To provide a friction evaluating method of a sliding bearing for improving evaluation accuracy by evaluating friction of the sliding bearing so as to approach an actual sliding state.
When evaluating the friction of the sliding bearing in a sliding state, a friction coefficient in the optional time or a predictor of frictional force is expressed as a function shape of a load, a speed and a repetition index. [Formula 1] μ(t) = fR(N(t),v(t),R(t)) R(t) is an index by numerically expressing a repetition progress degree. The load N(t) is a load acting at a right angle on a sliding bearing surface, and the speed v(t) is a sliding speed in the parallel direction to the sliding bearing surface. A repetition frequency, a surface temperature of a sliding material or a sliding plate and cumulative sliding displacement from a start of sliding are used as the repetition index.
TAKAGI MASAMI
KATSUTA SHOJI
NISHIMOTO SHINYA
