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High Frequency NVH
High frequency NVH is an implementation of Statistical Energy Analysis (SEA), and is used to predict and analyze the vibration and acoustic response of complex dynamic systems.
Analyze
Apply excitations, analyze the model, and post-process the results.
Diagnostic Options
Display analysis results in a 2D plot.
Excitation Contribution

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What's New
View new features for HyperMesh NVH 2025.1.
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Learn the basics and discover the workspace.
Tutorials
Discover NVH functionality with interactive tutorials.
Full Vehicle NVH
Access the Assemble, Analyze, NVH Tools, NVH Post, and Physics AI ribbons.
High Frequency NVH
High frequency NVH is an implementation of Statistical Energy Analysis (SEA), and is used to predict and analyze the vibration and acoustic response of complex dynamic systems.
- Supported File Formats
  File formats supported by HyperMesh NVH.
- SEAM Preferences
  Keep default configuration options and store user preferences.
- Model Building Sequence
  Follow this sequence when building a model to define all necessary components.
- User Interface
- Model
  Build models.
- Analyze
  Apply excitations, analyze the model, and post-process the results.
  - SEA Excitations
    An excitation is generated from an input load. An excitation acts on an SEA subsystem or junction, whereas an input load acts on a SEAM element or connection.
  - Analysis
    Use the Analysis tools to run the model and analyze the results.
  - Plot
    Plot responses from the analysis.
  - Diagnostic Options
    Display analysis results in a 2D plot.
    - Derived Response
      Derive a calculated response.
    - Energy Flow
    - Excitation Contribution
    - NCT Effect
    - Windowing Effect
    - Plot Results Using Subsystems
      Plot results using subsystems in the modeling window.
  - Transmission Loss
  - DOE
    Perform DOE analysis.
- High Frequency NVH Workflow
  Follow the order of these tasks to successfully import, visualize, and post-process an XML model file using high frequency NVH and SEAM.
- Glossary
- SEAM Reference Manual
Squeak and Rattle
Create and evaluate evaluation lines and optimize interfaces to eliminate squeak and rattle issues.

Excitation Contribution

In a defined load case, the Excitation Contribution option identifies the contribution of each excitation individually in each load case, helping you to identify the dominant excitation in the load case.