毕业设计外文翻译 朱艳岭 学号201033175毕业设计外文翻译 朱艳岭 学号201033175.docxVIP

郑州科技学院本科毕业设计(外文翻译)题目 _单级蜗轮蜗杆齿轮减速器的CAE技术姓名_______朱艳岭_____________专业__机械设计制造及其自动化_______学号_____ 201033175 _ ______ 指导教师_郭瑞杰______________ 郑州科技学院机械工程学院二零一四年五月Predicting spring back in sheet metal forming:an explicit to implicit sequential solution procedure预测回弹成形板材：明确以隐式连续求解过程Abstract摘要The spring back properties of sheet metals make the design of forming dies extremely difficult. In this work a coupled explicit to implicit finite element procedure is outlined for predicting spring back deformations in sheet metal forming processes. The explicit method is initially utilized to analyze the contact based forming operation of a production stamping process. Then, an implicit solution is performed to simulate the spring back that develops in a blank after the forming pressure has been removed. Using this simultaneous solution technique on an actual automotive component, numerically predicted spring back deformations are found to be within 1% of production values .The results of the numerical investigation indicate that the coupled finite element procedure described herein can be utilized to significantly reduce the number of die prototype designs that are currently required in sheet metal stamping operations. ( 1999 Elsevier Science B.V. All rights reserved)金属板的回弹性能使成型模具的设计非常困难。在这项工作中耦合显式隐式有限元程序概述预测回弹板料成形过程的变形。显式方法最初用于分析的础上形成的生产冲压工艺操作的接触。然后隐溶液中进行，以模拟在一个空白发展形成压力已经被移除之后的回弹。在实际的汽车零部件采用这种联立求解方法，数值预测回弹变形被认为是内生产值1％。该数值研究的结果表明本文所述的耦合的有限元程序可以被用来显著降低，目前需要在板材冲压操作模原型设计的数目。（1999 Elsevier科学B.V.保留所有权利）1.Introduction1.介绍Sheet metal stamping processes play a major role in many industries including automotive component production. The dimensional accuracy of a stamped part is a critical factor in these industries because it often determines a customers impression of overall product quality. In addition, the integrity of stamped parts is crucial for minimizing assembly problems and improving final product performance. The widespread use of sheet metal forming in the industrial mark