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Karl Marguerre1 ist heute nur noch wenigen Wissenschaftlern wirklich bekannt, obwohl er sich während seiner Hochschullehrertätigkeit in Darmstadt mit großem Engagement um den wissenschaftlichen Nachwuchs bemühte und von vielen Studenten gehört wurde. Zu seinen Schülern zählen u. a. Ernst Giencke [1], Walter Schnell (von dem auch die Darstellung in der Neuen Deutschen Biographie [2] stammt), Horst...
Ende des 19. und Anfang des 20. Jahrhunderts wurden für die Strukturberechnung von Rahmentragwerken Verfahren entwickelt, die heute als “Kraftgrößenverfahren“ und “Deformationsmethode“ bezeichnet werden. In Deutschland war die Entwicklung mit den Namen Heinrich Müller‐Breslau und Otto Mohr verbunden. Zwischen beiden entwickelte sich eine heftige Kontroverse zu der Frage, ob die Grundlagen der beiden...
The maximum surface temperature during rolling contact of railway wheels with sliding friction can be estimated using Blok's flash temperature formula. For a more detailed investigation, semi-analytical and numerical methods are available. A survey of various methods is given and an efficient approach is proposed for Hertzian contact. The actual contact temperature is confined to a very thin surface...
In Japan, rail corrugations had not been so serious formerly, but it began to be prevailing in recent years. In order to prevent the generation of rail corrugation, many studies have been reported in the world since the end of 19th century, but theories on them have not explained the formation mechanism perfectly and no perfect countermeasures have been established so far. Thus, the studies on corrugation...
A simple mechanical model has been built to demonstrate some phenomena associated with rolling contact. The model consists of an aluminium bicone (wheelset) and two cylindrical steel rods coated with a layer of polymer. Using this model rolling contact was investigated experimentally and an attempt made to interpret results with available theories for solid elastic bodies. It appeared that none of...
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