Audi TT 2016, Introduction Manual

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8
Find out more about the bodyshell
of the Audi TT.
With its hybrid material concept, the bodyshell of the Audi
TT represents a new evolutionary stage of Audi Space
Frame technology (ASF). The bodyshell of the 3rd genera-
tion uses components of the Modular Transverse Platform
(MQB) At 98.62 in (2505 mm), the TT has the shortest
wheelbase of any vehicle in the MQB concept.
The substructure is formed from the cross members, sec-
tions of the A-pillars, the bulkhead, floor pan, rear wheel
arches and the rear tail panel. The hot-formed steel in the
sub-structure weighs 87.08 lb (39.5 kg) and accounts for
almost a quarter of the total structural weight.
Key:
Sheet aluminum
Die-cast aluminum
Aluminum section
Ultra-high strength steel (hot-formed)
Advanced high strength steel
High strength steel
Low strength steel
Prior to forming, the steel is heated to approximately 1832
°
F
(1000
°
C). It is then cooled immediately to about 392
°
F
(200
°
C) in a water cooled pressing tool during the forming
process. This drastic change in temperature produces an
extremely strong iron-carbon micro-structure. The form-hard-
ened steel has a relatively low wall thickness and is corre-
spondingly light.
Advanced high strength, cold-formed steel components
together with extruded aluminum sections for the outer
sills and aluminum panels for the rear wheel arches com-
plete the sub-structure of the Audi TT.
Body sub-structure
630_074
Sub-structure integrated into the MQB platform
Torsional rigidity
Compared to the predecessor model, the hybrid ASF of the
new TT has a 23% higher static torsional rigidity while
retaining a high level of dynamic rigidity.
Body