Implement component-based transfer path analysis for advancing NVH vehicle development

On-Demand Webinar | 55 minutes

Leverage measured modular component models into full-vehicle noise predictions

Graphical sketch of a concept car. Component-based transfer path analysis allows to virtually assess NVH performance.
Graphical sketch of a concept car. Component-based transfer path analysis allows to virtually assess NVH performance.

Strict environmental regulations to reduce emissions are a challenge today. New technologies, such as electrification, stop & start, increased gear ratios, and weight reduction are helping reach fuel efficiency and emissions goals. Still, they may negatively impact other vehicle attributes, such as vehicle performance and noise and vibration. In this on-demand webinar, discover how component-based Transfer Path Analysis (TPA) predicts vehicle NVH performance without the need for assembled physical prototypes.

You will learn how to:

  • Characterize active components independently by invariant loads, such as blocked forces
  • Couple components virtually and assess NVH performance using frequency-based substructuring techniques
  • Discover potential pitfalls of different subsystems, such as tires, electric drive units, or steering systems

Accurately predict NVH performance before the first vehicle prototype is built

Lightweight strategies, hybridization, and electrification significantly increase vehicle complexity and the number of variants. Engineers investigating new powertrain concepts with complex load cases must consider the increased importance of road noise and secondary noise sources such as steering systems, tires, or HVAC. Component-based TPA is a technology that addresses these challenges. It allows to model a noise source component independently from the receiver structure and to predict its behavior when coupled to different receivers. It speeds up vehicle development and considerably increases design flexibility.

Use component-based transfer path analysis to identify blocked forces

Component-based TPA extends the capabilities of a classical TPA approach. A component-based approach characterizes each source and component independently to generate virtual assemblies and re-use the identified loads to assess every variant and perform modification predictions. It first identifies key components likely to contribute to noise and vibration issues, then isolates those components for test bench data collection and independent load characterization. Engineers can characterize active components independently by invariant loads, such as blocked forces, and virtually store and recombine them to discover potential pitfalls of various subsystems, such as tires, electric drive units, or steering systems.

Run NVH simulations to predict overall noise in the vehicle

Component-based TPA technology is rapidly gaining ground in the automotive and other industries. It is one of the cornerstone technologies to predict vehicle NVH performance without assembling physical prototypes. Component-based TPA enables engineers to characterize sources and components invariantly while being able to later still couple those components into virtual assemblies. Engineers can run simulations to predict overall vehicle NVH performance, enabling teams to explore possibilities and assembly alternatives while saving high costs in development time.

Watch the on-demand webinar and take component-based TPA to the next level by implementing it as a methodology to benefit the whole organization.

Bart Verrecas

Business Development Team Manager, Siemens Digital Industries Software

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