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NVH Response Analysis

  
LMS Virtual.Lab NVH Response Analysis is an easy-to-use, entry-level simulation tool for predicting the noise and vibration behavior of a component, sub-system or complete model under operational loading conditions. With transparent access to all available models and load data from CAE and testing, users can integrate the best available data mix at all times.
 

LMS Virtual.Lab NVH Response Analysis

VL Noise and Vibration NVH Respons Analysis 01.jpg
LMS Virtual.Lab NVH Response Analysis is an easy-to-use, entry-level simulation tool for predicting the noise and vibration behavior of a component, sub-system or complete model under operational loading conditions. With transparent access to all available models and load data from CAE and testing, users can integrate the best available data mix at all times. Fast modal and FRF-based prediction solvers quickly analyze a multitude of design variants. NVH specific post-processing tools help the engineering team compare actual responses with pre-defined or imported targets and optimize noise and vibration behavior.

LMS Virtual.Lab NVH Response Analysis offers maximum flexibility when retrieving and applying load cases. The system accepts a multitude of load formats and types, derived from measurements, multibody or acoustic simulations, or generic loading sources. This includes structural forces, displacement excitations, and acoustic
loads. The latter can be derived from structural vibrations on panels using acoustic source quantification. Combining measured loads with virtual models results in a more realistic NVH simulation as well as better and more reliable design insights.

Engineers can easily set up NVH analysis runs with the template-based user interface, either starting from an FE model or using a test-based model. The solution also includes FRF and modal-based NVH response solvers to
compute system noise and vibration responses. This results in fast simulation runs to process numerous design options in a limited timeframe.

A wide variety of advanced post-processing tools help engineers investigate noise and vibration contributions of individual or grouped paths or modes to the final response and compare the response results with target data.
LMS Virtual.Lab NVH Response Analysis supports techniques to execute design modifications from manually triggered modification analyses to fully automated design space explorations in combination with LMS Virtual.Lab Optimization.



Features

  • Universal access to test and FE data for both model and excitation data
  • Numerous supported load data formats: frequency, rpm or time-dependent data for force, displacement, velocity, acceleration, volume velocity and volume acceleration
  • Fast modal and FRF-based forced response solvers
  • Modal-based FRF synthesis to determine transfer functions from modal data
  • Path and modal contribution analysis to determine the root cause of noise & vibration problems
  • Wide variety of 2D, 2.5D and 3D displays to analyze operational responses


Benefits

  • Transparent access to the best available test & CAE data at any time
  • Create templates that capture your analysis process and facilitate future calculations
  • Make predictions more quickly with embedded FRF and modalbased NVH response solvers
  • Increase response prediction accuracy using hybrid simulation: use measured loads with CAE or Test models
  • Better result visualization with various intelligent NVH post-processing indicators and interactive visuals
  • More insight into structural and acoustical contributions, path and modal contributions



Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges.


Noise Vibration H processes and technology 2Tackling Tough NVH Challenges at BorgWarner 

In working with design concepts early in development, BorgWarner uses LMS Sysnoise to simulate the performance of new transfer cases and predict their resulting sound signatures. The aim is to reduce reliance on prototype tests because of the time and expense of changing transfer case castings and reworking dies, which can take months to complete and cost thousands of dollars.





Hybrid FRF-Based Substructuring (FBS) 3Opel Implements Hybrid FRF-Based Substructuring 

Compressed development cycles and increased customer expectations in relation to the Noise, Vibration & Harshness (NVH) comfort of a car pressure automotive manufacturers to further extend the capability and efficiency of their NVH engineering process. To be able to meet these demands, Opel introduced FRF-Based Substructuring (FBS) and validated the practical use of this hybrid simulation method. 



More cases:

 





Brochures
Download the LMS Virtual.Lab Introduction Brochure
 Download the LMS Virtual.Lab Noise And Vibration Brochure

Images

VL Noise and Vibration NVH Respons Analysis 02.jpg VL Noise and Vibration NVH Respons Analysis 03.jpg VL Noise and Vibration NVH Respons Analysis 04.jpg
Forced Response results displayed as model deformation and path contributions for fast problem assessment. Modal results and synthesized FRFs. FRF-based forced response analysis on test-based body model.




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