New features were added to make geometry preparation easier and to offer support for importing and exporting more file formats. Core meshing and sizing algorithms have been improved to give better mesh quality. Significant improvements to the GUI makes Trelis even easier to use.
Geometry
New GAMBIT geometry reader
Added support for reading Parasolid, SolidWorks and Pro/E files (Sold separately)
Improved STEP/IGES translation
Updated geometry kernel to ACIS version 24
Align command improvements
New tolerance option for imprint tolerant
Meshing
Added support for pyramids and wedges
Improved boundary layer functionality
Circle Scheme improvements for more control over circle meshes
Improved Sweeping algorithm for better quality
Added support for tet meshing with baffles and non-manifold geometries
New auto-bias scheme and automatic smooth gradient triangle meshes
New vertex sizing
Improved Skeleton sizing
New Verde mesh quality tools
Additional Fluent metrics: tet equivolume skew and tet squish index
Improved Paving algorithm
New option for mesh refinement with n tets through thickness
Add ability to unite meshed volumes
Mesh IO
Improved exporter for Fluent, IDEAS, Exodus, Patran, Nastran, LS-Dyna, Abaqus
Higher order element improvements including support for higher order wedges
Sphere element support (Exodus)
New material capabilities
GUI
New icons for the pick filters
New cursors for active pick widgets
Replaced Quad/Tri with 2D element picking and Hex/Tet with 3D element picking in pick filters
Various pick widget fixes to pick the right entity type
Modified command panel groupings (ex: Sweep is now in geometry create and geometry modify)
Modified the order that entities appear in the tree (Geometry now appears at the top)
Removed multi-volume bodies from the tree
New webcut tools (webcut with sheet, with plane from surface, with tool surface)
New Surface->Modify->Reverse Normal panel
Enable undo by default in the GUI (first time Trelis is opened)
New Create Bounding Box in Volume->Create panel for easily creating a bounding box around a volume or volumes
Improved responsiveness of the cancel operation button
Changed Patran file type to list .neu instead of .ntr
Added Geometry->Group command panels for group operations
Improved Custom Tools
Includes a shortcut button on the toolbar to the custom tools panel in the options dialog
Added the ability to run a journal file or python script as a custom tool
General
APREPRO function additions: block attributes, centroid, bounding box, closest node
Significant performance improvements in various operations
Mac 64 bit support with the updated geometry kernel ACIS version 24
Improved ID-less support for using older CUBIT and Trelis .cub files
New Reprise License Manager for more flexible license management options
OEM
Complete rebranding of Trelis using xml file
Internationalization fixes
Improved SDK (Sold separately)
Mesh import/export interface for creating custom importers and exporters
Command plug-ins
OS - Windows XP, Windows Vista, Windows 7, Windows 8
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http://www.csimsoft.com/