Based on different friction coefficients between touchable feet and touchable face when actuator moved toward right and left,a suit of inertial linear actuator driven by piezoelectric stack with changeable friction coefficients was designed and manufactured with piezoelectric stack and mass as power devices.

The effects of three metal ions on the cultured tissue from mantle and epipodial tentacle of Haliotis discus hannai with Ca~(2+),Mg~(2+) and Zn~(2+) ions which are added into the M199 and RPMI-1640 medium are studied respectively.

Check ring joint structure design in underwater skirt pile gripper based on body contact nonlinear finite element analysis;

Dynamic simulation of the contact between drill stem and well wall;

Contact Nonlinear Finite Element Analysis on the Pressing Block Tooth in Underwater Skirt Pile Gripper;

In addition, the contacting problem of plates was analyzed in this paper by using the penalty method, the contacting force of plates was derived, and the new methods for searching crateria were proposed.

In order to solve the contact problem of different parts of the blank, a new algorithm for contacting judgment is proposed.

Non-Hertz contact problems are studied according to multi-level multi-integration,and are computed with program.

The contact element method and original stress method were used to analyze the elastic plastic contact problem of wheel/rail with measured surface micro roughness.