Abstract: Based on the improvement on the conventional sectional lumped parameter bond graph and introduction of the kinetic friction factor, a new sectional lumped parameter model using bond graphs for turbulent line is worked out. Experimental results showed that the goodness of identity between the simulation curves and the experimental curves is comparatively ideal, Which implies that the new model has adequate accuracy. The new model has less calculated parameters, simpler structure, and is suitable for modeling complex line systems.

Key words: Bond graphs, Kinetic friction factor, Sectional parameter model, Turbulent line, average pressure at an elastic microcontact, kinetic friction coefficient, normal contact stiffness, total strain, slow sliding surface