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LMS Virtual.Lab Acoustics
Makes sound engineering decisions faster -
Are your customers expecting ever quieter products? Are your competitors gaining ground using sound quality as a differentiator? Will tighter noise emission legislation impact your product sales? Would you like to decrease the amount of time spent on basics such as predicting sound fields or shave off weeks on a more complex job like an engine run-up? In the past, parametric analysis and design refinement was simply not feasible because of cost and time constraints - the only option was to apply expensive techniques late in development stage at the expense of design flexibility. This is no longer the case.
Real time-saving opportunities -
With the revolutionary breakthroughs embedded in the various LMS Virtual.Lab Acoustics solutions, you can now remodel design changes within minutes, perform acoustic meshing in a couple of hours and predict an engine run-up within a day. You’ll be able to make well-informed decisions during the concept stage, and systematically refine and optimize your product’s acoustic performance from the initial design to completion.
Faster than ever acoustic simulation -
By integrating ground-breaking LMS SYSNOISE technologies into LMS Virtual.Lab Acoustics, LMS has created the world’s first end-to-end environment for acoustic performance engineering from concept development and design refinement using virtual models to test-based validation. LMS acoustic solutions cover routine applications, such as structural noise radiation and cavity field simulations, and address specific acoustic engineering issues, like engine run-ups, flow-induced noise or random acoustic loading.
• Gain full insight into acoustic problems
• Accurately and quickly predict design change effects
• Minimize the cost and weight of sound treatment
• Reduce noise levels and incorporate desirable sound before prototype testing
Acoustic simulation: an integral part of the engineering process -
Re-use CAD and CAE models -
For an easy start into the acoustic engineering process, LMS Virtual.Lab Acoustics seamlessly links to key CAD, CAE and even test tools. No more time lost in recreating models, re-meshing for different applications, or endlessly converting between different file formats. Just use your preferred Finite Element (FE) solver for structural analysis and even run it in the background of the LMS Virtual.Lab environment.
Create the acoustic mesh -
LMS Virtual.Lab Acoustics dramatically accelerates both cavity and exterior acoustic meshing processes. For exterior meshing, the approach can be compared to wrapping the structure with a rubber sheet: small surface features are smoothed while features responsible for the acoustic response remain in place. Acoustic meshes are automatically validated; free edges and junctions are detected to ensure proper boundary conditions and potential problems are flagged to prevent errors rippling through the process.
Complete the model -
Even for incompatible structural models, it is easy to create structural vibration loads for acoustic calculations. You can quickly build in acoustic properties, such as frequency dependent absorbent surfaces, add complexity for detailed studies or automatically generate ISO field-point meshes. Acoustic source definitions range from simple point to sophisticated distributed sources such as random pressures and diffuse fields. For designs with moving parts, you can perform a system-level mechanical simulation using LMS Virtual.Lab Motion to accurately predict forces and resulting structural vibrations for significantly more insight into the cause of the acoustic problem.
Solve tough acoustic problems -
To reduce design calculation times, robustness and calculation speed are two critical attributes for successful acoustic simulation in mainstream product development. This is why key elements of SYSNOISE, a core LMS technology, have been implemented into LMS Virtual.Lab Acoustics.
Besides dedicated solvers in the frequency domain for stationary problems and the time domain for transient calculations, there are modal solvers, direct solvers, high-speed iterative FEM solvers, high-speed BEM solvers, a fast multipole BEM solver, parallel solvers and Acoustic Transfer Vector (ATV) solvers.
Visualize and interpret results -
Engineers need to verify acoustic performance, identify existing acoustic problems and develop qualitative solutions. They need a wide range of specialized post-processing tools to manipulate, visualize and interpret data. LMS Virtual.Lab Acoustics has it all. From the initial avalanche of results, you will be able to grasp the most significant information, post-process it, identify design trends, and create graphical acoustic data representations. Stunning visual animations help you to inspect structural vibration and acoustic patterns while providing deeper insight into what is actually happening.
Refine and optimize your design -
Take full advantage of LMS Virtual.Lab Acoustics to swiftly predict the effect of any design change. A very effective parametric analysis capability helps you to automate the process workflow. For example, it enables you to apply new engine run-up excitation data to an existing engine acoustic model and compare the previous results with the new results and target values. By using Design Of Experiments (DOE) and optimization, you can automatically explore the design space and balance parameters for optimal and reliable acoustic performance against non-acoustic constraints like weight or durability.
Automation and scripting -
LMS Virtual.Lab Desktop offers the possibility to record and playback repetitive processes, such as load assignment, source assignment or an engine radiated acoustic simulation set-up. With Visual Basic scripting, you can further customize tasks, performing a standard computation with one-click of a button or generating and distributing a report. |
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 Download the LMS Virtual.Lab Acoustics Brochure
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