Transient solution of a thermoelastic instability problem using a reduced order model.

摘要: Above a certain critical speed, slidingsystems with frictional heatingsuch as brakes and clutches can exhibit thermoelastic instability in which non-uniform perturbations develop the pressure temperature .elds. A method is described transient thermomechanical behaviour of such systems approximated by reduced order model, describing one or more dominant eigenfunctions. The goal to construct mathematical model system modest number degrees freedom. If single perturbation used, an integral expression be written for evolution time. accurate description involvingseveral terms requires that generated sequence operations sliding speed piecewise constant. Both models are evaluated comparison direct numerical simulation prove give good accuracy dramatic reduction computingtime. ? 2002 Elsevier Science Ltd. All rights reserved.