NEW 2018 Audi A8 Growth.
The consultants at Audi way back deserted the obsession with utilizing a single materials in light-weight design. With a mixture of aluminum, metal, magnesium and carbon fiber-reinforced polymer (CFRP) they’re establishing a brand new degree in multi-material development of the Audi Area Body (ASF) for the subsequent era of the A8 – in line with the precept “the correct materials in the correct place in the correct quantity”.
The corporate constantly applies new materials applied sciences and designs which are immediately useful to the shopper – and never solely when it comes to weight. The upcoming flagship’s torsional rigidity – the essential parameter for exact dealing with and pleasing acoustics – surpasses its predecessor mannequin’s rigidity worth by as much as 24 %.
Revolutionary manufacturing course of: The carbon rear panel within the new Audi A8
By way of its general dimensions, an ultra-high-strength, torsionally inflexible rear panel product of CFRP is the biggest part within the occupant cell of the brand new Audi A8, and it contributes 33 % to the torsional rigidity of the entire car. To optimally take in longitudinal and transverse masses in addition to shearing forces, between six and 19 fiber layers are positioned one on prime of the opposite, guaranteeing a load-optimized format. These particular person fiber layers include tapes
50 millimeters (zero.2 in) huge and might be positioned individually in a completed layered panel, with any desired fiber angle and minimal trimming of the fibers. The modern direct-fiber-layering course of specifically developed for this objective makes it potential to completely dispense with the usually wanted middleman step of producing whole sheets of carbon fiber. Utilizing one other newly developed course of, the layered panel is wetted with epoxy resin and cured inside minutes.
A high-strength mixture of hot-formed metal parts make up the occupant cell, which includes the decrease part of the entrance bulkhead, the aspect sills, the B-pillars and the entrance part of the roof line. A few of these sheet steel blanks are manufactured in various thicknesses by the use of tailoring applied sciences – they’re tailored in different phrases – and others additionally bear partial warmth therapy. That reduces weight and will increase the power, particularly in areas of the car which are notably essential for security.
Aluminum parts within the type of solid nodes, extruded profiles and sheets, components attribute of the ASF design, make up the most important share of the brand new Audi A8 physique, at 58 %. And right here too the competitors of supplies has been driving progress. New heat-treated solid alloys, for instance, attain a tensile power of over 230 MPa (megapascals). The corresponding yield power within the tensile take a look at is over 180 MPa, and for the profile alloys it’s greater than 280 and 320 MPa – considerably greater values than seen beforehand.
Rounding out the clever mixture of supplies is the magnesium strut brace. A comparability with the predecessor mannequin exhibits that it contributes a 28-percent weight saving. Aluminum bolts safe the connection to the strut tower domes, making them a guarantor of the physique’s excessive torsional rigidity. Within the occasion of a frontal collision, the forces generated are distributed to 3 influence buffers within the entrance finish.
Advantages for patrons and the atmosphere – the brand new physique store for the Audi A8
Along with the entire redevelopment of the Audi Area Body for the subsequent era A8, the manufacturing halls on the Neckarsulm location have been specifically constructed for the upcoming flagship.
A complete of 14,400 metric tons of metal have been wanted only for development of the brand new, 41-meter-high physique store, twice as a lot metal as was used for the Eiffel Tower in Paris.
In 1994 it was the primary era of this luxurious sedan, with its aluminum unitary physique, that made the Audi Area Body a longtime presence within the automotive world. Since then the corporate has constructed a couple of million manufacturing vehicles in accordance with this design precept, and it has been regularly constructing upon its know-how in using supplies and becoming a member of strategies. The result’s modern our bodies whose low weight and excessive rigidity type the idea for better efficiency, effectivity and security.
The physique store – 14 becoming a member of processes
Together with increasing the combo of supplies, Audi constantly focuses on modern manufacturing applied sciences. The model is utilizing 14 completely different becoming a member of processes to assemble the multi-material physique for the brand new A8, together with curler hemming, grip punch riveting, and distant laser welding of aluminum which is being achieved right here for the primary time wherever on this planet.