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Transferability of material data for the example of a randomly loaded forged truck stub axle

Übertragbarkeit von Werkstoffkennwerten am Beispiel eines betriebsfestauszulegenden geschmiedeten Nutzfahrzeug-Achsenschenkels
 
: Sonsino, C.M.; Kaufmann, H.; Grubisic, V.

SAE transactions 106 (1997), pp.649-670
ISSN: 0096-736X
English
Journal Article
Fraunhofer LBF ()
Achse; Anriß; axle; Bauteil; Bemessung; Betriebslastensimulation; constant amplitude loading; crack; damage accumulation; data bank; data transfer; Datenbank; Datenübertragung; Dehnung; design; Einstufenbeanspruchung; Fahrzeugbau; failure criterion; fatigue life estimation; forging part; gekerbte Probe; Last; Lastfolge; Lastkraftwagen; Lebensdauerabschätzung; load; load sequence; local stress; Maschinenbau; material property; Mehrstufenbeanspruchung; metal; Metall; notched specimen; örtliche Spannung; Probestab; random loading; Schadensakkumulation; Schmiedestück; Spannung; Spannungsanalyse; Spannungsdehnungsverhalten; specimen; Stahl; steel; strain; stress; stress analysis; stress strain behavior; structural component; test; truck; ungekerbte Probe; unnotched specimen; variable amplitude loading; vehicle construction; Versagenskriterium; Versuch; Werkstoffeigenschaft; zufallsartige Beanspruchung

Abstract
For the development of new components, design engineers today have access to a broad amount of fatigue data, which were obtained from unnotched and notched specimens. These data can be transformed when the conditions of material, strength, geometry, surface and surface layer and loading mode in the fatigue critical areas are taken into account for constant and variable amplitude loading. The procedure of data transferability is discussed for the example of a randomly loaded truck stub axle where the failure criterion is the first detectable crack, and the local equivalent stress/strain and the maximum stressed/strained material volume are considered. In addition, several problems associated with fatigue life assessment under variable amplitude loading are discussed.

: http://publica.fraunhofer.de/documents/PX-36813.html