Abstract--L-shaped beams subjected to pure elastic-plastic bending are investigated thoroughly. The shifting and rotating of the neutral axis of the beam during bending and springback after unloading are described mathematically, while the curvatures of the beam before and after springback are given. The method proposed in this paper is valuable both to the further theoretical studies of the as...

Springback is an unavoidable problem in cold-forming processes and affects the efficiency quality of processing outer sheets for ships. Therefore, effective control prediction sheet-forming springback particularly important field cold-bending processes. To this end, paper presents research on based a study multipoint process combined with intelligent algorithms, as well production ship-hull pla...

Three different mechanisms are presented to allow for the representation of 3D surfaces in such a way that key features are retained while at the same time ensuring compatibility with prediction (classification) techniques. The application domain is sheet metal forming. The representations are designed to capture the nature of the surface to be manufactured and predict deformations, known as “s...

For ̄ exible manufacture of a doubly curved sheet metal, a new sheet metal forming process is proposed that uses a movable punch set composed of two pairs of lower support punches and one upper centre punch. The process is characterized by ̄ exibility compared with the existing conventional processes because it does not require any complex-shaped die and the loss of material is minimized by unc...

Abstract Both advanced high strength steels and aluminum alloys gained increasing popularity because of the constant effort to meet social pressure reducing vehicle weight while keeping their safety. The ratio between material is much higher when compared other materials but, springback after forming one disadvantages these materials, particularly exhibiting twisting side wall curl, which are t...