Simulation, Analysis and Investigation of Rotary Draw Bending Process Using the Finite Element of ABAQUS Software

One of the methods of forming pipes is the tensile-rotational bending method, which can be considered the most widely used method of pipe bending, especially for thin-walled pipes. Today, the bending of thin-walled pipes (D<۲۰, D/t, pipe outer diameter and pipe thickness t) with a small radius of curvature (R/D, R > ۲) is a widely used production process in the automotive, military, and aerospace industries, which is used for bending parts It is used with high strength and at the same time light. Wrinkling, breaking, ellipticity of the cross-section, thickness changes during pipe bending and spring return are the main problems of this process. Thin-walled pipes made of various alloys such as aluminum, titanium and stainless steel are among these parts that are used in the industry with various bend radii and angles. The reduction of the weight and occupied volume of the pipes in the desired systems and mechanisms has made these parts with the minimum bend radius. be formed This article will first model the necessary models for simulating the bending process of the rotary pipe, and then determine the mechanical and physical properties required for ۳۰۴ steel and elastomers, apply the desired boundary conditions, and establish a regular network of elements for the desired analysis on zinc. Models will apply. Process simulation will be done using polyurethane and NBR elastomeric mandrels analytically and based on Abaqus finite element software on ۳۰۴ steels. Finally, after determining the optimal parameters in order to bend the pipe without tearing and breaking, we will simulate this process for pipes with different diameters and continue to examine parameters such as forces, stresses, and strains. We will pay for transfers.

کلیدواژه ها:

Rotary Draw Bending ، Finite Element ، Simulation ، ۳۰۴ Steel ، Mandrel