what’s new in femap · 2019-06-13 · of femap, nastran and fibersim • if we don’t know the...

5/22/2012

What’s New in FEMAP

v2019.1

David Cross

703-673-1125

[email protected]

5/22/2012

STRUCTURES.AERO

FEMAP v2019.1 Overview

– Background of Structures.Aero

– Demonstration

– New functionality and updates

– UI and visualization

– Preprocessing

– Meshing

– Solver support

– Postprocessing

– Miscellaneous

5/22/2012

STRUCTURES.AERO

Structural Analysis

• We are a group of 14 engineers that help our

clients design lightweight and load efficient

structures.

• We support aerospace companies and other

industries that require high level analysis.

• We specialize in composites and lightweight

structures

• Tools used include hand analysis, HyperSizer,

Femap, NX Nastran, Fibersim, NX CAD, Solid

Edge, Simcenter 3D, LS Dyna, and LMS.

Value Added Software Reseller

• Value added reseller providing software, training,

and support for products we use on a daily

basis.

• Support for Femap, NX NASTRAN, Simcenter

3D, Fibersim, NX CAD, Solid Edge, and

HyperSizer.

Who is Structural Design and Analysis?

5/22/2012

STRUCTURES.AERO

Our Engineers

• 14 Engineers

• PhD, MS and BS Degrees

– 1 Doctorate

– 2 Master’s

– 11 Bachelors

• Aerospace, Mechanical and Engineer

Science and Mechanics

• 11 Engineers from Virginia Tech

• All are experts at FEMAP and use

FEMAP and NASTRAN every single day

5/22/2012

STRUCTURES.AERO

Space

- Composite Crew Module for NESC

- Orion Heatshield for NESC

- Lockheed Orion Crew Module

- Lockheed Orion Service Module

- WFIRST Telescope for NASA Goddard

- Blue Origin – New Glenn

Aircraft

- Piper M600 Wing

- Airbus Vahana Quad

VTOL

- Commuter Craft

experimental Aircraft

- TSC SpaceShipTwo

Some recent projects

UAV

- AAI Aerosonde

- AAI Shadow M2

- Aurora VXP

- Amazon Prime Delivery

Drone

- Vanilla VA001

Other Projects

- Hagler Dredges

- Augusta, GA Canal Gate

- TLD

- Ground Air Support

5/22/2012

STRUCTURES.AERO

• We specialize in providing Expert support

of FEMAP, NASTRAN and Fibersim

• If we don’t know the answer, we go direct

to the writers

Monthly Webinars

Siemens Value Added Reseller

• Fibersim

• NX CAD

• Solid Edge

• Femap

• NX Nastran

• Simcenter 3D

CAE and CAD software

Training

• Introduction to Femap with NX Nastran

• Advanced Femap with NX Nastran

• Fibersim

Learning Femap by Eric Gustafson

Support

Restricted © Siemens AG 2019

April 2019 Siemens PLM Software

UI and Visualization

MODFEM Preview and Tooltips

MODFEM Preview

MODFEM Tooltips

Registers DLL to provide:

• FEMAP model image at last save

• Basic model information tooltip

• Version

• Size

• Save date

• Number of entities

• FEMAP notes




Updates to Standard Entity Selection

Reset button is now an icon button (Red Circle with White “X”)

Select Visible icon button: Selects all entities of selected type which are “Visible” in the

graphics window – “visible” entities are:

• Not hidden by any setting for Visibility (i.e., overall entity type; individual entity; elements

based on type or shape; or elements which reference hidden materials and/or properties)

• Not hidden by the Draw/Erase Toolbar in any way

• Displayed based on the current Group display settings

• On a visible Layer

Note: If entities are visible after using View -> Autoscale -> Visible, they are considered ‘Visible’

(i.e., if entities are off screen due to zoom or pan, they are still selected)




Updates to Standard Entity Selection

Select Visible Only option on Pick^ menu

When enabled, other options in this section of the Pick^ menu will also

only select “visible” entities or add “visible” entities to the current selection

• By Size (Curves, Surfaces, and Solids only)

• By Color

• By Model Data

• By Output (Elements and Nodes only)

• Add Connected Elements and Add All Connected Elements

• Add Connected Fillets and Add Tangent Surfaces (Surfaces)

• Add Connected Tangent Curves

The Select Visible Only option is a model-based setting which can also

be enabled/disabled via the Select Toolbar



Preprocessing

Load/Constraint/Region Propagation with Geometry Splitting

Existing geometric based entities are now propagated during

geometric split operations

• Loads

• Boundary conditions

• Regions



Preprocessing

Solid Data Tracking

Solid data tracking:

• Color/Layer

• Attributes

• Loads

• Constraints

• Regions

Example

4 Solids – linear contact

Loaded

Constrained

Different colors

Different layers

Solid slice – all propagated



Preprocessing

Bearing Force and Torque on Curve

Bearing Force on Curve – similar options to

Bearing Force on Surface

Torque on Curve – similar options to Torque

on Surface



Preprocessing

Point and Node Projection

New options for Modify -> Project -> Nodes

and Modify -> Project -> Point commands

• Project radially about axes

• Project spherically about point



Meshing

Mesh Sweep Element and Element Face

• New option in Sweep: “Along Element Edges”

• Choose elements to sweep first, then edges of

planar or solid elements to sweep along

• Single edge pick defines direction

• Sweeps until an end is reached, or connecting

back on itself

• Option to specify a “stop” node

• Mesh “morphs” to match existing mesh edges



Meshing

Mesh Sweep Element and Element Face

• “Mesh morphing” explained:

the sweep path defines the fixed

node locations, the remaining

nodes are parametrically mapped

to match the original mesh



Meshing

Mesh Sweep Element and Element Face and Edge

• Beams and plate edges sweep to plates

• Plates and solid faces sweep to solids

Beams sweep

into plates

Element edges

sweep into plates



Meshing

Hex to Tet Pyramid Transitions

• Pyramid elements automatically

generated to transition from hexas

to tetrahedrals

• New node matching options

• Select additional areas to create

pyramid elements



Meshing


• Defaults – linear brick/wedge mesh, parabolic tetra

mesh transition

• Brick is linear – 8 nodes

• Tetras are parabolic, with midside nodes dropped for

brick connection

• Pyramid is parabolic with base midside nodes dropped

CTETRA 82 1 252 1882 1861 20107 254 +

+ 255 47449 72908

CHEXA 7748 1 1862 1861 8748 8733 1883 1882+

+ 8931 8916

CTETRA 25196 1 1882 16328 1883 20107 47448 41182+

+ 47449 47450 47451

CPYRAM 38619 1 1882 1883 1862 1861 20107 +

+ 47449 47451 62823 72908

CTETRA 52851 1 1861 20107 1862 20586 72908 62823+

+ 49988 62822 49989

CTETRA 63090 1 1862 20107 1883 18950 62823 47451+

+ 62824 62819 51378



Meshing


Hex-meshable regions can be defined on

interior of solids to further reduce total DOF



Meshing


Pyramids can connect to any surface

quad mesh to transition to tetras



Meshing

Mixed Linear/Parabolic Connection Tool

• Tool to connect mixed linear and parabolic elements

• Remove midside node on parabolic side to connect

• Add midside node and make element parabolic on the

linear side to connect

• In this example hex element is originally linear, while

tetras and pyramids are parabolic, then auto connected

• Interface bricks become parabolic with connected

midside nodes



Meshing

Mixed Linear/Parabolic Connection Tool

• Works with shell meshes and mixed

beam, shell, solid

Example:

• Small patch made parabolic

• Modify / Update Elements to connect

linear and parabolic elements

• Connected linear shells become

parabolic, with just the one midside node



Meshing

Element Extrusion – New Options

Along Normals to Surfaces option



Meshing

Element Extrusion – New Options

Extrude in Both Directions at once



Solver Support

Simcenter Nastran

FEMAP v2019.1 includes Simcenter Nastran v2019.1

SOL 200 improvements

• DESOBJ improvements to resolve multiple subcase responses

SOL 401 improvements

• Bolt preload now allows 1D bolt elements (CBAR,CBEAM)

• Support for PCOMP and PCOMPG

• Transient dynamic subcase

• Contact improvements – various improvements for robustness

Performance enhancements

• RDMODES – various numerical improvements

• SMP parallel has added Element Matrix Assembly (EMA) module

• Frequency response numerical improvements automatically selected



Solver Support

Simcenter Nastran SOL 401/402

New subcase types in SOL 401/402

• Nonlinear dynamics

• Linearized buckling

• Arc-Length methods in statics

Subcase 1 - Nonlinear Pre-Stress/Pre-Stiffen Subcase 2 – Sequentially Dependent Saw Tooth Shock

Pressure and Resulting Transient Response



Solver Support

Nastran SOL 200 Design Optimization

SOL 200 Design Optimization

• Now supports frequency

response analysis

• Similar setup to statics and

modal

INIT MASTER(S)

NASTRAN SYSTEM(442)=-1,SYSTEM(319)=1

ID FreqOpt,Simce

SOL DESOPT

CEND

ANALYSIS = DFREQ

DESOBJ(MIN) = 4

DESSUB = 7

TITLE = Simcenter Nastran DesTopOpt Analysis Set

ECHO = PUNCH(BSTBULK)

DISPLACEMENT(PLOT) = ALL

SPCFORCE(PLOT) = ALL

OLOAD(PLOT) = ALL

FORCE(PLOT,CORNER) = ALL

STRESS(PLOT,CORNER) = ALL

SPC = 1

DLOAD = 1

FREQUENCY = 4

BEGIN BULK

$ ********************************************************

$ Written by : Femap

$ Version : 2019.1

$ Translator : Simcenter Nastran

$ From Model : C:\Japan2018\Models\SOL200\FreqOpt.modfem

$ Date : Tue Apr 2 15:05:16 2019

$ Output To : C:\Japan2018\Models\SOL200\

$ ********************************************************

$



Solver Support

Simcenter Nastran and Preprocessing

New support for Nastran material coordinate

system on elements

Similar to plate thickness/offset being carried on

the element, solid orientation can have 1 property,

multiple orientations

Modify -> Update Elements -> Solid Material CSys

command has comprehensive options

• Element

• Csys

• Generate new CSys with multiple alignment

options

• Writes/reads Nastran MATCID card



Solver Support

Nastran SOL 105 Multiple SUBCASE with STATSUB

Set up SUBCASES with

• Preload

• Buckling load

• Multiple subcases referencing

preload and buckling load

STATSUBs

• Change constraints in STATSUB

buckling SUBCASES

INIT MASTER(S)

NASTRAN SYSTEM(442)=-1,SYSTEM(319)=1

ID SOL105,Simce

SOL SEBUCKL

CEND

TITLE = Simcenter Nastran Buckling Analysis Set

ECHO = NONE

DISPLACEMENT(PLOT) = ALL

SPCFORCE(PLOT) = ALL

STRESS(PLOT,CORNER) = ALL

BGRESULTS(TRACTION,FORCE,PLOT) = ALL

BGSET = 114

SUBCASE 1

SUBTITLE = Preload

SPC = 1

LOAD = 2

SUBCASE 2

SUBTITLE = Buckling Load

SPC = 1

LOAD = 1

SUBCASE 3

METHOD = 1

STATSUB(BUCKLING) = 2

STATSUB(PRELOAD) = 1

SPC = 1

SUBCASE 4

METHOD = 1

STATSUB(BUCKLING) = 2

STATSUB(PRELOAD) = 1

SPC = 4

BEGIN BULK



Solver Support

ANSYS Translator

Non-normal pressure read/write

• Pressure on 2-D element edge – SURF153

• Pressure on shell/solid element faces – SURF154

• Pressure on shell element edges – SURF156

Bolt pre-load support

• Beam pre-load – PRETS179

• Solid pre-load – PSMESH

• Both written as ANSYS SLOAD

Random vibration analysis type

• Read/write support for commands SPOPT, PSDUNIT, PSDFRQ,

PSDVAL, PFACT, PSDCOM

Output control KEYOPT(8) for laminates and solid laminates has

been added



Solver Support

ABAQUS Translator

Added ability to specify thermal options for gap elements

and/or contact

Accessed via the ABAQUS Thermal… button when defining or

editing a gap property or connection property (ABAQUS tab)

CONDUCTANCE section is used to specify items which write:

“GAP CONDUCTION or “GAP CONDUCTION, PRESSURE

RADIATION section is used to specify items which write:

“GAP RADIATION



Postprocessing

Aero Mesh Displacements from Flutter

Ability to display aero mesh displacement results from flutter analysis (must import from .f06 file)



Postprocessing

Contour Plots

New options for models with partial results, i.e.

contact forces/stresses

Previously, FEMAP contoured all elements,

with “0.0” assigned to nodes without results

5/22/2012

STRUCTURES.AERO

Questions?

For questions on the material covered

today, please contact David Cross.

For questions about pricing, or to see

a demo, please contact Marty Sivic.

Marty SivicDirector of Sales

[email protected]

724-382-5290

David Cross, Ph.D.Senior Aerospace Stress Engineer

[email protected]

703-673-1125

mailto:[email protected]

mailto:[email protected]

what’s new in femap · 2019-06-13 · of femap, nastran and fibersim • if we don’t know the...

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