Free Body Display
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Transcript Free Body Display
Femap 10.3
What’s New
Alastair Robertson
Femap Marketing
© 2011. Siemens Product Lifecycle Management Software Inc. All rights reserved
Siemens PLM Software
Femap 10.3
Launch Plan
Femap version 10.3
RTM & Press Release:
October 5th
Shipping to customers:
Late October
© 2011. Siemens Product Lifecycle Management Software Inc. All rights reserved
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Siemens PLM Software
Femap Direction
Femap continues to provide:
A modeling environment that’s dedicated to FEA
The in-depth, detailed functionality required to accurately model realworld parts and assemblies
Customer driven features and functionality
Courtesy of Revolution Design
Courtesy of Predictive Engineering
© 2011. Siemens Product Lifecycle Management Software Inc. All rights reserved
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Siemens PLM Software
Femap 10.3
Primary Focus and Messages
Improved productivity through process improvement
Automatic geometry model preparation and cleanup
Mesh most models first time without manual geometry cleanup
Improved free body diagram calculation and display
Increased simulation scope through discipline extensions
Support for NEi Nastran specific functionality
Faster preprocessing through performance improvements
Improved forced response performance
Improved modeling functionality performance
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Siemens PLM Software
Femap 10.3
Agenda – Key Items
Automatic geometry model preparation and cleanup
NEi Nastran support
Improved Free Body diagram calculation and display
Performance improvements
Customer driven enhancements
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Siemens PLM Software
Automatic Solid Geometry Preparation
Geometry and Meshing Considerations
Analysts inherit CAD models that often contain difficult geometry
Serviceable for CAD, but cause problems with FE meshing
Affects mesh and element quality and hence solution accuracy
Typical problems include:
Sliver surfaces
Short edges
Narrow regions
Close points
Internal voids
Difficult geometry has to be fixed before the model can be meshed
Manual geometry clean up requires much effort and time
The solution: Femap’s automatic geometry preparation capability
Greatly reduces and in many cases completely eliminates the need for
manual combination, suppression and splitting of geometry
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Siemens PLM Software
Automatic Solid Geometry Preparation
Automatic clean up allows:
Easier meshing of complex 3D
models with problematic
geometry
Easy removal of unnecessary
detail
Geometry cleanup actions
performed automatically include:
Combination of surfaces and
curves
Suppression of small curves and surfaces
Surface splitting at strategic locations
User defined tolerance controls extent of
geometry changes
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Siemens PLM Software
Automatic Solid Geometry Preparation
Prepare Geometry and Mesh sizing tolerances
Guide geometry feature removal / suppression and mesh sizing
Internal voids identified and removed
Access to further geometry preparation and mesh sizing options
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Siemens PLM Software
Automatic Solid Geometry Preparation
Full control over the extent of model simplification
Identify a group of entities that should be ignored
Entities that are loaded or constrained are ignored
Set maximum sizes and angles based on geometry preparation
tolerance
Identify individual options to be included in the cleanup process
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Siemens PLM Software
Automatic Solid Geometry Preparation
Benefits
Significant time savings with finite element model creation
Ease of use
Solid FE models are much easier to create and mesh first time
Combine with the interactive Meshing Toolbox to further tune and
enhance the mesh
Serial vs. Interactive Workflows
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Siemens PLM Software
Automatic Solid Geometry Preparation
Benefits (cont.)
Greater FE model accuracy
Removal of geometry imperfections that compromise element quality
User controls ensure there is no accidental or undisclosed model
oversimplification
Femap ensures there is no unintended loss of load / boundary
condition data
Sliver surfaces
present
Geometry healed
automatically
Model meshes first
time
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Siemens PLM Software
NEi Nastran Support
Composites Support
Additional failure theories for NEi Nastran
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Siemens PLM Software
NEi Nastran Support
Advanced Materials
Nitinol and Shape Memory Alloys supported
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Siemens PLM Software
NEi Nastran Support
Rigid Element Support for Thermal Analysis
NEi Nastran rigid element for thermal analysis now supported
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Siemens PLM Software
Free Body Display
Detailed Loads Postprocessing
Free body display
“Purest” application of FEA
providing model load transfer
at a nodal level
Provides the engineer with
detailed information about
the load distribution and
transfer in a structure
Key information for strength
analysis and design
A graphical display of this
data greatly improves
comprehension and speeds
up model postprocessing
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Siemens PLM Software
Free Body Display
Free body display completely overhauled
Added to the Postprocessing Toolbox
Direct access at a higher level
Now an object in the Femap database
Calculation options are stored so results are
reproducible
Greater control of free body
display options
Vector display
Load components in summation
Multiple free body displays
supported
Enhanced API capabilities
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Siemens PLM Software
Free Body Display
Free body data is obtained from a combination of:
Grid point force balance results
Applied loads
Constraint equation force results
Force Balance must be selected
prior to analysis
Free body displays can be made
using a combination of output
requests
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Siemens PLM Software
Free Body Display
Creating free bodies
Add Freebody icon in the
Freebody Tool
Model / Output / Create Freebody
menu
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Siemens PLM Software
Free Body Display
Two modes of Free Body creation
1. Free Body Only mode
Simplest method for displaying
free body diagrams
User select the elements
Femap picks the nodes
Free Body vectors displayed on
the nodes
2. Interface Load mode
Provides more control over Free Body display
User selects both elements and nodes
Summation vector is available
Full control of load component contribution
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Siemens PLM Software
Free Body Display
Free body entity selection
Entity select
Entities (nodes and elements)
selected through select dialog
Group select
Entities (nodes and elements)
obtained from selected group
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Siemens PLM Software
Free Body Display
Free body loads – six types available from force balance output
1. Applied loads – loads applied to nodes
2. Reaction loads – loads from SPCs
3. Multipoint reaction loads – loads from MPCs
4. Peripheral element loads – loads from elements external to the free
body
5. Free body element loads – loads from elements internal to the free
body
6. Total sum loads – summation of previous load types
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Siemens PLM Software
Free Body Display
Vector types available
Nodal forces
Nodal moments
Total sum forces
Total sum moments
Individually toggled for each
free body
Displayed as a resultant or components
Each component can be toggled on or off
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Siemens PLM Software
Free Body Display
Free body summation vector
Total summation vector available with Interface Load method
Force summation
Moment calculation of all nodal
summations at a given location
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Siemens PLM Software
Free Body Display
Free body color options
Node markers
Total force vector
Total moment vector
Nodal force vector(s)
Nodal moment vector(s)
View properties
Node markers
Symbol sizes and colors
Vector options
Length
Style
Color mode
Scale factor
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Siemens PLM Software
Free Body Display
Listing Free Body data
Force Balance
Lists data for selected nodes to the Messages pane
Force Balance to Data Table
Outputs data for selected nodes to the Data Table
Force Balance Interface Load
Lists total load summation for selected nodes / elements to the
Messages pane
Force Balance Interface Load to Data Table
Outputs total load summation for selected nodes / elements to the
Data Table
Moment arm and forces / moment contribution data can also be
included
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Siemens PLM Software
Free Body Display
Benefits
Ease of use
Free body diagrams are easier to create and recreate
Free body diagram data is easily accessed and transferred to other
Windows applications
Easily find transfer loads on the fly
Greater flexibility of free body display
Time savings
A more streamlined user interface allows free body diagrams to be
created more quickly
© 2011. Siemens Product Lifecycle Management Software Inc. All rights reserved
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Siemens PLM Software
Femap 10.3
Performance Improvements
Forced dynamic response – much better performance for large models
with many frequencies
Preprocessing improvements
Entity Editor
Meshing Toolbox
Model Info Tree
Meshing of solids that already contain some meshed surfaces
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Siemens PLM Software
Femap 10.3
Customer Driven Enhancements
Spring/Damper Element Updates
Element creation UI updated to show CBUSH or “Other”
New element symbols for CBUSH and “Other”
Benefit
Easier to work with and identify CBUSH elements
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Siemens PLM Software
Femap 10.3
Customer Driven Enhancements
Geometry Solid Embed
Multiple solids can be embedded into one base solid simultaneously
Benefit
Easier to edit and manipulate solid models
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Siemens PLM Software
Femap 10.3
Customer Driven Enhancements
New View Alignments
Align a view to a selected surface
Align a view to be normal to a specified plane
Benefit
Easier to align and position views
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Siemens PLM Software
Q and A
Thank You!
Al Robertson
[email protected]
+1 (714) 952-5506
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Siemens PLM Software