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      Synthetic method to investigate self-loosening of suspension fasteners considering nonlinear tire characteristics at the adhesion limit Translated title: Eine synthetische Prüfmethode zur Untersuchung des selbsttätigen Schraubenlösens von Fahrwerksverschraubungen unter Berücksichtigung von nichtlinearen Reifeneigenschaften im Grenzbereich

      1 , * , , 1 , 1
      Materials Testing
      Carl Hanser Verlag

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          A synthetic test method is described which is capable of investigating various suspension fasteners on a dynamic half-axle test rig. This test method is advantageous compared to an expensive and time-consuming driving cycle. In advance vehicle specific measured values that serve as input parameters for the test rig experiments are required. This study shows how the adhesion limit influences the interdependencies between vertical load, side slip angle and longitudinal slip. By means of multibody systems and in consideration of the determined nonlinear tire characteristics, this method can be applied to investigate suspension fasteners of vehicles without expensive and time-consuming test drives. Validation results of different vehicles are given which demonstrate that the method is appropriate to a wide range of vehicles.


          Zur Variantenuntersuchung von Fahrwerksverschraubungen auf einem dynamischen Halbachsprüfstand ist eine synthetische Prüfmethode entwickelt worden, um eine Alternative zum realen Fahrversuch zu schaffen. Für die Methode sind fahrzeugspezifische Größen erforderlich, welche als Eingangsgrößen für den Prüfstandversuch genutzt werden. Mit Hilfe einer MKS-Simulation des Fahrzeuges und unter Beachtung der ermittelten nicht linearen Reifeneigenschaften kann die Methode bereits im Vorserienstand zur Untersuchung von Fahrwerksverschraubungen auf einem hoch dynamischen Rundkursmanöver angewendet werden. Darüber hinaus liegen Validierungsergebnisse verschiedener Fahrzeugtypen vor, welche die Anwendbarkeit der Methode auf ein großes Fahrzeugspektrum aufzeigen.

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          Most cited references5

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          Effect of pitch difference between the bolt–nut connections upon the anti-loosening performance and fatigue life

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            Synthetic method for inverstigation of the effect of self-loosening screws at suspension fastener

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              Untersuchungen über die Mechanik des selbsttätigen Lösens und die zweckmäßige Sicherung von Schraubverbindungen


                Author and article information

                Materials Testing
                Carl Hanser Verlag
                16 November 2016
                : 58
                : 11-12
                : 927-931
                1 Hamburg, Germany
                Author notes
                [* ] Correspondence Address, M.Sc. Marcus Kaatz, Research Assistant, Institute of Automotive and Powertrain Engineering (IFAS), Helmut Schmidt University of the Federal Armed Forces Hamburg, Holstenhofweg 85, Bldg. H8, 22043 Hamburg, Germany, E-mail: kaatzm@ 123456hsu-hh.de

                Marcus Kaatz (M.Sc.), born in 1988, studied at Leibniz University in Hannover, Germany, and received his Master Degree in Mechanical Engineering in 2013. Since 2013, he is responsible for the tire testing facility at Helmut Schmidt University of the Federal Armed Forces, Hamburg, Germany. His research focuses on self-loosening of suspension fasteners and the development of a synthetic test method on a half-axle vehicle test rig.

                Univ.-Prof. Dr.-Ing. Martin Meywerk, born in 1965, received his Dr.-Ing. Degree from the Institute of Engineering Mechanics at Braunschweig University of Technology in 1997. Since 2002, he is the Director of the Institute of Automotive and Powertrain Engineering at Helmut Schmidt University of the Federal Armed Forces, Hamburg, Germany, and holds the chair of Automotive Engineering.

                Sven Spittler (B.Eng.), born in 1992, received his Bachelor Degree in Automotive Engineering from Hamburg University of Applied Sciences, Germany, in 2015 and currently studies there in the consecutive Master program. Since 2014, he has been working as an academic research assistant at the Institute of Automotive and Powertrain Engineering at Helmut Schmidt University of the Federal Armed Forces, Hamburg, Germany.

                © 2016, Carl Hanser Verlag, München
                Page count
                References: 20, Pages: 5
                Fachbeiträge/Technical Contributions

                Materials technology,Materials characterization,Materials science
                Materials technology, Materials characterization, Materials science


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