Inspec keywords: helicopters; mechanical contact; failure (mechanical); gears; vibrations

Other keywords: meshing position; higher-order frequencies; PGT; meshing gear; high-frequency excitation; different meshing positions; position-correlated modal properties calculation method; gear damage; higher-order natural frequencies; gear failure; excitation frequency; gear meshing pair; corresponding engaging force responses; planetary gear train; meshing phase difference; high speed

Subjects: Vibrations and shock waves (mechanical engineering); Mechanical components; Mechanical engineering applications of IT; Civil and mechanical engineering computing; Mechanical drives and transmissions; Numerical analysis