Towards a model for prediction of railway tread brake noise

• A model for complex linear stability analysis of railway tread brakes has been developed. It accounts forinertial effects due to wheel rotation as well as damping provided by tangential wheel–rail contact forces.Kinematic constraint equations are used to model the normal brake–wheel contact. For a brake–wheelfriction coefficient higher than 0.2, unstable vibrations develop for several system eigenmodes in thefrequency range above 6 kHz. The required level of brake–wheel friction at onset of instability isinfluenced by the wheel profile and the tangential wheel–rail contact damping. The present workconstitutes the first step in the development of a prediction model for railway tread brake noise.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Tribologi (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Tribology (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Teknisk mekanik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Applied Mechanics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

Nyckelord

Tread brake noise

brake squeal

unstable vibrations

Publikations- och innehållstyp

kon (ämneskategori)

ref (ämneskategori)