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Coupling of heterogeneous kinematics and Finite Element approximations applied to composite beam structures

机译:异质运动学与有限元近似的耦合应用于复合梁结构

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摘要

In the framework of the modeling of composite beam structures, the eXtended Variational Formulation (XVF) is carried out to couple different kinematics. The purpose is to take advantages of efficient models and reduce the overall computational cost without loss of local precision. In this way, the structure is divided into non-overlapping domains with different kinematics. Local domains of interest are described with advanced models, such as refined Sinus model, to precisely describe local behavior, while the remaining global domain uses simple classical models. Each of the kinematics needs a suitable Finite Element (FE) approximation, therefore the coupling of different FE approximations is also addressed. The present approach is assessed on homogeneous and sandwich structures. It is compared with classical Multiple Point Constraints vias penalty. The study has shown the need of the introduction of a new operator for the layered structures. The results are very promising.
机译:在复合梁结构建模的框架中,进行了扩展变分公式化(XVF)以耦合不同的运动学。目的是利用有效模型的优势,并在不损失局部精度的情况下降低总体计算成本。以此方式,将结构划分为具有不同运动学的非重叠域。感兴趣的本地域使用高级模型(例如精制的Sinus模型)进行描述,以精确描述本地行为,而其余全局域则使用简单的经典模型。每个运动学都需要一个合适的有限元(FE)近似值,因此也解决了不同FE近似值的耦合问题。本方法是在均质和三明治结构上进行评估的。将其与经典的多点约束过孔惩罚进行比较。研究表明,需要为分层结构引入新的运算符。结果是非常有希望的。

著录项

  • 来源
    《Composite Structures》 |2014年第sepaaocta期|177-192|共16页
  • 作者单位

    Laboratoire Energetique Mecanique Electromagnetisme EA4416, Universit Paris Ouest - Nanterre La Defense, 50, rue de Sevres, 92410 Ville d'Avray, France;

    Laboratoire Energetique Mecanique Electromagnetisme EA4416, Universit Paris Ouest - Nanterre La Defense, 50, rue de Sevres, 92410 Ville d'Avray, France;

    Laboratoire Energetique Mecanique Electromagnetisme EA4416, Universit Paris Ouest - Nanterre La Defense, 50, rue de Sevres, 92410 Ville d'Avray, France;

    Laboratoire Energetique Mecanique Electromagnetisme EA4416, Universit Paris Ouest - Nanterre La Defense, 50, rue de Sevres, 92410 Ville d'Avray, France;

  • 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

    Incompatible kinematics; eXtended Variational Formulation; Kinematical refinement; Global local studies; Composite/sandwich;

    机译:运动学不兼容;扩展的变体配方;运动学上的细化;全球本地研究;复合材料/三明治;

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