for
providing the production part.

References
1. K. Yoshida, H. Hayashi, K. Miyauchi, Y. Yamato, K. Abe, M.Usuda, R. Ishida and Y. Oike,“The effects of mechanical properties of sheet metals on the growth and removing of buckles due to non-uniform stretching”, Scientific Papers, Institute of Physics and Chemistry Research, 68, pp.85–93, 1974.
2. T. X. Yu, W. Johnson and W. J. Stronge, “Stamping and spring-back of circular plates deformed in hemispherical dies”, International Journal of Mechanical Sciences, 26, pp.131–148, 1984.

Answer 1

5.概述和结论的评论
（本文）利用有限元分析，探究了压型过程中产生的两种皱纹；而且对皱纹的原因进行了试验；开发消除这种皱折的方法。第一种型的皱折，压制有锥度的方杯时，在周壁上出现的。出现的皱折是由于模具间隙大引起的；该间隙在模具腔口的侧面距离和冲头侧面距离之间有差别。当金属板被挤入模具腔时，模具间隙大导致金属板无支撑面积大，冲头和模具腔肩之间产生不良的拉伸。因为，金属板的无支撑面积大，就易于出现皱折。有限元的模拟表明，这种型的皱折不能用增加冲压夹具力的方法消除。探究了另一种皱折，产生在带台阶的矩形件上。发现，甚至间隙不够大，皱纹会产生在台阶上部周壁。根据有限元分析，这种皱折是由于冲头和台阶边缘之间拉伸不均所致。试图用有限元模拟，从模具设计上消除皱折，最后找到最佳设计是切去台阶。制出无瑕疵的工件，证实修改的模具设计可消除皱褶。模拟结果和生产工件之间很一致，证明有限元分析的精确性，有限元模拟的效果确认了，它可代替昂贵的“摸索试着做”的实际用的办法。
感谢：
1。作者们希望感谢中国国家科学协会，批准的NSC-86-2212-E002-028计划，使得该项目有了可能。也谢谢KYM提供的工件。
(以下参考文献，照抄，不必翻译）(此前，全翻译完，为什么不见了？现重译）

Answer 2

5. 概略和结束语 发生在使用有限元素分析，盖印的起皱纹的Two类型过程被调查了，并且起皱纹的起因被审查了，并且消灭这样皱痕的方法被开发了。 起皱纹的第一种类型出现于在盖印的凹道墙壁一个逐渐变细的方形的杯子。 发生起皱纹归因于大死空白，是在模子洞开头的旁边长度和拳打头之间的旁边长度的区别。 大在金属板一个大无支持的区域死空白结果，当金属被引入模子洞和不赞同的舒展在拳打头之间时并且死洞肩膀。 金属板因此大无支持的区域是有倾向的对起皱纹。 有限元素模仿表示，此种起皱纹不可能通过增加空白持有人力量压制。 被调查的另外一种起皱纹在有跨步的长方形几何的一个实际盖印的部分发生。 发现起皱纹发生在步之上的凹道墙壁，即使模子空白不是充分大的。 起皱纹归结于在拳打头和步边缘之间的参差不齐的舒展，根据有限元素分析。 使用有限元素模仿，几个尝试在模子设计被做了消灭起皱纹，并且步被切除的一个最宜的设计最后建立。 修改过的死消灭的皱痕设计由一个无瑕疵的生产零件的生产确认。 在拉长的生产和那些之间的利益协定观察的模仿结果分开展示有限元素分析的准确性，并且使用有限元素模仿的有效率，当昂贵的方法的一个替补实际死试用品从而被证实。
Acknowledgements
The作者希望感谢中华民国的全国科学委员会使这个项目成为可能的津贴NSC-86–2212-E002–028。 他们也希望感谢KYM为
providing生产零件。

References
1. K.吉田， H. Hayashi， K. Miyauchi， Y.大和， K. Abe， M.Usuda、R. Ishida和Y. Oike，金属板机械性能的“The作用对成长和去除扣由于不均匀的stretching”，物理科学论文、学院和化学研究， 68， pp.85–93 1974年。
2. T.X. Yu， W.约翰逊和W.J. Stronge，在半球的dies”扭屈的圆板材，机械科学， 26， pp.131–148国际定期刊物的“Stamping和春天1984年。

Answer 3

您的回答与他人重复了（一楼）