TY - JOUR T1 - Investigation of a rotor- bearing system with bearing clearances and hertz contact by using a harmonic balance method JO - Journal of the Brazilian Society of Mechanical Sciences and Engineering A1 - Villa, Cristiano V. S. A1 - Sinou, Jean-Jacques A1 - Thouverez, Fabrice SN - 1678-5878 UL - 10.1590/S1678-58782007000100003 VL - 29 Y1 - 2007 PB - Brasil ER -