Abstract: Automotive noise attenuating trim part comprising at least a porous layer whereby the porous layer comprises at least one closed container partly filled with loose particles, whereby the closed container comprises a contact surface formed by a film for contacting a vibrating surface of the vehicle and whereby the surface of the film opposite the contact surface is in contact with at least part of the loose particles, such that the film can transfer vibrational energy from the vibrating surface to the loose particles inside the container.

Abstract: Engine mounted trim part for a vehicle engine comprising a fibrous carrier layer and at least one mounting system for mounting the trim part to a vehicle engine characterised in that the mounting system is built such that it can form a vibration-coupled connection upon mounting to the engine and the fibrous carrier layer is at least self-damping such that it can dampen the vibrational energy.

Abstract: A heat shield for a vehicle comprising at least one layer of a 3D structured metal sheet with a plurality of indentations or embossments, wherein the embossments protrude in a common direction normal to the surface of the sheet material, defined as the neutral plane n. The embossments also protrude a first distance h away from this neutral plane and together form a regular network, where each embossment forms a junction by intersecting with at least two other embossments.

Abstract: A heat shield for a vehicle comprising at least one layer of a 3D structured metal sheet with a plurality of indentations or embossments, wherein the embossments protrude in a common direction normal to the surface of the sheet material, defined as the neutral plane n. The embossments also protrude a first distance h away from this neutral plane and together form a regular network, where each embossment forms a junction by intersecting with at least two other embossments.

Abstract: The present invention is directed to an optirising method for vibration damping treatments and panel shape layouts of vehicle body structure parts in view of acoustic performance. This new optimisation tool is based on a genetic algorithm and is able to efficiently predict the optimum damping package on vehicle body panels in terms of materials, thickness and local damping distribution without the use of any experimental methodology for determining the vibration response. The present invention allows the efficient exploration of very large solution domains and has the possibility of taking into account high numbers of variables, even in full vehicle computations (metal sheet and damping treatment type, shape, thickness, temperature and distribution). The optimisation method according to the present invention has an open architecture, which makes it easy to modify and link to any simulation methodology.