arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustics See All Software See All Transducers See All Vibration Testing Equipment See All Academy See All Resource Center See All Applications See All Industries See All Insights See All Services See All Support See All Our Business See All Our History See All Our Sustainability Commitment See All Global Presence
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All DAQ Systems See All High Precision and Calibration Systems See All Industrial electronics See All Power Analyser See All S&V Hand-held devices See All S&V Signal conditioner See All Test Solutions See All DAQ Software See All Drivers & API See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All Utility See All Vibration Control See All Acoustic See All Current / voltage See All Displacement See All Load Cells See All Pressure See All Strain Gauges See All Torque See All Vibration See All Accessories for Vibration Testing Equipment See All Power Amplifiers See All LDS Shaker Systems See All Vibration Controllers See All Training Courses See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All Our People
arrow_back_ios

Main Menu

See All CANHEAD See All GenHS See All LAN-XI See All MGCplus See All Optical Interrogators See All QuantumX See All SomatXR See All BK Connect / Pulse See All API See All Microphone Sets See All Microphone Cartridges See All Acoustic Calibrators See All Special Microphones See All Microphone Pre-amplifiers See All Sound Sources See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All Non-rotating (calibration) See All Rotating See All CCLD (IEPE) accelerometers See All Charge Accelerometers See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Dynamic Weighing See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

NVH - CAE prototypes

Vehicle developers must consider NVH earlier and earlier, so CAE analysts are doing more and more virtual prototyping. Yet they must effectively interface with real-world testing.

Virtual prototypes and previous-iteration vehicles must be tested and give input and feedback into CAE models. But if the collaboration is to be effective, the dialogue must go both ways.

This is where auditioning the sound and vibration characteristics of CAE models comes into play – helping merge the spheres of testing and CAE. 


Automotive software

LEARN MORE
CAE AUDITIONER


Speeding up the process for CAE Designers and Analysts

Brüel & Kjær’s software enables CAE designers to rapidly process their latest design into a highly authentic sound model, so they can experience how the whole vehicle would sound with that newest component installed. Consequently, their fellow CAE analysts and test engineers can listen to the very latest iteration, or hear alternative prototypes back-to-back, and evaluate them with nothing more than their ears –providing a valuable subjective evaluation to supplement graphs and curves.

Desktop CAE sound auditions

Because the system operates equally well with tests and/or CAE data, combinations of these can be used. So real-world data measured on a prototype can supply the sound sources, such as the drivetrain, and then CAE data can be used for a vibration path transfer function – such as a newly designed engine mount. 

Listeners can hear vehicles in different modes of testing, such as constant speed, Wide Open Throttle / Overrun, or any other test profile. Then, on the screen, they can view up to nine detailed contribution diagrams of the sound, to help identify the most important contributions. They can synchronize the readouts for different design alternatives, making it very easy to perform A-B comparisons. They can also interact with the sound files by applying filters, to tailor the sound to produce the desired effect.

The key to this new capability is the CAE Auditioner from Brüel & Kjær. This takes seconds to convert files from major CAE design codes into sound models. Then, with Brüel & Kjær’s Time Insight user-interface, an analyst can listen to and compare the sound profiles, to audition their sound models from the ease of their desktop.

In use, analysts can listen to the vehicle sound, and identify critical frequencies, speeds, and RPM. They can also modify source strengths and paths, and evaluate the results. This gives effective, targeted feedback into their design processes, accurately indicating which part should be updated.

To take advantage of the inherent strength of CAE models at predicting changes, the software features a change modeling capability. This takes the difference between design iterations and applies it as a filter, giving a highly accurate impression of the relative effect of design changes in CAE – rather than absolute values calculated purely in a CAE program.



When people from different departments are involved – such as testers, management, and designers – with all of their particular languages and approaches, an intuitive method of evaluation like this is invaluable for rapid and effective communication. It also allows non-experts to get involved in early decision-making because they can make subjective evaluations. And by joining CAE and NVH, it helps test engineers from both areas to share and develop their ideas together, improving confidence.

With better decision-making in less time, more effective NVH process results, where designers of all disciplines can make the best use of all data at all times.

Support Content