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Femap 11 What’s New.

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Presentation on theme: "Femap 11 What’s New."— Presentation transcript:

1 Femap 11 What’s New

2 Femap Release Schedule
For several years, Femap has been on an approximately yearly release schedule v11: January 2013 v10.3.1: January 2012 v10.3: October 2011 v10.2: October 2010 v10.1.1: January 2010 v10.1: August 2009 V10: December 2008 Courtesy of Predictive Engineering

3 Femap 11 Launch Plan Femap version 11 Announcement: 9th January 2013 Available online on GTAC site Release to manufacturing: early January 2013 Shipping to customers: late January 2013 NX Nastran NX Nastran 8.5 is included in Femap with NX Nastran bundle

4 Femap continues to provide:
Femap Direction Femap continues to provide: A modeling environment that’s dedicated to FEA The in-depth, detailed functionality required to accurately model real-world parts and assemblies Customer driven features and functionality Courtesy of GleisFrei Courtesy of Femtec Courtesy of IHC Handling Systems Courtesy of Duraldur

5 Femap 11 Primary Focus and Messages
Improved productivity through process improvement Improved results data processing Streamlined XY plotting capability Increased simulation scope through discipline extensions External superelement support NX Nastran integration enhancements Faster preprocessing through performance improvements Improved graphics architecture

6 Femap 11 Key Development Items
External results files Graphics performance improvements Create geometry from mesh External superelement support Streamlined XY plotting NX Nastran integration Customer driven enhancements

7 Femap 11 Results Data Considerations
Quantity of results data generated continues to increase Model sizes continue to increase Advanced analyses with incremental solutions can create huge amounts of data Dynamic response time or frequency steps Nonlinear load or time steps Time to access data increases Database sizes can become very large and unwieldy to manage The solution: Option for external results files that can attach to the Femap modfem database file

8 Femap v10.3 and Prior Versions External Results Files
Imported results data (10.3 and prior versions) .modfem .op2 Model Information, Nodes, Elements, Materials, Properties, Loads, etc. NX Nastran Results File File / Import / Analysis Results… When data is internalized into Femap, each output set gets a header, containing information about the analysis program, analysis type, time step value or frequency value, adding a little to the total size of the data. In addition, FEMAP will calculate some data that’s not output by the solver, i.e. Major Stress, vonMises Stress. The end result is that the storage requirement for the data actually expands a little bit when it’s internalized by Femap.

9 Femap 11 External Results Files
Attached results data .modfem .op2 Model Information, Nodes, Elements, Materials, Properties, Loads, etc. File / Attach to Results… NX Nastran Results File (.op2) With v11’s “Attach”, the header is still created, but that’s all that is stored with FEMAP. This keeps the model file itself small and light. In addition, all the results data has not been run through the FEMAP database and now does not bloat FEMAP’s database cache.

10 Femap 11 External Results Files
.op2 Attach multiple databases .modfem File / Attach to Results… In a case where one points to a large number of results files, it’s very obvious how this can keep the demands on storing the Femap model to a minimum, speeding up File – Open, and keeping Femap’s memory footprint lower when running.

11 Femap 11 External Results Files
Attach to external results files Femap modfem database size minimized Results data import no longer required Postprocessing functionality does not change External and internal results can coexist Solver support rollout plan: Nastran .op2 and FNO addressed initially ABAQUS .odb, Nastran .xdb, ANSYS .rst to follow Significantly increased efficiency for accessing transient results with attached results files vs. modfem imported results No change how everything is done in FEMAP, all post-processing commands are the same and don’t differentiate between attached and internalized data. One can have any number of attached files and internalized output sets. Nastran .op2 support in v11, looking to add the other formats as fast as we can. The code has been architected such that once the first one has been done (.op2), it’s now much easier to plug in other output file formats. Attached results can be selectively internalized. Once output data has been attached, the user can then specifiy that some, or, all of it, can be internalized as before to reside in the FEMAP .modfem file.

12 Femap 11 External Results Files
International Space Station Laboratory Module 188,935 Nodes 184,592 Elements Output File: NX Nastran op2 26 Static Results Sets: 2.9GB Results Mode Model Size Memory Import/Attach Time Envelope Time No results 68.8 MB 303 MB - Internal 3.3 GB 3.64 GB 103 s 200 s Attached 70.7 MB 632 MB 17 s 164 s Boeing International Space Station Laboratory model as a baseline. Without any output data, it’s roughly 69MB on Disk, and 303 MB of RAM used when running. Attaching to the file results file as opposed to internalizing is better across the board, it’s faster, smaller, and doesn’t clog Femap’s database cache with output data. >6x faster >20% faster

13 Femap 11 External Results Files
Benefits Greater efficiency with faster data access Attach time >6x faster than import time Greater efficiency with reduced memory usage Smaller Femap modfem database size More manageable data handling and storage

14 Femap 11 NST External Results Example
Railway vehicle extrusion panel Advanced Nonlinear (SOL 601) 13,822 nodes 13,951 elements Model size without output: MB NX Nastran op2 file: 5.85GB 2,556 nonlinear static results steps Results Mode Model Size PC Memory* Import/Attach Time Reopen Time Internal 12.05 GB 7.75 GB 25min 220 s Attach 8.692 MB 1.7GB 1min 1 s Attach / Internal 0.486 ** 0.219 25x faster 220x faster * Include other windows applications, ** Including op2 file

15 Femap 11 NST External Results Example
“I was very impressed with the performance of the external results capability in Femap v11. Using this new feature, we were able to significantly reduce processing time while keeping the computer resource usage low. Reopening a large analysis result file was over 200 times faster. This is great news for CAE users who are concerned about the trend of increasing analysis model sizes.” Cong Yuan, Engineering Department, NST

16 Femap 11 Graphics Performance Considerations
Quantity of model data displayed continues to increase Model size trend still increasing Graphics performance improvement is a continuous process in Femap Previous transition from Windows GDI to OpenGL Femap’s use of OpenGL continues to expand

17 Femap 11 Graphics Performance Improvements
Vertex Buffer Object (VBO) An OpenGL feature that allows data to be uploaded to the graphics card Offer substantial performance gains Vertex data resides in graphics card memory rather than system memory Vertex data can be rendered directly by graphics card Vertex Buffer Objects (VBOs) are Buffer Objects that are used for vertex data. Since the storage for buffer objects is allocated by OpenGL, vertex buffer objects are a mechanism for storing vertex data in "fast" memory (i.e. video RAM or AGP RAM, and in the case of PCI Express, video RAM or RAM), thereby allowing for significant increases in vertex throughput between the application and the GPU.

18 Femap 11 Graphics Performance Improvements
Femap 11 includes support for VBOs Up to an order of magnitude performance improvement in the dynamic rotation of large models Depends on graphics card, graphics memory, and the model – can use large amounts of graphics memory Vertex Buffer Objects use a lot of RAM, but they’re a lot faster than not using them.

19 Femap 11 Graphics Performance Improvements
Model Description Performance Improvement 1600 solids – each solid is a 100x1x1 brick with the four long edges filleted to .1 radius Model 1 in /64 with no vertex arrays 440ms, in dev 64 release 50ms (8.8 times faster) 1600 solids – each solid is a sphere of radius 1 Model 2 in /64 with no vertex arrays 1213ms, in dev 64 release 270ms (4.5 times faster) 640,000 quad4 elements Model 3 in /64 with no vertex arrays 427ms, in dev 64 release 408ms but with VBO on, 64ms (6.3 times faster) and uses about 151MB of graphics memory 1,919,488 tetra10s – 16 solids of 100x100x1 block – each block has 119,968 elements Model 4 in /64 with no vertex arrays 746ms, in dev 64 release 750ms but with VBO on, 130ms (5.7 times faster) and uses about 252MB of graphics memory Performance Numbers – basically 6 – 8 times faster dynamic rotation performance. *AMD v3900 card

20 Femap 11 Graphics Performance Improvements
Limits of Performance on Dell Precision Mobile Workstation I7-2860QM – 2.5 GHz 16 GB RAM nVidia M2000 – 2GB RAM Graphics Multiple Copies of the Boeing ISS Laboratory Module 4.5M Nodes and Elements Dynamic rotation performance using VBOs: ~8x faster, V10.3 to v11 Vertex Buffer Objects can make a 4.5 Million Node/Element model 6x faster as long as you have a 2 GB Graphics card. After v11 (v11.1), OpenGL based graphics will be faster still with a lot less RAM requirements.

21 Femap 11 Graphics Performance Improvements
Benefits Increased productivity with faster graphics performance Dynamic rotation of large models >5x faster using VBOs

22 Femap 11 Working with Legacy FE Models
It is sometimes necessary to work with legacy FE models for which there is no underlying geometry available, only the FE mesh Performing model updates to such models or simply changing the mesh density is difficult and time consuming Error prone: danger of not adhering to the original geometry topology The solution: Femap’s create geometry from mesh capability

23 Femap 11 Create Geometry from Mesh
Create surface geometry from existing shell meshes when there is no underlying geometry available Easily make model changes to existing meshes Easily remesh existing FE models Model topology maintained Automatic mesh / geometry associativity Mesh New Geometry New Mesh FE models can be updated or remeshed more easily. Geometry can be created based on the original mesh and is automatically associated to that mesh. With the new geometry in place, it can be modified using the existing geometry modeling tools and remeshed. Further mesh changes can be made using the Meshing Toolbox. In addition, you can simply delete the mesh once you have the geometry, add cutouts and other modifications and then remesh. You can work on individual patches of shell elements and turn them into geometry. Alternatively, you can select the entire mesh and generate a surface, but some of the cusps may not be created. For most effective results, discreet regions should be picked manually.

24 Femap 11 Create Geometry from Mesh
Workflow: Import FEA input file…

25 Femap 11 Create Geometry from Mesh
Workflow: Create surfaces from patches of elements using Femap’s selection methods…

26 Femap 11 Create Geometry from Mesh
Workflow: Stitch the surfaces together…

27 Femap 11 Create Geometry from Mesh
Workflow: Add cutouts, stiffener locations, whatever modifications are required…

28 Femap 11 Create Geometry from Mesh
Workflow: Re-mesh the geometry to create a new FE model

29 Femap 11 Create Geometry from Mesh
Benefits Increased productivity Easier to remesh or make model changes to legacy FE models for which there is no underlying geometry available Less error prone When making model changes or remeshing original model topology is maintained

30 Femap 11 External Superelements
Reduce upstream SEs to residual structure What is a superelement? Represents a portion of a FE model SE defined by nodes (interior points) Connects and reduces to boundary points Exact static reduction Additional dofs added for dynamic reduction Analysis is performed on residual structure Perform analysis on residual structure Data recovery of upstream SEs Superelement (SEID=70) Residual Structure (SEID=0) 70 K, M B, P

31 Femap 11 External Superelements
How are superelements used? Break a large model into substructures and analyze it piece by piece Reduce model size for advanced analyses like nonlinear and dynamics (analysis only performed on residual) Conveniently split a model up for organizational reasons Share model information while maintaining confidentiality – external superelements

32 Femap 11 External Superelements
What is an external superelement? Matrix representation of a component or substructure: [K], [M], [B], {P} Transfer model representation without compromising confidentiality – no geometry or FE model data included Winglet Model Common node attachment points

33 Femap 11 External Superelements
Winglet: create external superelement Transfer SE data to wing OEM Wing: attach the external SE in the assembly run Winglet External Superelement

34 Femap 11 External Superelements
Set up the creation of external superelements Creates the EXTSEOUT and ASSIGN statements Creates SPOINT/QSET entries on the fly for modal analysis (CMS) In shipping Femap, one can already assign Superelement IDs to nodes and create a Superelement run. With v11, support for External Superelements will be available. Femap makes it easy to create a store external superelements, and then once these are available (or supplied to you by a 3rd party), Femap add new functionality to create the full system model using any number of superelements and a residual structure.

35 Femap 11 External Superelements
Set up for the inclusion of external superelements in subsequent assembly runs (Superelement license required) Automatically creates the ASSIGN statement

36 Femap 11 NX Nastran 8.5: External Superelements
External superelement loads Static loads are now stored with external superelements Load matrix {Pa} written out in the user-specified format Column sorted to match load IDs Results data can be recovered in the system run with SELOAD bulk data entry

37 Femap 11 External Superelements
Benefits Increased productivity Easier to create and assemble external superelements Easier management of NX Nastran input reference entries Less prone to error All NX Nastran file management and external superelement entries are created automatically

38 Femap 11 XY Plotting Considerations
Increasing model size and corresponding quantity of results data lead to increasing difficulty in timely results comprehension and understanding of model behavior XY plotting is a crucial component in results processing The solution Streamlining and extension of Femap’s XY plotting capability

39 Femap 11 Streamlined XY Plotting
New XY Plotting Interface Enhanced graphics Unlimited number of curves can be displayed at the same time Any number of charts can be saved to the database Future development Extension to a full charting capability Additional chart types – spline, bar, pie A complete do-over. No more limits on number of curves and a lot more options. User input at this time would be greatly appreciated – is there something users would like added to current XY-plotting?

40 Femap 11 Streamlined XY Plotting

41 Femap 11 Streamlined XY Plotting
XY plotting based on data series Different groups for different data series Different beginning and ending output sets for transient data View Femap functions Modern charting interface in a fully functional Femap pane Context sensitivity: right-click access to features and controls Title: font, location etc. Axes: logarithmic, grid lines, tick marks, hide Background, colors, style Markers: size, shape Labels: data values Tooltip querying

42 Femap 11 Streamlined XY Plotting
Benefits Increased productivity Easier creation of XY plots Faster and easier comprehension of analysis results Easier report creation

43 Femap 11 NX Nastran Integration
Solid composite modeling PCOMPS physical property for composites modeling with hexa and penta solid elements MATFT definition for failure theory material constants Benefits of solid composites Offer a more geometrically precise representation More accurate interlaminar shear stresses than a 2D laminate representation

44 Femap 11 NX Nastran Integration: Solid Composites
Solid composite modeling (cont.) Ply layup modeled with solid hexas and pentas (linear and parabolic) 1 to n plies per element Ply thickness is relative Ply failure theories: Tsai-Wu, Hill, Maximum Stress, Hoffman, LaRC02 Interlaminar failure theories: Shear and Normal

45 Femap 11 NX Nastran Integration: Bolt Preloads for Solids
Bolt preloads for solid elements Extension of beam element bolt preload modeling capability Represent preloaded bolts with solid hexa and penta elements Region definition with preload loading Benefit More detailed stress recovery in and around bolt locations

46 Femap 11 NX Nastran Integration: Nonstructural Mass
Nonstructural mass regions Mass definition independent of structural model Define mass regions based on: Geometry (curves, surfaces) Elements (pbeam, pshell, psolid) Apply mass per area or length; total mass on area or length Mass regions are controlled within subcase level Benefits Easier control and distribution of nonstructural mass Can apply differing mass distributions in a single run

47 Femap 11 NX Nastran Integration: Variable Acceleration Load
ACCEL entity Static acceleration load definition Allows different acceleration loads over different parts of the model Benefits Easier to simulate combined rotational and translational accelerations Example applications: Space systems

48 Femap 11 NX Nastran Integration: MCID
MCID: specify shell element material angle definition by coordinate system ID Easy to specify material angle across many elements regardless of their orientation MCID x-axis is projected onto elements

49 Femap 11 NX Nastran Integration: Linear Contact Buckling
Linear contact in buckling solutions Standard contact regions Set buckling solution in Analysis Manager Postprocessing reveals eigenvalue and eigenvector taking contact regions into consideration

50 Femap 11 NX Nastran Integration
Option to preserve INCLUDE statements Entities in the included data are not added to the Femap database Interfaces preference Support for PARAM,BAILOUT Prevents bailout of solution due to errors for model checking Nastran bulk data option Create ASSIGN statements in Analysis Text dialog in Analysis Manager

51 Femap 11 Customer Driven Enhancements
Mesh edge split Easy mesh splitting by selecting two nodes on an element edge Split propagates through the model maintaining a contiguous mesh Define limit split regions to control mesh splitting Splits hexa and penta solids, shells and beams

52 Femap 11 Customer Driven Enhancements
Mesh splitting: shell and beam model Automatically splits any beams encountered

53 Femap 11 Customer Driven Enhancements
Global plies Automatically create global plies as you are creating a layup

54 Femap 11 Customer Driven Enhancements
New Add Connected Elements element selection method in the Entity Selection dialog Selects picked elements and all the elements to which they connect Pick Elements Add Connected Elements

55 Femap 11 Customer Driven Enhancements
Model Info tree scrolling Easier navigation and scrolling through long lists of entities like properties and materials Set maximum number of entities to display in File / Preferences Scroll using Previous / Next controls With pointer over visibility checkboxes: Scroll using mouse wheel Scroll using <CTRL> and <SHIFT> shortcuts with mouse wheel

56 Femap 11 Customer Driven Enhancements
Database cleanup during save added to release any unused space Automatically compresses database reducing database size by freeing up previously used space e.g. after results output has been deleted Copy / Move to Set command added for loads and constraints Allows easier load and constraint definition set up within set definitions

57 Femap 11 Customer Driven Enhancements
Ability to show up to 2 additional output vectors Show results on line, shell, and solid elements at the same time Show results on different types of elements with same topology (i.e., beam, bar, and rod results) all in one plot. Currently one can plot plate and solid data in the same post-processing windows, we’re adding line data as well.

58 Femap 11 Customer Driven Enhancements
Redesigned Select Postprocessing Data dialog Filters added to aid output set and vector data selection

59 Femap 11 Customer Driven Enhancements
Results enveloping Quick results envelope creation directly from the Model Info tree

60 Q and A

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