What's New

View new features for Engineering Solutions 2020.

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.

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.