To identify the characteristics of wheel/rail contact irregularity in crossing zone of high-speed turnouts,a numerical model was set up based on the least distance searching method and analyzing the structures of point rail and wing rail.

Studies on the frictional temperature of wheel/rail contact are briefly reviewed.

Results,such as the wheel/rail contact force,contact status and wheel/rail stress distribu-tion,are obtained.

Creep traits analysis of wheel-rail contact about independently rotating wheels;

Through using the method of finite element parametric quadratic programming,the wheel-rail contact force was coustructed in different contact area and working performances with various loads.

Finite element analysis and application of friction damper tangential contact stiffness

Study on contact stiffness factor selection method in contact non-linear simulation

Based on truing model of saucer diamond-grinding wheel with cup wheel, the influence of contact stiffness between saucer wheel and cup wheel on the stability of the grinding system and grinding force was discussed, as well as verifying of the signal characteristic and changing rule of grinding force.

Research for contact rigidity of marine ME s base gasket;

Through alter the method on scraping contact surface between main spindle head and lathe frame, we may increase contact point and improve the contact rigidity.

Based on the theoretical analysis on some current connecting materials between the ship main engine and its base, the author holds that, in installing main engine of the same type, the casting epoxy shim shows the maximum contact rigidity, and the integral rectangular shim would be the next and the adjusting shim appears to be the minimum, which is not adopted to general circumstance.