This paper studies round steel tubular members on the changing of their ultimate load-carrying capacity under general damaged conditions through numerical integral method.

This paper studies round steel tubing members,which are widely used in power transformation structures,on the changing of their ultimate bearing capacity under general damaged conditions through numerical integral method.

Rate dependent crystal plasticity model together with a new time integration algorithm has been implemented into ABAQUS6.

In this paper, the numtrical integration algorithm of pseudodynamic testing is discused in detial,which includes the explicit algorithm,implicit algorithm and special integration algorithm used in substructure technigques.

First,the paper puts forward a simple and practical numerical integrationto calculate the vibration characteristics of bladed disk.

This paper introduces the numerical integration of the pseudo -dynamic test, and points out that it is inevitable that the pseudo -dynamic test has experimental error, and probes into the methods for controlling the experimental error.