A note on thermoelastodynamic instability (TEDI) for a 1D elastic layer: Force control

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:44

Article

Afferrante, L. ; Ciavarella, M.

关键词: thermoelastic contact;    TEI;    thermoelastic instability;    squeal;    frictional vibrations;   

DOI  :  10.1016/j.ijsolstr.2006.06.030

来源: Elsevier

【 摘 要 】

Recently, a new mechanism of frictional instability has been identified, for an elastic layer sliding against a rigid non-conducting support. This mechanism emerges where neither elastodynamic instabilities (e.g. 'brake squeal') nor thermoelastic ('TEi') instabilities would be active. The time scales of these processes differ considerably, so it is usual to neglect coupling between them - yet, the natural elastodynamic vibrations of the layer become unstable at arbitrarily low sliding speeds. In this paper, the force control analogous problem is treated, for which, contrary to the previous case, a pure TEI instability does not exist. The results show similar mechanisms of instability, but now the average pressure in the limit cycle is given and hence only the shape of the cycle can change, (c) 2006 Elsevier Ltd. All rights reserved.

【 授权许可】

Free