Transient three‐dimensional domain decomposition problems: Frame‐indifferent mortar constraints and conserving integration
Transient three‐dimensional domain decomposition problems: Frame‐indifferent mortar constraints and conserving integration
复制标题
瞬态三维域分解问题：框架无关迫击炮约束和守恒积分
DOI：
10.1002/nme.2767
复制
发表时间：
2010
影响因子：
2.9
通讯作者：
P. Betsch
中科院分区：
文献类型：
--
作者：
C. Hesch;P. Betsch
目前的工作涉及瞬态大变形域分解问题。异种网格的绑扎采用砂浆法进行。在这方面，提出了原始线性迫击炮约束的重新表述，它保留了界面任意离散化的框架无关性。此外，还提出了一种特定的坐标增强技术，使能量动量方案的设计成为可能。数值例子证明了新开发的针对三维问题的能量动量方案的鲁棒性和增强的数值稳定性。版权所有 © 2009 约翰·威利父子有限公司
The present work deals with transient large‐deformation domain decomposition problems. The tying of dissimilar meshed grids is performed by applying the mortar method. In this connection, a reformulation of the original linear mortar constraints is proposed, which retains frame‐indifference for arbitrary discretizations of the interface. Furthermore, a specific coordinate augmentation technique is proposed to make possible the design of an energy–momentum scheme. Numerical examples demonstrate the robustness and enhanced numerical stability of the newly developed energy–momentum scheme for three‐dimensional problems. Copyright © 2009 John Wiley & Sons, Ltd.