Objective Interior and exterior noise quality are critical performance characteristics in vehicles. For light weight vehicles, they are even determining, together with crash worthiness, the feasibility of the concept. A proper noise and vibration (NVH) design and refinement approach is hence imperative to allow shorter optimisation cycles at lower cost. In spite of considerable (recent) progress in many fields of NVH engineering, a fundamental design problem still remains with the optimisation of the structural acoustics characteristics of car body panels, especially in the medium frequency range (100 500 Hz) where Finite Element methods lack accuracy and the frequency is still too low to allow the application of Statistical Energy models with sufficient confidence. Therefore, the present project aims at the development of a consistent approach and the required tools to address the problem of medium frequency structural identification and optimisation of car body parts, in specific relation to their structural acoustics behaviour. More specifically the project will focus on the structural coupling between the car frame and the body parts, and the structural acoustics coupling to the car interior. The approach will essentially be based on an experimental methodoloqy for car body modelling (e.g. extending the holographic modal analysis method developed in the EUREKA project HOLO MODAL to real time acquisition of pulsed laser images and for measuring multiple panels inside the car) and for structural coupling (e.g. using test or hybrid data based substructurinq techniques for the panel/frame coupling ). It will be fully integrated with tools for body panel noise ranking and structure borne noise transfer path analysis into a consistent global approach. Fields of science natural sciencesphysical sciencesacousticsnatural sciencesphysical sciencesopticslaser physicspulsed lasers Programme(s) FP4-BRITE/EURAM 3 - Specific research and technological development programme in the field of industrial and materials technologies, 1994-1998 Topic(s) 0302 - Transports Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Leuven Measurements and Systems (International) Numeral Technologies NV Address 68,interleuvenlaan 68 3001 Heverlee Belgium See on map EU contribution € 0,00 Participants (6) Sort alphabetically Sort by EU Contribution Expand all Collapse all BMW Bayerische Motoren Werke AG Germany EU contribution € 0,00 Address 147,knorrstraße 80937 München 40 See on map Centro Ricerche Fiat SCpA Italy EU contribution € 0,00 Address Strada torino 50 10043 Orbassano torino See on map GIE PSA Peugeot Citroën France EU contribution € 0,00 Address 18,rue des fauvelles 18 92252 La garenne-colombes See on map KATHOLIEKE UNIVERSITEIT LEUVEN Belgium EU contribution € 0,00 Address 300 b,celestijnenlaan 300 b 3001 Heverlee See on map STEINBICHLER OPTOTECHNIK GMBH Germany EU contribution € 0,00 Address 4,am bauhof 4 83115 Neubeuern See on map Vrije Universiteit Brussel Belgium EU contribution € 0,00 Address 2,pleinlaan 1050 Bruxelles See on map
