Simcenter Femap version 2021.1 - Maximizing finite element analysis efficiency with enhanced meshing tools - Siemens PLM
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Simcenter Femap
version 2021.1 workflow. A large amount of functional-
ity added to 2021.1 focuses on facilitat-
ing mesh creation and modification.
First, matching mesh sizes and deter-
mining mesh propagation between dis-
connected geometric entities can be
Maximizing finite element analysis efficiency specified based on the proximity of
with enhanced meshing tools edge curves to one another. To deter-
mine where these mesh propagation
options will be enforced, tools were cre-
ated in the new mesh control explorer
Benefits Summary pane to provide visual feedback for
• Maximize finite element analysis Simcenter™ Femap™ software is a edge curves, which are fully paired, par-
(FEA) efficiency with enhanced standalone finite element modeling tially paired or unpaired, along with
meshing tools (FEM) pre- and postprocessor for other tools to visualize which surfaces
engineering simulation and analysis. are paired for solid meshing or have a
• Improve quality of a hex mesh
The software is computer-aided design surface mesh approach assigned. In
using various tools in the meshing
(CAD) independent and can import addition, multiple tools in the meshing
toolbox
geometry from all major CAD platforms. toolbox can be used to update an exist-
• Simplify user interface to display It supports most CAD data formats. ing hex mesh. Another area of
only available options for selected Simcenter Femap also works in combi- expanded capabilities is support for
solvers via analysis filtering nation with a wide variety of FEA MSC Nastran SOL 400. From a modeling
solvers, including Simcenter Nastran® standpoint, items have been added to
• Use the familiar interface and
software. specify property extensions, nonlinear
depth of functionality of Excel to
update data in the function/table Simcenter Femap, which is part of the materials and contact options designed
editor in real time or in bulk Xcelerator™ portfolio, the comprehen- for use with SOL 400. At the same time,
sive and integrated portfolio of soft- a new analysis type may be selected
Features ware and services from Siemens Digital that offers user interface (UI) elements
• Mesh control explorer pane to Industries Software, is now being to define critical and useful solver
assist in creating complex shell and released on a biannual schedule in the parameters for SOL 400. Finally,
solid meshes spring and the fall, which began with updates have also been implemented
version 2019.1 and continues with ver- for Simcenter Nastran and Abaqus.
• Customizable options for mesh
sion 2021.1. The software is now
propagation in various sizing Preprocessing enhancements
referred to as Simcenter Femap to
commands
reflect that it is a part of the Simcenter Improved entity selection
• Improved performance during portfolio of Siemens computer-aided performance
entity selection, especially when engineering (CAE) products. For the Entity selection (picking) now uses
area or front picking same reason, NX™ Nastran software is OpenMP technology to improve perfor-
now Simcenter Nastran software. mance, especially for area picking (box,
• Comprehensive support for MSC
Nastran SOL 400 to perform The latest release provides a variety of circle, polygon and freehand) and front
implicit nonlinear analysis enhancements that will improve your picking. In addition, the area within the
productivity across the simulation standard entity selection dialog box
siemens.com/simcenter
SIMCENTER
Simcenter Femap version 2021.1
where ID ranges are listed is now hid- value for the interference factor or Filtering can be done permanently via
den whenever more than 1,000 ranges proximity factor. When using the inter- the interface tab of preferences or as
containing unique IDs have been ference factor, interference is deter- needed by using this icon found in the
selected, which also improves perfor- mined when elements overlap by more individual controls.
mance. The list can be restored by click- than the given tolerance. When using
ing into the list area, then hidden again the proximity factor, interference is Simcenter Nastran
by using the hide list button. determined when elements are sepa- The Simcenter Femap 2021.1 release
rated by a gap that is smaller than the includes a relatively recent release of
Function/table editor – connecting to given tolerance. Simcenter Nastran. There is enhanced
Excel support for dynamic design analysis
Using the send to Excel functionality Meshing method (DDAM) analysis with added
introduced in v2020.2 allows data in options for mode selection, which limits
Mesh control explorer
the function/table editor to be updated modes used in the calculation based on
A new pane to facilitate mesh creation
in real time as it is the same data modi- a specified cutoff, percentage or top
has been added to the 2021.1 version.
fied in Excel or in bulk after the data has value. It can write the SELMODE entry
Available tools can be used to deter-
been modified. to the Simcenter Nastran input file.
mine if surfaces are paired using surface
Support was also added for results
mesh approaches for solid meshing, if
Midsurfacing overlap repair requested by PARAM, SHLMEM and YES,
surfaces have other types of mesh
This is an added option that can poten- which include multipoint constraint
approaches defined and/or if curves can
tially limit overlap of surfaces created at (MPC) forces, element strains and mem-
be automatically paired based on prox-
intersections where the ribs approach brane-only stresses for beams, shells
imity for shell meshing. It also allows
the intersection from various directions and composite laminates.
specifying options to use for automatic
and do not meet in a single location.
mesh propagation.
Simcenter Nastran/MSC Nastran
Geometry, curve-centerline There is added support to limit modes
This is an enhanced algorithm to better by mode number which are used when
handle more complex beam-like solids, running a modal frequency response or
including helical and swept shapes cre- modal transient analysis. It writes the
ated along complex splines. MODSEL entry for Simcenter Nastran
while writing the MODESELECT entry for
MSC Nastran.
MSC Nastran
SOL 400 overview
SOL 400 is used to perform implicit
nonlinear analysis using MSC Nastran.
Updating a hex mesh The type of analysis, statics, normal
The capabilities of the sizing and surface modes or transient dynamics can be
tools in the meshing toolbox have been changed at the subcase level or within a
improved to allow updating of a hex subcase at the analysis step level. When
mesh without having to select multiple multiple analysis steps exist in a single
curves to insure correct mesh propaga- subcase, they are always sequentially
tion on all the necessary solids. dependent, which is known as analysis
chaining.
Solver support
Analysis filtering
Analysis filtering can be used to remove
solver-specific tabs for connection prop-
erties and connection regions from the
interface, along with materials found in
Tools, check, mesh interference the drop-down for other types. This
It provides improved command by add- reduces visible UI elements to only
ing the ability to specify a tolerance those needed for the selected solvers.
SIMCENTER
SOL 400 – connection properties with boundary conditions and output PublishTool and PublishTable objects
Although many of the options on the requests can set at the master, subcase These new objects and methods are
MSC Nastran tab existed in previous ver- or analysis step level. Analysis steps can used to publish customized HTML and
sions of Simcenter Femap, support now be defined one at a time or by creating RTF reports to either the clipboard or to
exists for advanced cohesive contact a global analysis step that can then be a file. To automatically associate any
and interference options. referenced at the analysis step level. number of PublishTable objects with a
specific PublishTool Object, use the
SOL 400 – connection regions Postprocessing UserTable method to generate the
Rigid body regions can now be defined PublishTable Objects.
Solid element stress contour option
using 2D planar curves or 3D surfaces,
When this option is enabled, result val-
along with more traditional finite-ele-
ues on linear elements and parabolic
ment-based regions. In addition, the
elements that share nodes are not aver-
MSC Nastran tab can be used to specify
aged together.
friction, smoothing control and quite a
few options for rigid body regions. One typical example of when this might
occur is when a hybrid mesh has been
SOL 400 – property extensions created that transitions from linear
Property extensions to control geomet- hexahedral elements to parabolic tetra-
ric and material nonlinearity can now hedral elements via parabolic pyramid
be assigned for rod, bar, beam, plate, elements that do not have nodes on the
plane strain, axisymmetric, laminate quadrilateral face of the pyramid.
plate, solid, solid laminate and solid
cohesive properties using the define
property extension icon in the user
interface.
SOL 400 – materials
Elasto-plastic, elastic 3D orthotropic,
cohesive zone modeling, material fail-
ure, gasket and four different types of
hyper-elastic materials are now sup-
ported for use with SOL 400.
SOL 400 – analysis set manager
Nonlinear behavior, automatic contact
parameters and additional general con- Customization via API
tact parameters, such as cohesive con- AnalysisStep and GlobalStep objects
tact options, can now be specified at These new objects, associated proper-
the top level of the analysis set for ties and methods have been created to
implicit nonlinear. Control parameters allow specification of options for MSC
that are used to specify an increment Nastran SOL 400 Analysis Steps and
type, fixed, adaptive or arc-length, to Global Step programmatically. Siemens Digital Industries Software
control how the solver behaves along siemens.com/software
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