Numerical Engine Acoustics

LMS Virtual.Lab Numerical Engine Acoustics is an efficient tool to predict noise radiated throughout a full engine run-up and gain insight into noise problem causes in general. With this comprehensive solution, engineers can simulate and optimize the engine design for top acoustic performances. LMS Virtual.Lab Numerical Engine Acoustics uses excitation forces obtained from dynamic multibody analyses ( LMS Virtual.Lab Motion) , one dimensional calculation tools ( LMS Imagine.Lab AMESim) or from measurements. Dynamic load data and structural modes, calculated by using standard FE codes, are used to determine surface vibrations from which acoustic radiation is predicted. With LMS Virtual.Lab Numerical Engine Acoustics, engineers can create acoustic meshes very quickly. The BEM ( boundary element method) acoustic mesh automatically adapts to the analysis frequency. As a result, an accurate acoustic mesh can be generated in hours instead of weeks. This solution’ s solver uses unique and efficient ATV ( acoustic transfer vector) technology to perform very fast multiple rpm runs and accelerate calculation reruns when analyzing alternative designs. Based on surface vibrations, total radiated noise and sound pressure levels in predefined locations are predicted, which reduces the total engine noise radiation process from months to a day. Based on the results, engineers can analyze the total radiated power through ISO 3744 meshes and even acoustic sensitivities with regard to excitation forces. They can access a comprehensive set of clear visualization tools to investigate obtained sound pressure levels. Features • Boundary element method • Create acoustic BEM mesh based on structural mesh • ATV-based calculation ( acoustic transfer vector) • Integrated structural forced response solver • Structural excitation from measurement, multibody simulation, multi-load case ( multi-rpm) and order analysis • Acoustic pressure & structural force sensitivity • Plotting and 3D imaging: SPL, ISO 3744 Sound Power, RMS, dB weighting, ( 1/ 3) Octave Benefits • Predict radiated noise in time for every design loop • Verify noise levels according to specifications, find possible noise causes and suggest design improvements in time • Gain more insight into acoustics problem & facilitate design improvements Software engineering memiliki misi menyediakan quality engineering software untuk para engineer sehingga mereka dapat lebih produktif dalam pekerjaannya. Kami juga membuatkan aplikasi software engineering yang customized / khusus , dengan harga yang bersaing. Contact us: 0815 614 1954, 0811 891 101, 0817921 7081