Energy-absorption properties of foam-filled circular tubes subjected to dynamic axial crushing;

Energy-absorption properties of foam-filled circular tubes subjected to axial crushing;

Experimental study on forced heat convection for circular tubes with crossed air flow;

Influence of lubrication on flange forming by upsetting extruding tube;

This paper presents a technology of tube drawing and rolling with long mandrel and roller die, describes its economical benifit, the conditions for setup this process, the theory of deformation rules, and the estimation of force and energy.

The stratified flow and the law of drag reduction for non-Newtonian fluids in pipe;

New model of stratified laminar flow and drag reduction law in pipe;

Numerical research on the structures in turbulent pipe flow;

The calculating of electric parameters for induction heating of round pipe workpieces;

A mathematical model,which can be used to quantitatively calculate the limiting length of semi-solid A356 alloy rheological filling in round pipe,was deduced by analyzing the mechanics of semi-solid alloy rheological filling.

The movable matrix module of the bending die for round pipe was drawn precisely according to the rotation property of the particle.

The selection of Δ D and Δ S values in the design of molds for drawing round tubes by K D K S method was done according to peoples experience in the past.

This paper reccomends K D K S method for the design of the technological process for drawing round tubes,which can bring about a good match between the reduction of tube diameter and that of wall thickness during drawing passes so as to control the quality of the finished products.

The fin efficiency of continuous fin on round tube is analyzed by finite element method,and the effect of fin thickness and tube distance on staged and serial round tube continuous fins is presented.