What's New

View new features for Engineering Solutions 2020.1.

NVH Director 2020.1 Release Notes

Highlights

  • Configuration Management
  • E-Motor NVH Post-Processing

New Features

Configuration Management
New feature to create configurations and assign modules to the configuration which are unique to that configuration. All of the common and unique modules along with connections in a specific configuration are loaded in the session when a particular configuration is selected. The Analysis Manager is enhanced to create and manage configuration specific loadcases. This feature allows you to easily generate and maintain different model variants with a user-friendly interface, and direct interaction with other features like the Analysis Manager and network view.
E-Motor NVH Post-Processing
New feature in Order Cut Analysis utility to plot the waterfall diagram and perform order cut analysis of electro-magnetic forces acting on stator teeth of an e-motor. There are also advanced options to display force vector animations and distribution across stator teeth for these electro-magnetic forces. This allows you to characterize e-motor loadcases with respect to critical frequencies, order contents and magnitude of excitations for further diagnostics of critical e-motor NVH responses.
Mounts Optimization
New feature for optimizing the mount stiffness and layout configuration for decoupling powertrain rigid body modes and reduce vibration transmission. This allows for easy creation and submission of optimization set-up by defining objective of decoupling rigid body modes, creating constraints for rigid body mode frequencies and specifying design space for variables in terms of mount stiffness, locations and inclinations.

Enhancements

Network View
Docking of network view allowing seamless interaction between assembly view, graphics view and network view
Option to select configurations
Option to realize connections
Option to get information on mass of modules and connections
Option to prepare module
Option of subsystem analysis
Color palette for advanced connections
Connections
Option to realize/unrealize connections for selected connections in the Connection Browser.
Option to auto select only failed and/or unrealized connections.
Assembly XML Import Performance
Significant performance improvement in the assembly XML import resulting from improvements in template import performance.
Performance improvement in on-the-fly diagnostics computation
Significant performance improvement in on-the-fly-diagnostics calculation of modal contributions, panel participation and transfer path analysis for standard loadcases of road inputs and powertrain inputs.

Resolved Issues

  • Issue related to modified MAC calculation.
  • Issue in node pairing with selected node sets for MAC calculation.
  • Issue in export of identified nodes in UNV files from FRAC utility.
  • Issue in Packing the Assembly model with tire models not specified in the Tire Patch Points Manager.

Aerospace and Marine 2020.1 Release Notes

Highlights

Stress tool enhancements
  • New beam configuration
  • Chaining of methods
  • Dockable browser
  • Improved contouring

New Features - Stress Tools

Beam Config
New design point config beam is available with three types: beam, beam member and beam shell. The latter supports the free body section as a design point that enables you to perform beam certification methods on shell elements.
Two methods are shipped with the installation: Beam Compressive Crippling f σ x <   0 ,   M S = σ x / F c c − 1 ;   w i t h   F c c =   F c y * ( 1 −   K c r i p p l i n g * ( L ’ / p ) / π * s q r t ( E / F c y ) ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaaeaaaaaaaaa8 qacaWGMbGaeq4Wdm3damaaBaaaleaapeGaamiEaaWdaeqaaOWdbiab gYda8iaabccacaaIWaGaaiilaiaabccacaWGnbGaam4uaiabg2da9i abeo8aZ9aadaWgaaWcbaWdbiaadIhaa8aabeaak8qacaGGVaGaamOr a8aadaWgaaWcbaWdbiaadogacaWGJbaapaqabaGcpeGaeyOeI0IaaG ymaiaacUdacaqGGaGaam4DaiaadMgacaWG0bGaamiAaiaabccacaWG gbWdamaaBaaaleaapeGaam4yaiaadogaa8aabeaak8qacqGH9aqpca qGGaGaamOra8aadaWgaaWcbaWdbiaadogacaWG5baapaqabaGcpeGa aiOka8aacaGGOaWdbiaaigdacqGHsislcaqGGaGaam4saiaadogaca WGYbGaamyAaiaadchacaWGWbGaamiBaiaadMgacaWGUbGaam4zaiaa cQcapaGaaiika8qacaWGmbGaaiygGiaac+cacaGGWbWdaiaacMcape Gaai4laiabec8aWjaacQcacaWGZbGaamyCaiaadkhacaWG0bWdamaa bmaabaWdbiaadweacaGGVaGaamOra8aadaWgaaWcbaWdbiaadogaca WG5baapaqabaaakiaawIcacaGLPaaacaGGPaaaaa@774F@ and Beam Axial stress f σ x >   0 ,   M S   = σ x / F t u − 1 ;   i f σ x <   0 ,   M S   = σ x / F c y − 1 MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaaeaaaaaaaaa8 qacaWGMbGaeq4Wdm3damaaBaaaleaapeGaamiEaaWdaeqaaOWdbiab g6da+iaabccacaaIWaGaaiilaiaabccacaWGnbGaam4uaiaabccacq GH9aqpcqaHdpWCpaWaaSbaaSqaa8qacaWG4baapaqabaGcpeGaai4l aiaadAeapaWaaSbaaSqaa8qacaWG0bGaamyDaaWdaeqaaOWdbiabgk HiTiaaigdacaGG7aGaaeiiaiaadMgacaWGMbGaeq4Wdm3damaaBaaa leaapeGaamiEaaWdaeqaaOWdbiabgYda8iaabccacaaIWaGaaiilai aabccacaWGnbGaam4uaiaabccacqGH9aqpcqaHdpWCpaWaaSbaaSqa a8qacaWG4baapaqabaGcpeGaai4laiaadAeapaWaaSbaaSqaa8qaca WGJbGaamyEaaWdaeqaaOWdbiabgkHiTiaaigdaaaa@602B@ .
Chain Methods
A method can take its arguments as a result from a previous method. This enables you to chain methods one after the other and include some sorting, either spatial aggregation or loadcase enveloping.
Restriction: JointLoad method for Rivet is not valid for method chaining in this release.

Enhancements

Dockable Certification Browser
Aerospace > Certification > Certify is changed to Aerospace > Certification > Certification Browser and is now an (un) dockable browser.
Contouring Method
Enhanced contouring user interface to support sorting options. Depending on the method output and design point config, the following values are available: per loadcase, per layer and on element vs on design point.
Loadcase and layer selection, if applicable, can be set to Envelope. The sort key (min|max|absmin|absmax) will be applied to perform aggregation lively on contour. Similarly, if method output is per element but you select the Entity Column as DDP aggregation is performed using the same sorting key.
Restriction: Only one key is valid for all aggregations at a time.
Consolidated Table
Whenever multiple methods are assigned to a design point set, a consolidated table is added to find most critical methods per location. Method registration needs to tag one output as Margin of safety to be considered as a comparison key and be registered in the consolidated table. Contour invoked from design point set level will select the consolidated table. The sort key will be used to compare method MS.
API to run method on mark of element
The *rundesignmethod API can now run a method directly on a mark of element without design points.
*rundesignmethod designpointmethods id=$methodid \
targetentitytype=elements\
targetentitymark=$markid\
loadcaselist=$strLoadCases

NVH Director 2020 Release Notes

Highlights

  • Spindle Loads
  • Subrange and Overflow
  • Frequency Response Assurance Criterion (FRAC)
  • PreTest and Driving Point Residue (DPR)
  • Engine Mounts Optimization

New Features

Spindle Loads
New feature for prediction of spindle loads integrated into the Analysis Manager. Spindle forces are calculated from experimentally measured operational spindle accelerations data and spindle structure FRF characteristics from the finite element vehicle model using inverse frequency response function (IFRF) method. These spindle forces are converted to principle vectors or random loads to be applied as forcing functions to the finite element vehicle model. This method is an alternative loadcase for Road NVH in absence of tire patch points excitations and reliable tire models.
Subrange and Overflow
New Subrange and Overflow features in the module ID management. Subrange allows flexibility in reserving IDs for SPOINTs, tagpoints and plotels anywhere within a module ID range. Overflow allows IDs for FE entities to overflow the assigned module ID range but still validate the module for reduced model (CMS-SE and CDS-SE) creation and use it in residual runs from the Analysis Manager.
PreTest and Driving Point Residues
New feature for prediction and optimization of the sensor locations (accelerometers) for measurements and directions along with test excitation point location, a very important step in the experimental modal analysis process directly affecting the accuracy of test results. There is a new option in the Model Correlation utility that has options to select the grids or import from the template .csv file for pre-test and driving point residue (DPR) calculations. The selected grids can be exported in CSV and UNV files.
Frequency Response Assurance Criterion (FRAC)
New feature for comparing two frequency response functions (FRFs) representing the same input-output relationship. This is used for comparing the strength of correlation between CAE and test FRFs. There is a new option in the Model Correlation utility that has options to select the FRF result files and calculate FRAC.
Powertrain Mounts Optimization
New feature for predicting powertrain rigid body modes frequencies and kinetic energy distribution which plays a critical role in optimizing the mount stiffness and layout configuration by decoupling powertrain rigid body modes and reduce vibration transmission. Powertrain mounting systems control the overall motion of the powertrain and maintains the position of the powertrain in the vehicle as it is subjected to inertia and torque reaction loads.

Enhancements

Advanced Connections
ID Forcing
Support for multiple sample analysis
Symmetry support
Center of Motion (CoM) support for AutoTPA
Parametrization of hydra mounts
NVHD ID Manager
GUI redesign of NVHD ID Manager for easy view and understanding of the module ID content. The ID range status shows the outliers possible to be tolerated and what has to be renumbered.
Resvec for Viscous damping elements
Enhancement in the Analysis Manager in identifying modules and connections with viscous damping elements, create a set of them and write RESVEC card for it in the solver deck on creating a job or export of solver deck.
Prepare Module
Enhancement in preparing representation FE files with sub includes. This allows SPOINTs validation for the module representation file with sub includes and creates reduced models.
NVH Preferences
Option to specify request for element force output.
New Module ID tab to specify subrange for tagpoints, plotels and spoints.
Tire Patch Points Manager
Enhancement in tire patch points manager to handle tires in DMIG format.
DMIG Representation
Enhancement to support additional matrix types M2PP and B2PP for the NVH-OptiStruct user profile.
Multiple Sample Analysis
Enhancement in multiple sample analysis set-up in the Analysis Manager to show the information on number of modal and connection parameters getting randomized.
Loads MSA
Implementation of the normal distribution for imbalance distribution in loads randomization for Wheel and Tire Imbalance.
Enhancement to support for reading multiple imbalance sensitivity results (PUNCH) files (PCH).
Enhancement to perform single sample analysis for selected Loads MSA runs.

Resolved Issues

  • Issue related to performance in MAC calculation due to memory management.
  • Issue in performance of reading DSA result files.
  • Issue in randomization of damping parameters for modal models.
  • Issue in Plotel display options in switching between visualization.
  • Issue in modal animation of transformed models in the Model Correlation utility.

Aerospace 2020 Release Notes

New Features

Solid Core Geometry on Plies
Solid geometry can now be used to define the shape of the ply. This geometry can be selected manually or come from external composite data. Upon ply realization, a drape table with thickness defined spatially is created for each ply with solid geometry.
Stress Tool for Margin of Safety Calculations
The following new margin of safety and failure calculations have been added to the Stress tool (Aerospace > Certification > Certify).
  • Composite failure calculation
  • Metallic panel margin of safety calculations
The composite failure calculation is based on the Altair ESACOMP solver.
The following failure methods are supported using element running loads Nx, Ny, Nxy.


Figure 1. List of Failure Mode Selection by Assigning the Correct Material Property
The following MS safety methods are added using elemental forces. The framework allows you to add your own methods via Python, C++ or Compose (OML). Tensile, compressive, shear ultimate failure and compression-shear buckling margins are enabled.
If σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ xx > 0, MS= σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ xx/Ftu-1; if σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ xx < 0, MS= σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ xx/Fcy -1,
If σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ yy > 0, MS= σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ yy/Ftu-1; if σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ yy < 0, MS= σ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeq4Wdmhaaa@37B9@ yy/Fcy -1,
MS= τ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqiXdqhaaa@37BB@ xy/Fsu -1
MS =Fscrit/ τ MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqiXdqhaaa@37BB@ xy -1; Fscrit = π MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqiWdahaaa@37B3@ 2Ks * [E/(12*(1- v MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamODaaaa@36F1@ 2)]*(t/b)2, ks = 5.35+0.2*b2/Rt,

Resolved Issues

  • Orientation Review Tool material orientation updates. Numerous corrections to material orientations have been made in the OptiStruct, Radioss, Nastran, Abaqus and ANSYS profiles.
  • Material orientation by curve for solid elements in OptiStruct and ANSYS profiles. A local system per element is now generated to adequately capture curved orientations.
  • Detailed thickness with layers visualization in OptiStruct, Radioss, Nastran and Abaqus profiles. Previously, composite layers were shown if no ply-based template property was assigned, or an unrelated shell property was assigned.

Marine 2020 Release Notes

New Features

Beam Meshing
When geometry is exported from Marine CAD systems, you typically get additional information via .xml files on the 1D lines about how the beams were created. Beam section types, offset, material and orientations are defined on geometry lines as attributes. Meshing these beam lines, you use these attributes to create FE beams automatically with correct section types, orientation and offset. This reduces the FE model preparation time and errors.


Figure 2. CAD Attribute Based BEAM Model Creation (Type, Orient, Offset)
The standard beam cross section types support the Marine/offshore industry. The section properties are calculated and assigned to the PBEAM section for any external solvers that do not understand these types. 3D visualization is also supported.


Figure 3.