NX NASTRAN V7.1 ofrece las siguientes mejoras y novedades más importantes:
DYNAMICS
...
•
Added an option for multi-body dynamic interface (MBDEXPORT) to export flex
bodies to Matlab script file format. And added option to output more flex
bodies in standard second order format.
•
New option for converting structural damping to viscous damping using
modal frequencies.
• Improved output for DDAM SOL
187 and removed limitation for models to be
in in-lb units.
• Added an option to modal
effective mass case control (MEFFMASS) to filter
output of modes to those with an effective mass above a user specified
threshold value.
•
Force output on damping elements is now available for transient response
analysis.
• Added an option to transient
initial conditions case control (IC) to use
the defined displacement at time 0.0 as the
initial starting position.
• A-set reduction for
unsymmetric matrices now supported for rotor dynamics.
•
Added describers to MODSEL case control to allow selection of fluid modes
for response computation.
• New direct matrix input of
acoustic coupling matrices using A2GG case
control.
• Extended modal contribution
case control (MODCON) to support acoustic
responses.
• Added panel contribution case
control (PANCON) to output acoustic response
contribution by panels.
• New SET3 card for defining
panels by grid, elements, or property IDs.
Panels are used to understand contributions for
acoustic response.
• New defaults set for the
search distance and angle criteria on the
acoustic coupling control bulk data (ACMODL).
• New coupling method option
added to ACMODL.
ELEMENTS
...
• New
orthotropic material (MAT11) for solid elements. Also supports temperature
dependent properties (MATT11).
• Solid elements are now supported as non-linear elements
in SOL 106 and 129 for large displacement
effects.
• User control added to adjust the perpendicularity angle
tolerance for shell element material
orientations.
• Pyramid elements (CPYRAM) can be used as acoustic
elements
SUPERELEMENTS
...
• Simplified external superelement usage by not requiring external superelement bulk data input in the system input file.
LINEAR
CONTACT ...
• Define contact regions for solid elements by property id with BCPROPS.
GLUE
...
• New
Edge-to-Surface glue connection capability to join the edge of shell
elements to surfaces of either shell or solid elements.
• Define glue regions for solid elements by property id
with BCPROPS.
ADVANCED
NON-LINEAR ...
•
Added linear and parabolic plane stress (CPLSTSx) and plane strain
elements (CPLSTNx).
• 2D edge contact support of new plane stress and plane
strain elements.
• Define glue and contact regions for solid elements by
property id with BCPROPS.
• Tetrahedron and pyramid elements with variable nodes can
be used for contact surfaces.
• Restart option improved to recover results that were not
requested in the original solution.
• Added support of PUNCH output requests
OPTIMIZATION
...
•
Added an option to determine the best design cycle which is usually the last
cycle but not always.
• New option in the ECHO case control to output the
complete updated bulk data file.
• Support design variable creation for recent property
improvements to PSHELL, PBUSH, and
PCOMPG.
• Improvements made for the normalization of constraints
with the alternate optimizer algorithm.
PROCESS
IMPROVEMENTS ...
• New
BOLTLD bulk data input added to provide flexibility in defining
combinations of bolts and bolt preload forces and scaling bolt preloads.
• Improved solution efficiency for bolt preload with
contact.
• New interface to electromagnetic field loading.
DISTRIBUTED
MEMORY PROCESSING (DMP) SOLUTIONS
...
•
RDMODES performance improved in the partition phase.
• RDMODES supports superelements
in modal analysis.
• RDMODES supports residual
vectors, panel participation factors, SPCD
enforced motion and
modal contributions.
• Geometry partitioning option
(GPARTN) supported with GDSTAT. This allows
CWELD elements and glue connection to be used
in static DMP solution.
PLATFORM
SUPPORT ...
• The default I/O option on the windows platforms changed from File Mapping to Raw I/O. This works better with Windows 7.
OPERATING
SYSTEM REQUIREMENTS
...
The following table lists the minimum operating system requirements to run
NX Nastran 7.1. These are the operating system levels on which the product was built. However, the product was tested and runs on higher level operating
systems. For example, the Windows ILP-32 executable was built on WXP SP3 but was also tested on Win Server 2008.
You can use the ugsinfo command to display information about the system on which you're installing NX Nastran. See the NX Nastran
Installation and Operations Guide for more information.
| Platform (Build Types) ------------- |
Build Operating System ----------------------- |
Architecture Name |
Additionally Supported OS ------------- |
| INTEL
Windows (ILP-32) |
Windows XP sp3 | i386 | Win Server
2008 Vista sp2 32-bit Vista sp2 64-bit, Windows 7 32-bit, Windows 7 64-bit |
| INTEL
Windows (LP-64, ILP-64) |
Windows XP-64 SP1 | Windows
XP-64 sp2 Win Server 2008 Vista sp2 Windows 7 |
|
| X86_64
Linux (Opteron/Xeon) (LP-64,LP-64 DMP) (ILP-64, ILP-64 DMP) |
Suse 9, sp2 | LP-64:
x86_64linux ILP-64: x86_64linuxl |
SuSE10 SuSE10 sp1,sp2,sp3 Red Hat EL 4.0 Red Hat EL 5.0 |
| Itanium
Linux (LP-64, LP-64 DMP) (ILP-64, ILP-64 DMP |
Red Hat EL3.0 | LP-64:
hpuxia64 ILP-64: hpuxia64l |
Red Hat EL4.0 |
| HP Itanium (LP-64, LP-64 DMP) (ILP-64, ILP-64 DMP) |
Itanium 2 HP-UX B.11.23 | LP-64:
hpuxia64 ILP-64: hpuxia64l |
|
| IBM
Power (LP-64, LP-64 DMP) (ILP-64, ILP-64 DMP) |
Power 5 AIX 5.2 | LP-64:
aix ILP-64: aix64l |
AIX 5.3 AIX 6.1 |
| SGI
Altix (LP-64, LP-64 DMP) (ILP-64, ILP-64 DMP) |
SGI ProPack 3 sp4 | LP-64: altix ILP-64: altix64l |
SGI
ProPack 4 SGI ProPack 5 |
SÍGUENOS
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