Based on the geometrical nonlinear theory of system consisted of bars, the formula of nodal displacement increment really causing the deformation of spatial beam element in its motion from t to t+Δt moment is derived in spatial co-rotational coordinate system.

he forging process is a problem concerning large plastic deformation, so that this paper adoptedthe comoving coordinate to follow the tracks of flowing particls, and used the energy method to calculate, stepby step, increment of displacement, effective strain field, etc.

Research about independent coordinate system conversion from Gaussian coordinate system

This paper introduces the conception of five-face machining center coordinate system,and expounds the conversion method,the calculation of coordinate system conversion and edition mode of five-face machining center coordinate system.

The search beam stabilization technique and the concerned coordinate system conversion are key techniques of self-propelled antiaircraft weapon system equipped with the vehicular search radar.

It is pointed out in this paper that the p-q、ip-iq and d-q techniques used in active power filter (APF) design are the methods based on rotor coordinate and the fan-in vector theory is the method based on stator coordinate.

The subsonic hovering flow fields of Caradonna-Tung rotor are simulated by this way,in which the equations are solved on rotating coordinates and the meshes are constructed using overlap grids.