Femap

Femap V11 previewed at Siemens PLM Simulation Connection.

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Attendees at Siemens PLM Connection in Melbourne were given a sneak preview of Femap V11, and we had the privilege of beta testing a pre-release version.  There are certain aspects of the new version we are allowed to reveal, and the top three items are:

1. External Results Access.  This enables the Femap model size to remain small, whilst efficiently accessing external Nastran results directly from the .op2 file.  This provides significant performance benefits for “large” results (we have tested with tens of GB’s of results).  The primary benefit is not having to import, open and save multi-GB results.  Femap was already efficient at dealing with big models, but the memory requirements to externally access results is further reduced.  All of FEMAP’s strong results processing capabilities remain intact: enveloping, results transformation, results arithmetic, beam cross-section results, linear combinations etc – so there are no disadvantages to using external results.  In practical terms, users may modify their data management practices, based on the fact that the Femap model might (at the user’s option) no longer contain all of the analysis results within the model.

2. Graphics Performance.  External results access provides some efficiency improvements in graphics performance – however, Femap V11 provides a major revamp of its OpenGL modules, which provides significant performance improvements on many typical graphics options that users own.  We commonly work with complex models that are 1-2 million nodes, with multiple results cases (tens of GBs) and we noted that these models were substantially “lighter/faster”, even on an ancient nVidia FX 1700 graphics computer.  Customers who have invested in graphics performance will enjoy significant benefits in large model useability, as Femap V11 makes more efficient use of the hardware.

3. Geometry from Mesh.  Femap is already superb at creating “geometry-for-FEA” quickly and cleanly.  Geometry from Mesh adds to Femap’s already substantial ability to make “orphan meshes” more productive.  Femap users are often presented with old or un-associated meshes from external sources, such as legacy analyses or other FEA software.  Creating geometry from mesh provides all the benefits of being able to use that geometry for all its productive value: modify the design, improve the mesh, apply loads/constraints, global/local modelling, refine the mesh on-the-fly with the Meshing Toolbox.

Femap V11 extends Femap’s strong tradition of being the most comprehensive, cost-effective simulation technology on the planet!

Welcome to our new users

Our new customers list has grown nicely over the last 12 months, and we are thrilled and thankful to now be supporting:  BMT-WBM, SKM Global, Joy Global, Broadcast Australia, Rallyspeed, Chemstore International, CCG Composites, Visy, SMR, Peter Maher & Associates and more.  This adds to a growing community of companies who are discovering the benefits of strong, cost-effective technology, backed up by people who are serious about providing quality support.  From companies as big as QR National and Bluescope, through to single person contractors – we help companies maximise the value they get from their investment in simulation technology and skills.

We’re presenting at PLM World in Las Vegas

Safety Barrier Impact

We were invited to present at PLM World in Las Vegas in May.  Our presentation was a “showcase tutorial” of NX Nastran’s Advanced Non-linear capability via NX CAE.  Our simulation expertise uniquely positions us to understand the pro’s and con’s of Siemens PLM’s Femap with NX Nastran vs NX CAE as productive and cost-effective technologies for accelerating product development.  For users who need a hands-on, step-by-step tutorial on using NX Nastran Advanced Non-linear in the NX CAE environment, then please visit the Tech Tips section of our website here to download the tutorial.

Attack of the Version 8.5’s

Plate Edge-to-Edge glue in NX Nastran 8.5

There have been three significant software releases in the recent past, all now at version 8.5.  Here is a brief selection of the items we believe provide the most productive benefits for users:

NX Nastran 8.5

  • Edge to Edge glue for 2D solids and plates.  NX Nastran’s glue capability is excellent for combining hyper-quality detailed mesh with “accurate load transfer” coarse mesh: usually solid-to-solid, but also plate edge to solid face (eg. for properly transitioning from plate to solid meshes).  That capability is enhanced with the ability to do this between edges of plates.  Thus, transitions can be made easily between coarser and finer mesh, or disparate (eg. cut-and-shut) models can be combined with minimum connection effort.
  • Linear Contact is now supported with Inertia Relief (Inertia Relief is a “snapshot” linear analysis of a structure subject to imbalanced loads and zero/partial external constraints).
  • SMP Parallel – which is provided as standard capability for the Sparse Solver – is extended to include as standard the Element Iterative solver.  The element iterative solver provides significant performance advantages for “well-conditioned” models dominated by moderate to high density of solid elements (= high bandwidth in structural matrix, compared to eg. plates and beam models which typically have very “sparse” structural matrices).
  • Memory efficiency improvements for big models with glue and contact (we regularly run huge models with glue and contact with excellent performance – these ongoing efficiency improvements provide ever-increasing benefits to industrial-grade analysis productivity).
  • A collection of efficiency and feature improvements for dynamics and acoustics.
  • The ability to create .f06 files (analysis diagnostics) in Excel format.

NX 8.5

NX CAE  (the area of NX of most interest to us), includes several major changes which are useful to the designer/analyst

  • “FE Model in Context”.  In earlier versions, there was some “process overhead” in switching between: original CAD; idealised CAD; and FEM.  “FE Model in Context” takes away some of this “layering” to provide smoother user ergonomics in the activities which need to be done in each of these areas.  NX CAE provides a unique tied connection between original CAD and idealised CAD (eg. mid-surfaces from original thin solids) and in-depth analysis models.  FE Model in Context provides a major enhancement to the way in which a user interacts with these important aspects of the simulation process.
  • Major enhancements to FEM model Update.  This one area of change provides a huge improvement in the way NX CAE connects “industrial grade” FE to the original CAD.  This is because “industrial grade” FE often requires quite substantial abstractions of engineering content from CAD geometry.  NX CAE has an excellent collection of automated abstraction (eg. its mid-surfacing capabilities are excellent), however there are situations where manual operations are required to extended surfaces, trim faces, break curves etc. – to produce a quality engineering analysis representation of a CAD assembly.  In previous versions, any “manual” changes to the FE idealisation were “lost” when the original CAD was updated.  Thus the advantages of the connection between the original CAD and the FE were somewhat diluted if there were any reasonable quantities of manual modifications to create the FE model.  In NX CAE 8.5, the update between original CAD and the FE model now occurs at the “face” level, rather than the “body” level.  This provides two huge advances: (a) updates are faster, because their effect is localised to the area(s) of the FE model affected by the change(s); and (b) only those manual updates in the affected area need to be recreated.

SimWise 8.5

SimWise (from Design Simulation Technologies) is a comprehensive simulation system for multi-body kinematics and dynamics.  It is a complete standalone system, but with tight integration into numerous CAD systems (and “neutral” geometry formats) for rapid assessment of motion and forces of motion in kinematic assemblies.  SimWise Motion provides the 3D Multi-Body Dynamics (MBD) simulation, whilst SimWise 4D adds the ability to conduct FEA analysis of kinematic members directly using forces from the MBD simulation.  SimWise includes a comprehensive toolkit of MBD features: gears; sliders; hinges; ball joints; pulleys; ropes; actuators; motors; bushes; springs; dampers; belts.  The intelligent integration with CAD recognises numerous types of CAD connections and constraints, to help rapidly define a kinematic assembly.  Similarly, strong integration with Excel makes it easier for the engineer to apply advanced behaviours and properties. Click here for more information.

Injection Moulding Simulation with Moldex 3D

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We have said too little about Moldex 3D – superb, robust, high-performance technology – absolutely focused on delivering quality full 3D moulding simulation for a wide range of physics, processes and materials.
Moldex 3D R11 included numerous enhancements that improve productivity and depth.  Here are just a few key points:

  • Easier and more comprehensive methods for designing feeding systems and cooling circuits
  • Additional meshing methods to improve mesh quality in difficult geometry – with minimal user intervention
  • Venting simulation
  • Core-shift analysis (deflection of cores due to differential pressures)
  • Better visualisation of 3D coolant flow in baffle, bubbler and conformal cooling systems.
  • Simulation of Reactive Injection Moulding; plus gas and water assisted injection moulding; co-injection; microcellular foaming; under-fill encapsulation
  • Design of Experiments methods to reduce trial and error
  • Performance enhancements to multi-core and cluster computing, and addition of GPU parallel processing
  • More materials in an already comprehensive database.

Additional details can be found at: https://moldex3d.box.com/shared/static/okanc8seob4ixthcspc9.pdf

Electromagnetics Simulation with Integrated Engineering Software

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Integrated provides a vast range of electro-mechanical simulation capabilities from 2D electrostatics through to 3D charged particle trajectory simulation in high frequency electromagnetic fields, with ANSTO being one of the significant local users.  Integrated’s unique combination of finite element, boundary element and ray-tracing methods allow a breadth of physics to be simulated with unequalled numerical performance and accuracy.  From DC to TeraHertz, Integrated has the solution.

Dont forget you can try the full version of Femap!

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For a free 45 day trial of the full version of Femap with NX Nastran either contact us or click here to download the trial.

This trial offers a great opportunity to compare your existing FEA solution with Siemens FEMAP including free support by CAD Central Ltd.

This trial uses the full version of Femap with NX Nastran, without any artificial limitations, and includes the NX Nastran Dynamic Response and Design Optimization capabilities.

As part of the trial you will have access to many Femap tutorials that cover all kinds of modelling techniques and analysis types in the online documentation. These are available through Femap’s Help menu – Help / Examples. There are also many Femap video tutorials available online that you can access through the Femap demo pages on the Siemens website.

Most importantly we offer free support provided by real engineers so you can leverage their decades of FEA experience for the duration of the trial by simply calling 1800 367 332.

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