Analytic solution and numerical simulation of roll motion of TLD with two layer fluid;

For machining error of complex surface mold in electrical discharge machining(EDM) caused by electrode orbiting,a new compensation method based on free surface non-uniform offsetting of electrode was presented.

Geometry tolerance analysis in planar sway EDM;

In light of the operation of swing type freight car bogies abroad, two fundamental schemes of the swing bolster structure are put forward, and the structural analysis is made for the swing bolster structure and the support schemes.