• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.1; 20051026-28; Nanjing(CN) >On the Integration of Large Deformation Finite Element and Multibody System Algorithms
【24h】

On the Integration of Large Deformation Finite Element and Multibody System Algorithms

机译：大变形有限元与多体系统算法的集成

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 integration of small deformation finite element and multibody algorithms was successfully accomplished in the early eighties. This successful integration which is based on the finite element floating frame of reference formulation led to a new generation of multibody computer codes that are currently widely used in the analysis of flexible mechanical and aerospace systems. Currently, research and development efforts are being devoted to integrate large deformation finite element and flexible multibody algorithms in order to allow for the analysis and simulation of detailed system models that can not be solved using existing computer codes. One of the main difficulties encountered in this integration process is due to the fact that finite element and general purpose flexible multibody algorithms employ fundamentally different solution procedures. Finite element algorithms are based on the co-rotational solution approach that is often used with incremental procedures. Flexible multibody computer codes, on the other hand, use in general non-incremental solution procedure. Two approaches are currently being explored by academic institutions and software industry. In the first approach, gluing algorithms are proposed. These algorithms, however, lead to problems such as the use of different coordinates and synchronizing the time stepping. The other approach which is adopted by the author is to introduce a new large deformation finite element formulation that can be successfully implemented in flexible multibody system computer algorithms. This approach which is based on the finite element absolute nodal coordinate formulation can be systematically implemented in general purpose flexible multibody system computer algorithms that account for the coupling between the displacements of rigid, flexible and very flexible bodies. In this lecture, the implementation of the absolute nodal coordinate formulation in general purpose flexible multibody algorithms is discussed and the algorithms that are currently being used to develop new flexible multibody codes are presented.
机译：小变形有限元和多体算法的集成是在八十年代初期成功完成的。基于参考公式的有限元浮动框架的这种成功集成导致了新一代多体计算机代码，该代码目前广泛用于柔性机械和航空航天系统的分析中。当前，研究和开发工作正致力于整合大变形有限元和灵活的多体算法，以允许对无法使用现有计算机代码解决的详细系统模型进行分析和仿真。在此集成过程中遇到的主要困难之一是由于以下事实：有限元和通用柔性多体算法采用了根本不同的求解过程。有限元算法基于经常与增量过程一起使用的同旋转解方法。另一方面，灵活的多主体计算机代码用于一般的非增量解决方案过程。学术机构和软件行业目前正在探索两种方法。在第一种方法中，提出了粘合算法。然而，这些算法导致诸如使用不同坐标和同步时间步长的问题。作者采用的另一种方法是介绍一种可以在柔性多体系统计算机算法中成功实现的新的大变形有限元公式。这种基于有限元绝对节点坐标公式的方法可以在通用的柔性多体系统计算机算法中系统地实现，该算法考虑了刚性，柔性和非常柔性体的位移之间的耦合。在本讲座中，讨论了通用柔性多体算法中绝对节点坐标公式的实现，并介绍了当前用于开发新的柔性多体代码的算法。

著录项

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