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VdmTools
The VdmTools library from Visual Kinematics, Inc. provides a comprehensive
mechanism for accessing data from the model input and
solution results files of
many important commercial MCAE and CFD finite element analysis
(FEA) software systems. A uniform data model
is mapped onto the data structure of all input and results data files (called
libraries in VdmTools). The net result being that VdmTools allows
a single, consistent interface to finite element data from many
sources. VdmTools also provides a "native" library which
supports both read and write operations. All library formats,
whether native or "external" may be accessed through
VdmTools in an identical manner.
Features
- Direct access to many industry standard file formats
- ABAQUS input files and .fil and .odb post data files
- Ansys Inc. ANSYS input files and .rst, .rth, .rmg and .rfl result files
 CEI/EnSight Casefile format
- CGNS database
- ESI/PAM-CRASH DAISY files
- Fluent mesh and data files, FIDAP neutral files.
- Altair/HyperMesh ASCII files
- IDEAS Universal files
- LSTC/Dyna keyword input files and state databases
- NASTRAN Bulk Data files and Output2 result files
- Patran neutral files
- PLOT3D grid and function files
- PTC/MECHANICA design studies
- STL ascii and binary tesselation files
- Model data consists of node, element and coordinate system
information. Element data includes connectivity and type, material
and property ids and user element id. Node data includes coordinates
and user node id.
- Supported finite elements include lines, triangles, quadrilaterals,
tetrahedra, pyramids, pentahedra or hexahedra which may be represented
by linear, parabolic or cubic shape functions. Polyhedra and polygons, which
are used in CFD solvers, are supported.
High order p-elements
are also supported through the PTC/MECHANICA interface module.
- Auxiliary model information such as element properties,
material properties, load and constraint cases
is available if resident on the external library.
- Results data may be maintained at node points, element centroids,
element nodes or element integration points. Scalar, vector and
symmetric tensor (stress) data is supported.
- All libraries are treated as direct access even if written
as sequential binary files (e.g. using FORTRAN sequential I/O).
Data is accessed and coerced to memory resident data structures
only upon request. This eliminates the need for global translation
and data duplication and maximizes I/O operations.
- A number of file formats may be written as well as read. Currently
supported file formats for writing include the following.
- ABAQUS input file and .odb and .fil results file
- ANSYS input file
- CEI/EnSight Casefile format
- CGNS data base
- IDEAS Universal file
- NASTRAN bulk data file and Output2 results file
- Patran Neutral file
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