In recent years, hydroforming process has been applied in different industries such as aerospace, automotive and military industries due to its advantages, such as high dimensional accuracy, capability of forming complicated parts and high drawing ratio. Hydrodynamic deep drawing with radial pressure is one type of hydroforming process. In this paper, forming of cylindrical cups in hydrodynamic...

Product design in the early stages requires a more quantitative process to ensure that simulation study's outcome will meet expectations. The purpose of this study was determine whether manufacturing software package could effectively evaluate and validate conceptualised blank tooling manufacture sizeable complex- shaped aluminium alloy aircraft panel using die sheet hydroforming. Blank tool co...

This paper discusses a systematic approach to implement the principles of Flat Pattern Analysis FPA for folding sheet metal products. The paper starts by highlighting the needs for the vehicular structure forming process with respect to the main production line requirements through using Quality Function Deployment QFD matrix. Additionally, the potentials of fold forming for sheet metal parts i...

The introduction on large scale of high strength materials in automotive industry provided the possibility to reduce weight and produce safer cars. But at the same time these materials yield more springback than deep drawing steels. This can lead to problems designing the right tools for the forming process. This paper presents a method for the optimization of sheet metal forming parameters in ...

Abstract Appearance of an automobile is one the appealing points to customers. Character ridgelines in outer panels such as hood and door play important role make automobiles attractive, a sharp character ridgeline which has ridge small curvature radius much more preferred blunt ridgeline. However, skid line, kind appearance defect, apt generate along press forming Although it well-known that l...

Abstract A thermoplastic polyurethane (TPU) series for automotive panels with high durability have been newly synthesized using the reacting process based on polyester polyol (BTG), polycaprolactone triol (PCL), hexamethylene diisocyanate (HDI), isophorone (IPDI), and 1,4-butanediol chain extender as a function of NCO/OH ratio (NCO index). The dependence varying NCO index TPUs tensile strength ...

J. Kliber, VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic Metal forming can be regarded as a process during which materials are treated by “force” and “heating” under a certain external load and boundary condition (loading mode, rate of loading, constraint condition, geometry, contact friction condition, temperature field). As well as in f...