ESI Group (Paris, France) has launched its latest version of VA One, which provides a simulation environment for vibro-acoustic analysis and design. The software combines key vibro-acoustic modeling methods, einite elements (FEM), boundary elements (BEM), and statistical energy analysis (SEA) in a single model. The latest version of VA One contains what ESI says are advances in SEA modeling of complex plates. ESI has develpoed a set of formulations to calculate the vibro-acoustic response of structures, including sandwich panels with composite skins, composite panels and laminated visco-elastic panels. This allows engineers to assess the impact of turbulent boundary layers excitations on "every possible type of panel, whatever their thickness and structure type." The latest release also focuses on seamless coupling with open source computational fluid dynamics (CFD) software OpenFOAM and supporting advanced aeronautic materials. It provides automated user assistance when setting up a large number of load cases, reducing import time from several hours to only a few seconds. ESI says the objective is to minimize time-consuming jobs by automating them, so engineers can focus on high value-added tasks. Automatic coupling with OpenFOAM enables engineers to make predictions of the performance of their designs in the presence of stationary flow components. The utility generates standard OpenFOAM meshing automatically and updates the vibro-acoustic models with local fluid dynamics properties (e.g. Mach vectors) for easy integration into VA projects involving propagation in ducts, mufflers and other similar cases.
Editor PickMore companies join NASA’s Advanced Composites Consortium
The project’s goal is to reduce product development and certification timelines by 30 percent for composite aircraft.