A low-distortion mesh moving method based on fiber-reinforced hyperelasticity and optimized zero-stress state

Kenji Takizawa*, Tayfun E. Tezduyar, Reha Avsar

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

In computation of flow problems with moving boundaries and interfaces, including fluid–structure interaction, moving-mesh methods enable mesh-resolution control near the interface and consequently high-resolution representation of the boundary layers. Good moving-mesh methods require good mesh moving methods. We introduce a low-distortion mesh moving method based on fiber-reinforced hyperelasticity and optimized zero-stress state (ZSS). The method has been developed targeting isogeometric discretization but is also applicable to finite element discretization. With the large-deformation mechanics equations, we can expect to have a unique mesh associated with each step of the boundary or interface motion. With the fibers placed in multiple directions, we stiffen the element in those directions for the purpose of reducing the distortion during the mesh deformation. We optimize the ZSS by seeking orthogonality of the parametric directions, by mesh relaxation, and by making the ZSS time-dependent as needed. We present 2D and 3D test computations with isogeometric discretization. The computations show that the mesh moving method introduced performs well.

本文言語English
ページ(範囲)1567-1591
ページ数25
ジャーナルComputational Mechanics
65
6
DOI
出版ステータスPublished - 2020 6 1

ASJC Scopus subject areas

  • 計算力学
  • 海洋工学
  • 機械工学
  • 計算理論と計算数学
  • 計算数学
  • 応用数学

フィンガープリント

「A low-distortion mesh moving method based on fiber-reinforced hyperelasticity and optimized zero-stress state」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル