When you select the Translation of Flexbody Files option from the FlexBodyPrep wizard, the
following options are available: Figure 1. FlexbodyPrep Wizard – Translation of Flexbody Files
Translate ADAMS mnf file into MV h3d flexbody
Converts an ADAMS MNF file into an Altair H3D
flexbody file.
Since the required information is embedded in the ADAMS MNF file,
you do not need to provide additional information.
Select ADAMS mnf file
Select the ADAMS MNF file that you want to translate.
Save the *h3d file as
Select the filename and directory to which you want to save the H3D
file.
Mirror existing h3d flexbody
Mirrors the H3D flexbody around a specified plane.
The resulting H3D file accurately represents the mathematical mirror of the
original H3D. All laws, such as right hand rule, are followed.
Specify the original h3d file
Select the source H3D file.
Specify the mirrored h3d file name
Enter a name for the mirrored H3D file.
Select the plane for the mirror image
You must specify the plane for mirroring. The default is
Mirror_XZ plane (consistent with MDL pair entities). Other
options include Mirror_YZ and Mirror_XY.
Translate the MV h3d flexbody into ADAMS mnf file
Converts an Altair H3D file into an ADAMS MNF
file.
Select MV h3d file
Select the Altair H3D file that you want to translate.
Save the ADAMS *mnf file
Select the filename and directory to which you want to save the MNF
file.
Note: Stress and strain modes are not converted to an MNF file.
Translate MV h3d flexbody into ADAMS mtx file
Create the solver flexbody matrix file (MTX) for
ADAMS. The MTX file can be generated independent of the solver input file (when
using FlexBodyPrep) or generated when the ADAMS solver input deck is generated
from MotionView.
When you select this option, the
following options are displayed:
Select MV *.h3d file
Select the Altair H3D file that you want to translate.
Save the *mtx file
Select the filename and directory to which you want to save the MTX
file.
Specify the Invariants (TTTTFTTTF)
Specifies which of the nine invariants are to be active and included in the
MTX file. See ADAMS documentation for detailed mathematical description of each
invariant.
Select the nodes
Select from All, Interface Nodes, or User Specified.
Select which nodes
will be used by the flexbody when ADAMS runs the simulation. Typically, each
node is utilized by the ADAMS model for either interfacing (joints, forces,
etc), or for sensors (requests). It is important that this list is the superset
of nodes to be used for interfacing and sensors.
Specify the nodes (6:8+10)
You can identify the nodes which will be candidates for interface nodes for
the later step of MDL implementation. It is important that only interface nodes
and not sensor nodes be identified at this point. You can enter ranges, such as
4:12, or combinations, such as 4:12 +14.
Select the modes
Select All or User Specified.
The subset of the total mode set in the H3D
file that will be used by the ADAMS solver. You can include all modes in the H3D
file or a subset, but you cannot add modes that were not originally created in
the H3D file.
Specify the modes
If selecting a subset of the available modes, enter the specific mode set
here.
Create mtx for the mirrored part?
Generates two MTX files. The second file is the mirrored MTX file around the
specified plane.
Note: Since the H3D file is necessary to display graphics in MotionView and HyperView, this
method of flexbody generation for the mirrored side does not provide the
information needed to obtain graphics of the mirrored side during
post-processing.
Select the plane for the mirrored image
You must specify the plane for mirroring. The default is Mirror_XZ plane
(consistent with MDL pair entities). Other options include Mirror_YZ and
Mirror_XY.
Specify Units for the MBD Solver
Since this method of creating the MTX file is independent of any MDL model,
you must specify the unit system of the solver input file. For MTX files that are
generated from an MDL model, this information is implicit.
Translate the NASTRAN pch file into MV h3d file
Converts NASTRAN PCH file into an Altair H3D
flexbody file.
Select NASTRAN *.pch file
Select the NASTRAN PCH file that you want to translate.
Save the *.h3d file
Select the filename and directory to which you want to save the Altair H3D
file.
Translate the MV h3d flexbody into DADS fdf file
Converts an Altair H3D file into a DADS FDF
file.
Select MV *.h3d file
Select the Altair H3D file that you want to translate.
Save DADS *.fdf file
Select the filename and directory to which you want to save the DADS FDF
file.
Clear
Clear your selections and reset the wizard.
OK
After making your selections, click
OK to have the wizard create your file.
OK
Assembles your selections into set of command line arguments for flexprep
and invokes flexprep.
To run flexprep from command line:
Copy and paste the arguments created by the FlexbodyPrep wizard into a
script (UNIX) or .bat file (PC).
