Towards an engineering model for curve squeal
Paper i proceeding, 2015

Curve squeal is a strong tonal noise that may arise when a railway vehicle negotiates a curve. The wheel/rail contact model is the central part of prediction models, describing the frictional instability occurring in the contact during squeal. A previously developed time-domain squeal model considers the wheel and rail dynamics, and the wheel/rail contact is solved using Kalker’s nonlinear transient CONTACT algorithm with Coulomb friction. In this paper, contact models with different degree of simplification are compared to CONTACT within the previously developed squeal model in order to determine a suitable contact algorithm for an engineering curve squeal model. Kalker’s steady-state FASTSIM is evaluated, and, without further modification, shows unsatisfying results. An alternative transient single-point contact algorithm named SPOINT is formulated with the friction model derived from CONTACT. Comparing with the original model results, the SPOINT implementation results are promising and similar to results from CONTACT.

railway

frictional instability

CONTACT

wheel

curve squeal

single-point contact

rail

contact mechanics

Författare

Ivan Zenzerovic

Vibroakustik

Astrid Pieringer

Vibroakustik

Wolfgang Kropp

Vibroakustik

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

1612-2909 (ISSN) 1860-0824 (eISSN)

Vol. 126 433-440

Ämneskategorier

Maskinteknik

Farkostteknik

Strömningsmekanik och akustik

Styrkeområden

Transport

DOI

10.1007/978-3-662-44832-8_52

ISBN

978-3-662-44831-1