...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Finite elements in analysis & design >The use of FEA packages in the simulation of a drawing operation with springback, in the presence of random uncertainty
【24h】

The use of FEA packages in the simulation of a drawing operation with springback, in the presence of random uncertainty

机译：在存在随机不确定性的情况下，在具有回弹力的拉伸操作模拟中使用FEA软件包

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The springback response on a stamped part, calculated by finite element analysis, has been evaluated taking into account the uncertainty of some process conditions. In fact, in the simulation of sheet metal forming and springback, a traditional deterministic approach is not able to take into account the uncertain physical variations related to material characteristics, friction conditions, tools active surfaces status, etc.rnDuring sheet metal forming operations many different sources of non-controllable process variations usually display their effect leading to a degree of uncertainty in the final parts' quality. For this reason, statistical tools and methods are increasingly being used in combination with FE numerical simulation. Then, if one of the purposes of process design is to study and model robustness or reliability of a given process in aleatory conditions, a CAE study might become a feasible way to do it.rnToday, the evaluation of the performances of a sheet metal stamping process, under uncertainty of the main variables, is possible using several commercial FEA packages. These software tools automatically allow the pre-emptive evaluation of the robustness of technological decisions and the process sensitivity to a random variation of uncontrollable parameters or conditions. For accurate calculations these innovative numerical approaches usually require a considerable amount of computational work both in terms of CPU time and in terms of number of CPUs. A specific experimental and numerical activity has been developed in order to better understand the technical capabilities in terms of process simulation in stochastic conditions.
机译：考虑到某些工艺条件的不确定性，对通过有限元分析计算出的冲压零件的回弹响应进行了评估。实际上，在钣金成形和回弹的模拟中，传统的确定性方法无法考虑与材料特性，摩擦条件，工具有效表面状态等相关的不确定物理变化。不可控制的过程变化的来源通常会显示其影响，从而导致最终零件质量的不确定性。因此，越来越多地将统计工具和方法与有限元数值模拟结合使用。然后，如果过程设计的目的之一是研究和模拟给定过程在给定条件下的鲁棒性或可靠性，那么CAE研究可能会成为可行的方法。当今，评估钣金冲压件的性能在一些主要变量不确定的情况下，可以使用几种商业有限元分析程序进行处理。这些软件工具自动允许对技术决策的鲁棒性和对不受控制的参数或条件的随机变化的过程敏感性进行先发制人的评估。为了进行精确的计算，这些创新的数值方法通常需要大量的计算工作，无论是在CPU时间方面还是在CPU数量方面。为了更好地理解随机条件下的过程仿真，已经开发了一种特定的实验和数字活动。

著录项

  • 来源
    《Finite elements in analysis & design》 |2010年第7期|p.527-534|共8页
  • 作者

    Antonio Del Prete; Teresa Primo; Matteo Strano;

  • 作者单位

    Universita di Lecce, Dip. Ing. Innovazione, via per Arnesano, 73100 Lecce, Italy;

    Universita di Lecce, Dip. Ing. Innovazione, via per Arnesano, 73100 Lecce, Italy;

    Politecnico di Milano, Dipartimento di Meccanica, via La Masa 1, 20156 Milano (MI), Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    uncertainty; deep drawing; springback; CAE;

    机译：不确定;拉深弹回;CAE;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号