02/21/2012

Altair Engineering announced the release of NVH Director, the first commercial software tool that makes full-vehicle noise-vibration-harshness (NVH) simulation possible in the most advanced and streamlined form. NVH Director employs Altair’s Hyperworks suite of CAE tools in a fully integrated, user-friendly, customizable form to automate the tasks involved in NVH analysis.

By integrating the entire process of meshing, assembly, loadcase setup, and post-processing, it dramatically reduces the full-vehicle NVH simulation time, freeing CAE engineers to focus on optimizing product design and performance.

The solution introduces a new object-oriented environment for true full-vehicle NVH simulation. This environment enables users to manage subsystem representations, 3D display, FE entity ID numbering, connection properties and assembly definition in a modularized manner for ease of handling and debugging.

NVH Director leverages advanced technologies, such as browser, connector, process manager, object-oriented assembly and model templates to achieve a superior user experience. It also includes highly specialized functionalities to simplify NVH simulation tasks, such as:

* Meshing of the acoustic cavity and coarse display model
* Subsystem model dynamics reduction to component mode synthesis (CMS) superelement and frequency response function (FRF) representations
* Support for analysis using mixed FE and reduced representations
* Templated lumped parameter models
* Joints modeling using enhanced CBUSH elements
* NVH local coordinate systems creation
* Templated loadcase and guided, step-by-step, process-driven loadcase creation
* Post-processing and diagnostics, with an integrated approach to visualizing results

Altair’s new solution advances NVH analysis by facilitating the modeling of all vehicle subsystems, including trimbody, powertrain, suspension, steering system and torque paths. Furthermore, it operates based on real-world events, directly simulating customer usage experience to drive physical-prototype development and to identify problems related to specific loadcases and response.

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