LMS Releases Latest Acoustics Simulation Software

LMS has released the latest version of its Virtual.Lab Acoustics simulation software. Featuring solutions designed specifically for challenging acoustic problems, the latest release of LMS Virtual.Lab Acoustics includes ray tracing for high-frequency acoustics and time-domain BEM, a new time-based method for acoustic problem solving. A core development focus has been to expand the FEM acoustic solver so that it can handle huge industrial tasks, including large noise radiation problems.

This is possible thanks to the Perfectly Matched Layer (PML) technique, which reduces the number of required elements to solve noise radiation problems more efficiently. Other critical work has occurred in the area of LMS's BEM technology, with the addition of a time-domain BEM solver, allowing acoustic engineers to do realistic simulations and gain more insight into time-related acoustic issues. The new inverse numerical acoustics solution helps determine realistic vibration sources for better noise and vibration system optimisation. LMS has also added the patented Acoustic Transfer Vector (ATV) technology to the Fast Multiple BEM (FMBEM) solver.

With LMS's new ray tracing technology integrated in LMS Virtual.Lab Rev 9, acoustic engineers will be able to handle the full audible frequency range, including sound system optimisation in aircraft, train or vehicle interiors. Enhanced for aero-acoustic engineers, LMS Virtual.Lab Aero-Acoustics Rev 9 includes a variety of new features, such as conservative mapping for more accurate predictions, CFD-based quadruples noise sources and improved fan formulation to provide more ways to address flow-induced noise.

LMS Enhances Imagine Lab System Simulation Suite

LMS International has released the latest version of its multi-domain system simulation solution, LMS Imagine.Lab AMESim Revision 9. The release is said to deliver a straightforward, interactive framework with advanced capabilities for performing 1D system simulation. LMS Imagine.Lab AMESim Revision 9 is said to offer improved ergonomics, enhanced data management, ready-to-use simulators - for example, for hybrid vehicle architectures - and Modelica compliancy.

The system comes with turnkey simulators for various applications in a range of industries, including power train, hybrid vehicles, comfort and driving dynamics for the automotive sector, fluid actuators for aviation and full-wheel loader simulators for the off-highway industry. With these simulators, users no longer have to build their model from scratch and only need to adapt the model to the architecture. Users can then quickly assess drivability and comfort issues as well as performance and fuel consumption.

The release also features improved ergonomics and data management to optimise productivity, according to LMS. For example, cycle analysis is made easier with 1D and modulo plots as well as multiple 3D animation windows. Users can now manage the history of component parameter changes and model architecture changes. Sensitivity analyses can be stored in an LMS Imagine.Lab AMESim model file and recovered with a specific experiment-load-and-save GUI. Modelica code can be seamlessly written and imported from existing codes as well as combined with standard LMS Imagine.Lab AMESim components in a single tool.

The solution also makes it possible to graphically assemble different Modelica models. The LMS Imagine.Lab AMESim platform offers a complete 1D simulation suite to model and analyse multi-domain, intelligent systems and predict multi-disciplinary performance. The model components are described by analytical models representing the system's hydraulic, pneumatic, electric or mechanical behaviour. To create the system simulation model in LMS Imagine.Lab AMESim, users can make use of a large set of validated libraries of pre-defined components from different physical domains. The software creates a physics-based system model, which does not require full 3D geometry representation.

Using LMS Imagine.Lab AMESim, users can simulate intelligent system behaviour long before a detailed CAD geometry is available. The LMS Imagine.Lab software suite provides direct access to dedicated multi-domain simulation solutions for power-train (transmission and internal combustion engines), vehicle thermal management, vehicle system dynamics, aviation systems, fluids systems, and electro-mechanical systems. Each of these solutions comprises a specific set of application libraries and focuses on delivering simulation capabilities to assess subsystem behaviour.