HDJS - Ⅱ mold two melt top bridges employ fix and join melt structure, fix melt not have cone process demand , be apt to make, operate same ordinary alike, possess of trait structure simple and nimble convenient and safe reliable .

Online real-time teting system of the displacement in double-wedge cross wedge rolling;

Elastic stability analysis of tapered beam with I-section;

The displacement mode of a tapered beam is derived according to the tapered members with I sections used very often for steel structures, on the basis of which corresponding shape function and stiffness matrix are obtained by finite element theory and a symbolic software.

In this paper, the equilibrium differential equation including the effects of constant axial force and shear deformation was established for tapered beams.

Tapered beams are widely used in steel structures, especially in portal frames.