Femap_10-3_10-3-1

Siemens AG 2012. All rights reserved.

Siemens PLM Software

Femap 10.3 and 10.3.1

Whats New October 2011

January 2012



Femap 10.3

Launch Plan

Femap version 10.3

RTM & Press Release: October 5th

Shipping to customers: Late October

Femap version 10.3.1

Available late January 2012



Femap Direction

Femap continues to provide:

A modeling environment thats dedicated to FEA The in-depth, detailed functionality required to accurately model real-

world parts and assemblies

Customer driven features and functionality

Courtesy of Predictive Engineering

Courtesy of Revolution Design



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

NX Nastran aeroelasticity support for statics and flutter

Faster preprocessing through performance improvements

Improved forced response performance Improved preprocessing performance



Femap 10.3

Agenda Key Items

Automatic geometry model preparation and cleanup

Support for NX Nastran aeroelasticity

Improved Free Body diagram calculation and display

Performance improvements

NX Nastran and general Nastran support

Customer driven enhancements



Automatic Solid Geometry Preparation

Geometry and Meshing Considerations

Problematic geometry

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




Geometry and Meshing Considerations

Too much geometry detail

CAD models often contain too much modeling detail for FEA Small features that are not required for analysis Must be removed before meshing

The solution:

Femaps automatic geometry preparation capability

Greatly reduces and in many cases completely eliminates the

need for manual combination,

suppression and splitting of

geometry




Automatic clean up allows: Easier meshing of complex 3D

models with problematic

geometry

Easy removal of unnecessary detail

Geometry preparation 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




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




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 operations to be included in the cleanup process




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




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




The new automatic geometry preparation feature in Femap

10.3 takes complex geometry

that would have been

impossible to mesh in most

commercial software and

meshes it with just a few clicks.

In fact, our average speed for meshing a typical casting

model is nearly 50 times faster with this latest release.

Femap 10.3 is a true game changer in the world of meshing complex solid models.

George Laird, Principal Mechanical Engineer

and Owner, Predictive Engineering



Aeroelasticity

NX Nastran Module

Aeroelasticity

The simulation of structural models in the presence of an air stream Calculates the loads and damping from an aerodynamic model and

applies them to a structural model

Add-on module for NX Nastran and Femap with NX Nastran

Aeroelasticity is a consideration in many designs

Aerospace: airplanes, helicopters, missiles Transport: motor racing, high-speed trains Civil engineering: suspension bridges, tall buildings,

chimneys and power lines



NX Nastran Aeroelasticity

Analysis Types

Static aeroelasticity structural stresses from aerodynamic loading

and control surfaces (SOL144)

Enter basic flight characteristics, angle of attack, turn rate, pitch rate, etc.

NX Nastran calculates and applies

approximate aerodynamic loads to the

structural model

Dynamic aeroelasticity flutter analysis (SOL145) Potentially unstable and destructive vibration Aerodynamic forces interact with natural frequencies to produce rapid

periodic motion



Aeroelasticity

Femap UI Support

Panel / Body: regions of lifting

surfaces or bodies

Aero panel CAERO1 Aero body CAERO2 Properties: shape definition and

identification of interference

bodies and elements

Aero panel PAERO1 Aero body PAERO2



Aeroelasticity

Femap UI Support

Splines: interpolate between

aerodynamic and structural

grid points

Surface spline SPLINE1 Beam spline SPLINE2 Control surface

AESURF and AELIST



Aeroelasticity

Entity Visibility Control

Overall visibility control of entities and labels

View / Visibility Entity/Label tab Aeroelasticity toolbar

Visibility of individual panels and bodies

View / Visibility Aero Panel / Body Model Info Aero Model Panels / Bodies

Visibility of individual Aero Splines and

Control Surfaces

View / Visibility Aero Spline / Control Surface Model Info Aero Model Splines Model Info Aero Model Control Surfaces



Aeroelasticity

Analysis Control

Aerodynamic data

AEROx, MKAEROx

Trim parameters

Flutter parameters

FLUTTER, FLFACT



Aeroelasticity

Benefits

Easier to use Femap UI support makes aeroelasticity models easier to create

Time savings Preprocessing and creation of models is much faster

Increased accuracy Visual verification of aero model creation reduces modeling errors



Aeroelasticity

Ive worked with several Nastran aeroelasticity pre-processors and based on my experience, Femap 10.3 is clearly the best.

Eric Martin, Project Engineer, ATA Engineering, Inc.



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



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



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 should be selected prior to analysis

Free body displays can be made using a combination of output

requests



Free Body Display

Creating free bodies

Add Freebody icon in the Freebody Tool

Model / Output / Create Freebody menu



Free Body Display

Two modes of Free Body creation

1. Free Body Only mode

Simplest method for displaying free body diagrams

User selects 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



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



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



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



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



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



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



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



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



NX Nastran 8

Element Enhancements

Plane stress / strain elements Previously plane stress and strain were

modeled using options to standard shell elements

Enhancements: New plane stress CPLSTS and plane

strain CPLSTN elements can now be used in all linear structural solutions require PPLANE physical property

2D edge traction load PLOADE1 for plane stress and strain

Benefit: Simpler creation of 2D solid models



NX Nastran 8


Nonlinear Material for Nastran solutions 106 and 129 Previously solid elements in nonlinear static and transient had limited

support for material nonlinearity Enhancement: Parabolic HEXA, and PENTA elements support elastic-plastic

materials Benefit: Removes restrictions to solid models in SOLs 106 and 129

Element Number of

Grids

Geometric Nonlinear

Conditions

Material Nonlinear Conditions

Plasticity, Nonlinear

Elastic, Creep Hyperelasticity

CHEXA 8 X X X

9 20 X X (new) X

CTETRA 4 X X X

5 10 X X X

CPENTA 6 X X X

7 15 X X (new) X



NX Nastran 8


Total strain output in nonlinear static and transient Previously strain output for SOL 106 (nonlinear static) and SOL 129

(nonlinear transient) only reported mechanical strain

Enhancement: Strain values are now the total strains Total strain = mechanical strain + thermal strain

Can be turned off with SYSTEM(500)=1

Benefit Clarifies strain results for nonlinear solutions and becomes consistent

with other solutions



NX Nastran 8

Connection Enhancements

Linear Contact Enhancements: Support contact for automatic inertia relief solutions Automated static condensation (PARAM, CNTASET) Large Model performance improvements

Benefit Contact can now be used for loads on free-free structures

Glue Connection Enhancements: Glue traction output (BGRESULTS) Improved accuracy for connected surfaces with very small separation Performance improved for models with a very large number of

element connection faces Benefit Loads carried by glue connection can be viewed in Femap



NX Nastran 8

Advanced Nonlinear Enhancements

Enhancements for materials and loadings New viscoelastic material models MATHEV to specify a viscoelastic effect for a hyperelastic material MATVE and TABVE to specify a viscoelastic effect for a non-

hyperelastic material

MATHEM to specify Mullins effect with hyperelastic material stiffness changes with load cycles

Combined creep with elastic/plastic strain



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



Femap 10.3


Geometry Solid Embed Multiple solids can be embedded into one base solid simultaneously

Benefit Easier to edit and manipulate solid models



Femap 10.3


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



Femap 10.3.1 Whats New


January 2012



Femap 10.3.1

Entity Visibility Show / Hide Reverse

Switch displayed and hidden entities with a single click

Faster and easier control of displayed and hidden entities

Single click to reverse entity display



Femap 10.3.1


View Visibility dialog Tabs: Geometry, Coord Sys,

Material, Property, Aero spline /

control surface, Layer

Model Info tree Visibility checkbox: Coordinate

Systems, Geometry, Regions,

Connectors, Aero Model,

Elements, Materials, Properties,

Layers



Femap 10.3.1


Select toolbar context sensitive Visibility sub-menu

Appears (graphics area right-click or shift key + right-click) when any of the

following are active

Solid, Region, Connector, CSys, Material, Property

Show / hide visibility control Selected entities All entities Reverse display



Femap 10.3.1

Select Toolbar Group Functions

Add, remove or exclude entities to any existing group no longer limited to the active group

Easier and faster group modification and creation



Femap 10.3.1

Coincident Nodes Move Only

Nodes within the coincident node tolerance can be moved to be truly

coincident without merging, facilitating definition of truly coincident nodes

Higher ID to lower Lower ID to higher Both to the mid point



Femap 10.3.1

Random Entity Color

Random button in the Modify Color dialogs

Geometry and FE entities including Property and Material Assign by ID (including bands of IDs), entity type, or group

Random entity color assignment banded element IDs



Femap 10.3.1

Entity Contour, Criteria and Beam Diagram Plots

View / Advanced Post / Contour Model Data function

Create contour, criteria and beam diagram plots based on entity IDs Element, material and property

Visually verify ID assignment and model organization

Element ID criteria plot



Femap 10.3.1

Results Data Ranking

Rank Output Data to Data Table

Rank: selected output sets with output vectors on selected entities Method: sets for each entity or entities for each set Approach: vectors together or independently Rank by: node, element, property and

material

Ranking type: max or min value or max absolute type



Femap 10.3.1

Free Body Updates

Load generation from free body displays

Model / Load / From Freebody command Create loads from multiple free bodies across multiple output sets



Femap 10.3.1

Free Body Updates

Select Free Edge Nodes button in the Freebody Postprocessing Toolbox

Easy selection of free edge nodes of selected elements for the Interface Load display mode

Select Free Edge Nodes



Femap 10.3.1

Free Body Updates

Force Balance Interface Load Summary

List Output menu Summarize and list interface loads Create functions and display XY plots of: Loads / moments vs. output sets for a

single free body

Loads / moments vs. free body ID or X, Y, Z location for a single output set



Femap 10.3.1

Meshing Updates

Custom Mesh Spacing Along Curve

dialog box

New Delete All button

Property definition for Mesh Copy/

Radial Copy/ Scale/ Rotate/Reflect

Element commands

Match Original default Refer to other existing

property

Create new property on the fly



Femap 10.3.1

NX Nastran

NX Nastran

NX Nastran 8.1 is included in Femap with NX Nastran bundle

Femap_10-3_10-3-1

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