文档介绍：Straus7 Automeshing Tutorials
Using geometry and automeshing tools in Straus7
Straus7 Automeshing Tutorials
Contents
Introduction 1
Overview of Converting CAD Models for FEA in Straus7 5
Tu to r i a l 1 : Automeshing a Simple Solid Model 9
Tu to r i a l 2 : Extrusion of Solid Meshes 21
Tu to r i a l 3 : Checking Mesh Quality 37
Tu to r i a l 4 : Geometry Cleaning 49
Tu to r i a l 5 : Advanced Features 57
Tu to r i a l 6 : Geometry Attributes 81
Introduction
Straus7 Release 2 includes a set of powerful new tools that can dramatically increase pre-processing produc-
tivity by automatically converting CAD models into FEA models for analysis. Included in this set of tools
are the Clean Geometry, Surface Automeshing and Solid Automeshing tools. Clean Geometry tools are used to
prepare the CAD model geometry for FEA use. This may involve the removal of unwanted geometric detail
or unintended discontinuities in the model. The Surface Automeshing tool is used to generate a high quality
surface mesh consisting of Tri3, Quad4, Tri6 or Quad8 elements. The Solid Automeshing tool is used to gen-
erate a solid mesh consisting of either Tet4 or Tet10 elements. To illustrate the use of tools - and the many
other related new tools and features - and to show how they work in practice, a set of tutorials is provided.
Tutorial 1 gives an introduction to the three main tools by showing how a solid CAD geometry can be con-
verted into a solid FEA model. It describes how the model can be imported and cleaned. It then shows how
the surface of the model can be meshed, followed by the solid meshing of the internal volume. Importantly,
it gives examples of problem areas to consider when converting a CAD model for FEA use. Consequently
the tutorial shows how an FEA mesh can be improved by cleaning the geometry in Straus7.
Tutorial 2 shows how some manual input can be used to exploit the Extrude tool in Straus7. This can then
create a solid hexahedral