NX NASTRAN V7.1 ofrece las siguientes mejoras y novedades más importantes:


   • 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.


   • 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


   • Simplified external superelement usage by not requiring external superelement bulk data input in the system input file.


   • 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.


   • 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 


   • 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.


   • 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.


   • 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.


   • The default I/O option on the windows platforms changed from File Mapping to Raw I/O. This works better with Windows 7.


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.

(Build Types)
Operating System
Supported OS
INTEL Windows
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
(LP-64,LP-64 DMP)
(ILP-64, ILP-64 DMP)
Suse 9, sp2 LP-64: x86_64linux
ILP-64: x86_64linuxl
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

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