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© Siemens AG 2013. All rights reserved.
Siemens PLM Software
Femap 11What’s New
Page 2© Siemens AG 2013. All rights reserved.
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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
Page 3© Siemens AG 2013. All rights reserved.
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Femap 11Launch 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
Page 4© Siemens AG 2013. All rights reserved.
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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 IHC Handling Systems
Courtesy of Duraldur
Courtesy of Femtec
Courtesy of GleisFrei
Page 5© Siemens AG 2013. All rights reserved.
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Femap 11Primary 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
Page 6© Siemens AG 2013. All rights reserved.
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Femap 11Key Development Items
External results files
Graphics performance improvements
Create geometry from mesh
External superelement support
Streamlined XY plotting
NX Nastran integration
Customer driven enhancements
Page 7© Siemens AG 2013. All rights reserved.
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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
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Femap v10.3 and Prior VersionsExternal Results Files
Imported results data (10.3 and prior versions)
Model Information,
Nodes, Elements, Materials, Properties, Loads, etc.
NX Nastran Results File
File / Import / Analysis Results…
.modfem .op2
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Femap 11 External Results Files
Attached results data
Model Information,
Nodes, Elements, Materials, Properties, Loads, etc.
NX Nastran Results File
(.op2)File / Attach to Results…
.modfem .op2
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Femap 11 External Results Files
Attach multiple databases
File / Attach to Results…
.modfem
.op2
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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
Page 12© Siemens AG 2013. All rights reserved.
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Femap 11 External Results Files
International Space Station Laboratory Module188,935 Nodes184,592 ElementsOutput 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
>6x faster >20% faster
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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
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Femap 11NST External Results Example
Railway vehicle extrusion panel Advanced Nonlinear (SOL 601)
13,822 nodes 13,951 elements Model size without output: 6.968 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
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Femap 11NST 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
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Femap 11Graphics 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
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Femap 11Graphics 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.
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Femap 11Graphics 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
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Femap 11Graphics 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 10.3.1/64 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 10.3.1/64 with no vertex arrays 1213ms, in dev 64 release 270ms (4.5 times faster)
640,000 quad4 elements Model 3 in 10.3.1/64 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 10.3.1/64 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
*AMD v3900 card
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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
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Femap 11 Graphics Performance Improvements
Benefits Increased productivity with faster graphics performance Dynamic rotation of large models >5x faster using VBOs
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Femap 11Working 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
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Femap 11Create 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
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Femap 11Create Geometry from Mesh
Workflow:
Import FEA input file…
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Femap 11Create Geometry from Mesh
Workflow:
Create surfaces from patches of elements using Femap’s selection methods…
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Femap 11Create Geometry from Mesh
Workflow:
Stitch the surfaces together…
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Femap 11Create Geometry from Mesh
Workflow:
Add cutouts, stiffener locations, whatever modifications are required…
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Femap 11Create Geometry from Mesh
Workflow:
Re-mesh the geometry to create a new FE model
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Femap 11Create 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
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Femap 11External Superelements
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
Superelement(SEID=70)
Residual Structure(SEID=0)
K, M B, P
70
0
Reduce upstream SEs to residual structure
Perform analysis on residual structure
Data recovery of upstream SEs
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Femap 11External 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
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Femap 11External Superelements
What is an external superelement?
Matrix representation of a componentor substructure: [K], [M], [B], {P}
Transfer model representation without compromising confidentiality – no geometry or FE model data included
Winglet Model
Common node attachment points
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Femap 11External Superelements
Winglet External Superelement
Winglet: create external superelement
Transfer SE data to wing OEM
Wing: attach the external SE in the assembly run
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Set up the creation of external superelements Creates the EXTSEOUT and ASSIGN statements Creates SPOINT/QSET entries on the fly for modal analysis (CMS)
Femap 11External Superelements
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Femap 11External Superelements
Set up for the inclusion of external superelements in subsequent assembly runs (Superelement license required) Automatically creates the ASSIGN statement
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Femap 11NX 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
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Femap 11External 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
Page 38© Siemens AG 2013. All rights reserved.
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Femap 11XY 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
Page 39© Siemens AG 2013. All rights reserved.
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Femap 11Streamlined 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
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Femap 11Streamlined XY Plotting
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Femap 11Streamlined 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
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Femap 11Streamlined XY Plotting
Benefits Increased productivity
Easier creation of XY plots Faster and easier comprehension of analysis results Easier report creation
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Femap 11NX 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
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Femap 11NX 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
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Femap 11NX 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 loadingBenefit More detailed stress recovery
in and around bolt locations
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Femap 11NX 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
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Femap 11NX 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
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Femap 11NX 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 ontoelements
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Femap 11NX 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
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Femap 11NX 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
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Femap 11Customer Driven Enhancements
Mesh edge split Easy mesh splitting
by selecting two nodeson an element edge
Split propagates through the model maintaining a contiguous mesh
Define limit split regions to controlmesh splitting
Splits hexa and penta solids,shells and beams
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Femap 11Customer Driven Enhancements
Mesh splitting: shell and beam model Automatically splits any beams encountered
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Femap 11Customer Driven Enhancements
Global plies Automatically create
global plies as you are creating a layup
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Femap 11Customer 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
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Femap 11Customer 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
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Femap 11Customer 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
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Femap 11Customer 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.
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Femap 11Customer Driven Enhancements
Redesigned Select Postprocessing Data dialog Filters added to aid output set and vector data selection
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Femap 11Customer Driven Enhancements
Results enveloping Quick results envelope creation directly from the Model Info tree
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Q and A