What's New
View new features for NVH 2022.1.
NVH Director 2022.1 Release Notes
Highlights
- Deterministic Optimization Workflow
New Features
- Deterministic Optimization Workflow
- The Deterministic Optimization Workflow is a very powerful, efficient end-to-end workflow for pre-processing, solving, and post-processing. In the Analysis Manager, Deterministic Optimization defines the optimization setup for the selected analysis. Use this option to create design variables for materials, gages, connections, and modal parameters. There are options to create design responses, constraints, and objectives for the user-defined loadcases, and submit the optimization to OptiStruct. You can save the complete optimization setup in an Assembly XML file for review and reuse. A new post-processing utility post-process the optimization results.
Enhancements
- NVH Preferences
- The NVH preferences supports team preferences and user preferences, providing efficient and seamless coexistence and usage of team and user preferences from a single preference file.
- Model Correlation
- Support for LCS from test UNV files in MAC calculation.
- U-joint Connection
- Support to specify plunging mass in U-joint connections.
- Workflow Improvement
- Workflow improvements for usability when creating and handling local coordinate systems, response point manager, frequency set manager, batch modal check, and batch model reduction.
Resolved Issues
- Solving MAC optimization in Linux.
- Plotting DSA results in Integrated Diagnostics.
- Generating responses for *.odb file in Modal FRF.
- Selecting a few modes in CMS modes for MSA.
NVH Director 2022 Release Notes
Highlights
- Optimization in Model Correlation
- Flexible Rim Support in CDTire
- Non-linear stiffness (Force Vs Deflection and Frequency Vs Stiffness) of engine mounts in Mounts Optimization
New Features
- Optimization in Model Correlation
- New option in Model Correlation utility to set-up optimization set-up for model updating of the simulation model to improve the correlation. Poor modal correlation between test-simulation results can be possibly improved by updating the simulation model. The new option of optimization allows you to create design variables in the simulation model, specify relevant objectives and constraints for the necessary correlation values and submit the optimization run.
- Flexible Rim Support in CDTire
- New option to consider flexible rim in CDTire handling. This advanced feature automatically creates connection between CDtire and Flexible rim, and allows you to study the effect of rim dynamics on NVH responses.
- Non-Linear Stiffness (Force Vs Deflection and Frequency Vs Stiffness) of engine mounts in Mounts Optimization
- New feature to specify non-linear stiffness of mounts in terms of Force Vs Deflection or Frequency Vs Stiffness in Mounts Optimization utility. This allows you to simulate real-life stiffness behavior of engine mounts for prediction for mount displacements and reaction forces for different operating conditions.
- General Signal Processing for aero-acoustics simulations
- New feature for general signal processing to predict NVH responses for aero-acoustic usecases.
Enhancements
- Mounts Optimization
- Enhancements in defining stiffness based constraints for engine mounts optimization in addition to existing frequency based constraints.
- Model Correlation
- Enhancement to support test UNV files with modal results partial directions by automatically identifying the directions with result data and use it for calculation of MAC.
Resolved Issues
- Issue in identifying the subcase IDs in order cut analysis for result files from optimization run.