It is much more simplify to study the influences of the connect stiffness for the million – kilowatt – class nuclear power turbogenerator by the Reduce – Analysis method which is presented by the anthors.

A applied method:the Reduce-transfer matrix method,which is used to study the influence on the shafting critical speeds by the connect stiffness,is presented in the paper.

The effect of the joint stiffness of back web members on the dynamic characteristics of the mast system for oil drilling is investigated by analyzing a real mast of the type ZJ20.

By means of the transfer matrix method and a program of the computer algebraic system, the paper obtains the equation with the joint stiffness as the unknown.

In this paper, the authors introduce a fictitious interconnecting system by using its fictitious link stiffness, and present a new modal stiffness coupling method.

The stiffness at the end of the damper is particularly stressed.

By attaching an auxiliary surface between the assembled parts, defining the material properties of the auxiliary surface and connecting the assembled parts with the Multi-Point Constraints(MPC) technique, the practical connecting stiffness of the assembly structure can be simulated .

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.