Leichtbau in der Fahrzeugtechnik

Abstract

Die komplexe Technik heutiger Kraftfahrzeuge und Antriebsstränge macht einen immer größer werdenden Fundus an Informationen notwendig, um die Funktion und die Arbeitsweise von Komponenten oder Systemen zu verstehen. Den raschen und sicheren Zugriff auf diese Informationen bietet die Reihe ATZ/MTZ-Fachbuch, welche die zum Verständnis erforderlichen Grundlagen, Daten und Erklärungen anschaulich, systematisch, anwendungsorientiert und aktuell zusammenstellt.Die Reihe wendet sich an Ingenieure der Kraftfahrzeugentwicklung und Antriebstechnik sowie Studierende, die Nachschlagebedarf haben und im Zusammenhang Fragestellungen ihres Arbeitsfeldes verstehen müssen und an Professoren und Dozenten an Universitäten und Hochschulen mit Schwerpunkt Fahrzeug-und Antriebstechnik. Sie liefert gleichzeitig das theoretische Rüstzeug für das Verständnis wie auch die Anwendungen, wie sie für Gutachter, Forscher und Entwicklungsingenieure in der Automobil-und Zulieferindustrie sowie bei Dienstleistern benötigt werden.

Joining of ultra-high-strength steels using resistance element welding on conventional resistance spot welding guns

“…Since the idea of reducing the car body weight is old [14], the first application of multi-material design in mass production was implemented in the Ford Model T (comparing Ford Model T from 1915 to Ford Model T from 1925) [15]. In series production of the Audi A8 D2 (1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002), the Audi Space Frame (ASF) enabled a body in white made of aluminium [16]. In this case, mechanical (riveting, clinching, screwing, and hemming), adhesive bonding, and hybrid (riveting + adhesive bonding) joining technologies were used [17].…”

“…Clinching is a mechanical joining technology which enables form-locked joints without any additional auxiliary joining element. Conventional clinching is only suitable when the joined materials are relatively ductile, and the tensile/yield strength is low [16]. Press-hardened steels in dissimilar joints can only be joined by shear-clinching [21].…”

“…Press-hardened steels in dissimilar joints can only be joined by shear-clinching [21]. SPR is a mechanical joining technology for joining thicker aluminium sheets by using a semi-hollow rivet [16]. Both clinching and SPR provide a good material-thickness-flexibility and heatless process sequences [20].…”

“…For a further penetration of the aluminium sheet, it is necessary to soften the aluminium by Joule heating. This process step is referred to as hot penetration [16,28,29]. Due to the current flow, the steel sheet and the welding rivet are heated up, and the aluminium sheet softens due to the heat absorption [30].…”

Integrative manufacturing of thermoset injection molding components with continuous fiber-reinforcement

“…pre-impregnated fiber-reinforced semi-finished materials are placed in a vacuum bag in an autoclave and are cured under high pressure. The disadvantages of this technology are long process cycles of several hours and high process costs [9,10].…”