LMS Virtual.Lab Noise and Vibration

From component to system-level noise and vibration prediction -

While it is relatively easy to predict performance at the component level, most noise and vibration issues are only discovered at the full system level. Experience shows that making extensive prediction models is a tedious and difficult process, one that does not necessarily produce results that match reality. How can you quickly and reliably synthesize system-level models? How can you accurately predict the most critical noise and vibration contributors and identify the best design modifications?

The total process approach to noise and vibration engineering -

A vehicle’s NVH performance largely depends on the various loads the vehicle carries and the resulting complex interactions between numerous components and connections. This is why noise and vibration engineering optimizes the vehicle as a singular, complete system. From the concept development stage onwards, LMS Virtual.Lab Noise and Vibration supports vibro-acoustic assessment on full-system models, capturing all critical process steps to systematically improve noise and vibration characteristics throughout the total system.

Delivering the right noise and vibration performance -

LMS Virtual.Lab Noise and Vibration allows engineering teams to evaluate the vibro-acoustic behavior of multiple

vehicle-variants. Its industry-standard solvers execute fast and accurate predictions while dedicated post-processing capabilities provide immediate feedback regarding vibroacoustic responses and transfer paths.

Enriched noise and vibration analysis with data from various engineering domains -

LMS Virtual.Lab Noise and Vibration offers a unique hybrid simulation approach that intelligently combines Finite Element (FE) modeling with test-derived models. Besides the link to testing, LMS Virtual.Lab Noise and Vibration can also use simulated data from multibody and flexible body simulations created in LMS Virtual.Lab Motion. In this way, users can define realistic load cases according to actual model dimensions to determine the optimal time-domain performance. LMS Virtual. Lab Noise and Vibration can be used to generate data for more in-depth acoustic analysis using LMS Virtual.Lab Acoustics.

Integrate test-derived component information in full-system simulation models
Analyze critical noise and vibration contributors and identify optimal design modifications
Refine noise and vibration performance before building the first prototype
Reuse data from other LMS Virtual.Lab modules to meet targets and design restraints

An effective process to optimize design prior to physical prototyping -

LMS Virtual.Lab Noise and Vibration provides all the tools to create system-level NVH models based on subsystems and components. Throughout the development, modifications to individual FE or testderived

components and assembly connections can be inserted to improve the system-level NVH performance. With its unique capability to incorporate both test-based and FE-based models in an assembly, the LMS Virtual.Lab Noise and Vibration hybrid solution offers its users both the accuracy and design flexibility they need to produce

reliable simulation results. Fast iterations provide maximum inside in the system- or component-level NVH behavior, allowing to steer the development from the initial stage onwards.

Building realistic load cases

Loads that reliably represent realistic customer usage are a key prerequisite for accurate noise and vibration prediction. LMS Virtual.Lab Noise and Vibration offers maximum flexibility when it comes to load case retrieval and respective system assembly placement. It handles any type of dynamic load data whether retrieved from force transducers or calculated from displacements or responses.

Self-explanatory and easily interpretable results

LMS Virtual.Lab Noise and Vibration offers a wide range of visualization and analysis tools dedicated to noise and vibration engineering. These post-processing options help users to efficiently investigate transfer paths and assess the noise and vibration contribution of individual vehicle or system parts.

Efficient engineering refinement

LMS Virtual.Lab Noise and Vibration is specifically developed to refine and optimize a design’s vibro-acoustic behavior. Convenient tools help engineers to assess design-variant performance in a couple of minutes, quickly explore multiple options and use optimization routines to find the best possible solution.