UEbertragung von Methoden zur Kenngroessenermittlung des selbsttaetigen Losdrehens fuer Versuche am Vibrationspruefstand nach Junker auf Versuche an einem neuentwickelten Pruefaufbau fuer Einschraubenverbindungen mit kurzer Klemmlaenge unter Verwendung eines Axialpulsers

摘要

The self-loosening mechanism can be described and classified using characteristics developed with a Junker vibration test rig. The parameters of critical displacement, critical transverse force and critical angle of rotation gradient Delta phi/Delta N are of crucial importance. Under constant boundary conditions the connection will loosen itself, when the threshold value of these critical parameters is exceeded. In the following, the transfer of the methods for determining these critical parameters to a newly developed test setup using an axial test bench for single-bolted joints of the dimensions M12 and M8 with short clamping lengths is investigated.