Simulation and analysis of the equivalent law of work of P-s curve of anchor pile;

According to the grey theory,the author attempts to predict both t-s and P-S curves of the test and obtain the similar settlement which traditionally gained by slow load test.

By using the data of pull-out tests of anchor rod,we have discussed the use of the nonequidistance GM(1,1)model for simulating the P-S curve of anchor rod and predicting the ultimate capacity of anchor rod,in the same time,we also discussed if we can predict the ultimate capacity of anchor rod by using the data of anchor rod pull-out tests before breakage.

The estimation of gear s fatigue life using the modified P-S-N curve;

Determination of the p-S-N curve for bending fatigue of automobile transmission gear;

The P-S-N curve of 45 steel is obtained by means of fatigue statistical experiment method,on the basis of experimental results,the reliability analysis for different mean stress is performed and the changeable regularity for mid-value S-N curve and P-S-N curve with 99.

A probabilistic nominal stress approach is proposed based on Miner s cumulative fatigue damage rule,the p-S-N curves of the material and.

A unified classical maximum likelihood approach for estimating P-S-N curves of the three commonly used fatigue stress-life relations, namely three parameter, Langer and Basquin, is presented by extrapolating the classical maximum likelihood method to the Langer relation.