Study of contact force between drill string and borehole wall in constant-curvature wellbores;

Prediction of workpiece-fixture contact forces based on multiple clamping;

Analysis of gripping contact force and force-closure of manipulator

Considering frictions between a workpiece and the fixture elements, a mechanical model is formulated aiming at analyzing the effect of multiple clamping forces and their application sequences on contact forces.

The trig contact between pantographare and catenary is the key problem of receiving stable contact forces, Whether the contact forces are steady is the important condition of measuring the collecting electricity curren; By analysing every the pantographare and catenary parameters in this paper, the firsthand picture of not even coefficient of contact forces are shown in this paper.

Calculation of Interface Width and Contact Stress of Spinning Top Roller and Roller;

The calculation of contact stress of rock bit floating ring journal bearing under disalignment;

Numerical simulated analysis of the contact stress on the sealing rubber of the packer;

Calculation of contact pressure on TM and VAMACE premium connection casing couplings;

The effect of articular step-off and neniscectomy on joint alignment and contact pressures for fractures of the lateral tibial plateau;

Single chip microcomputer-based inspection of catenaries-pantograph contact pressure;

Research on contacting pressure in ball-spinning;

A pin-on-disk test rig was used to investigate the influence of sliding speed and contacting pressure on the friction and wear behavior of 45CrNi pair under dry sliding condition.

The progressive cavity pump(PCP) distortions,forces and contacting instance of different pressure with the finite element analysis method are analyzed,the PCP two-dimension finite element model is constituted,the stress distributing correspond to the PCP stator rubber and the contacting pressure of the stator and rotor are obtained in this paper.

This paper focuses on the contacting stress between the plunger and the seal ring,and analyzes the effect of the seal ring structure parameters on the contacting stress.

On the basis of theoretical study on the high speed cylindrical roller bearing a finite element analysis was carried out on the common steel bearings and the ceramics bearings, and the influence of rotary speed on the contacting stress and the equivalent stress.

According to the calculation on the contacting stress and the linear speed of the gear in the hoist of the 16t-30m portal crane,the N460 heavy duty industrial gear oil was selected instead of the recommended lube oil in instruction book.