RAYON-VTM (Vehicle Trim Modeler), ESI Group’s leading-edge technology makes possible low frequency vibro-acoustic analysis of fully trimmed structures that can be deployed as part of an industrial vehicle refinement program.

RAYON-VTM represents one of the latest innovative solutions for vibro-acoustic simulation, analysis and design.

In the automotive industry concurrent engineering practices make increasing demands for tools that allow engineers to perform virtual refinement, early in the design cycle, to meet ever decreasing time constraints.

RAYON-VTM is a unique simulation software that provides a process driven approach to the preparation of full vehicle FEM models created from a combination of structural, acoustic and trim FE meshes. The software automatically resolves incompatibilities of the differing FE meshes and integrates the result with modal information that facilitates calculation of interior noise. VTM offers fast turnaround of results that easily enables deployment of the solution as part of a vehicle refinement process, typically with overnight solution times

This software is the result of a close collaboration between Renault, a leading car manufacturer, Trèves, a trim manufacturer and ESI Group.  This partnership has led to a computationally efficient, validated tool, which provides significant cost savings coupled with increased refinement productivity. VTM allows engineers to optimize Noise Controls Treatments (NCT) in terms of weight, cost and effectiveness without the need to perform expensive and time consuming test cycles.

ESI Group is the only company offering a complete range of simulation software for vibro-acoustic simulation that covers the low, mid and high frequency spectrum. ESI Group proudly added in March 2006 RAYON-VTM to its product portfolio.

ESI Group’s vibro-acoustic software portfolio now includes:

RAYON, a low-frequency solution for characterization of complex noise sources and prediction of acoustic performance. Vehicle Trim Modeler - VTM: an automation module used for low frequency full vehicle sound package design.

AUTOSEA2, the classic solution for high-frequency prediction of acoustic and vibration behavior of complex industrial systems.

FOAM X identifies the acoustic properties of poro-elastic materials from impedance tube measurement.

NOVA is an easy-to-use, flexible and powerful solution used to predict and optimize the absorption of acoustic materials and their integration into multi-layered structures.

PAM-VA One: a newly integrated tool for the simulation and prediction of low, mid and high frequency vibro-acoustics response that combines statistical (AutoSEA2) and deterministic (RAYON) simulation methodologies in a common environment. PAM-VA One integrates work developed under the Structure-Borne Noise Module Consortium, an unprecedented full spectrum analysis that rigorously combines Finite Element Analysis (FEA) and Statistical Energy Analysis (SEA).

Courtesy of Renault