文档介绍：节选-ABAQUS帮助文档翻译 reference to: user manual
2008-10-10 12:59
理解自适应网格(adaptive meshing) 自适应网格可以通过移动独立的材料网格(allowing the mesh to move independently of the material),让你在整个分析过程中即使发生大变形,也能保持高质量的网格。通常自适应网格只移动节点,网格的拓扑并不改变。注意:通常自适应网格多用在Dynamic(动态分析),Explicit and Dynamic(显示动态分析), Temp-disp, Explicit 中。定义模型中某个区域采用自适应网格的设置:other-->Adaptive Mesh Domain 自适应网格的选项控制设置:Other--〉Adaptive Mesh Controls 通常,在每一个step中只能有一个自适应网格区域。 ABAQUS/Standard defines contact between two bodies in terms of two surfaces that may interact; these surfaces are called a “contact pair.”ABAQUS/Standard defines “self-contact,” which is available only in two-dimensional analysis, in terms of a single surface. [if gte vml 1]> <![endif][if !vml][endif]Figure –1 Contact and interaction discretization. 从the first surface (the “slave” surface)的节点向 the second surface (the “master” surface)做垂线,寻找最近的垂线的垂足,The interaction is then discretized between the point on the master surface and the slave node. Strict master-slave contact 在这种关系下,主面的节点可以穿入从面(副面),但副面不可以穿入主面。见下图: [if gte vml 1]> <![endif][if !vml][endif] In the strict master-slave contact formulation used in ABAQUS/Standard, only the master surface is used as a surface, where its geometry and orientation are taken into consideration. The only data that ABAQUS/Standard needs from the slave surface are the location of its nodes and the surface area associat