Three-dimensional numerical solution for wear prediction in combustion engine valves using a mortar contact algorithm

FEDERICO J. CAVALIERI; ALBERTO CARDONA

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING

JOHN WILEY & SONS LTD

Lugar: En Prensa; Año: 2012 p. 1 - 24

0029-5981

A finite element formulation to compute the wear between three-dimensional flexible bodies that are in contact with each other is presented. The objective of this study is to characterize the wear rate coefficients for bi-metallic pairs commonly used in internal combustion engine valves and to numerically predict the wear depths in new valve designs. The contact pressure and the bodies displacements are calculated using an augmented Lagrangian approach in combination with a mortar method, which defines the contact kinematics. Experimental results of wear for the metallic pairs used in combustion engine valves and inserts are presented and are taken as a reference solution. An example is provided that shows agreement of the numerical and experimental solutions. Finally, the proposed algorithm is used to predict the wear in an internal combustion engine valve.