The forming defects of parts mainly include fracture, springback, thermal expansion, and rough surface during electric hot incremental forming, in which the springback expansion directly affects dimensional accuracy parts. In this paper, combined optimization process parameters unsupported distances was proposed to control sheet process. predictive model major errors established through respons...

A simplified (one step) method called “inverse approach” (IA) for the numerical analysis of the stamping process has been continuously developed by the authors since the end of the eighties. In the present paper we recall the main finite element formulation aspects, for an efficient estimation of the large elastoplastic strains encountered in deep drawing operations. The capabilities of the cod...

The concept of shape-manifold is applied here to the optimization of a deep drawn blank considering parameterized tool geometries. By adopting this concept, a realistic post-springback shape of the blank closest to a given ideal target shape is obtained. The global approach is fully automated, from the generation of the tool geometries, to the identification of the optimized design parameters. ...

Springback is considered as one of the most common problems in metal forming processes, which poses an inaccuracy product angle during assembling parts. The estimation springback difficult to predict for formed parts since it depends on many factors such mechanical properties, sheet thickness, and die angle. In this work, experimental investigation drawbead different material thicknesses use lu...

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...

Servo presses achieve high formability by using different punch motion curves, thereby increasing their applicability in conventional processing fields. In this study, the curves of servo were optimized, and effects on springback U-shaped sheet metal explored. Subsequently, optimal curve was determined, effect after investigated. Different proposed simulated for comparison with results methods,...

Abstract The influence of part geometry on twist springback was studied by a A-pillar inner plate. structural parameters divided into cross-section and longitudinal axis, the response surface model established to analyze influences various springback. results show that straight line 1, 3, angle 2 4 cross section have significant effect In addition, increases continuously with increasing total l...

Abstract Flexible Roll Forming (FRF) is an advanced manufacturing process that can be used to form long and complex part families from hard materials for the automotive truck industry. However, depending on complexity material strength shape defects such as end flare, springback twist occur. In this work a high (Sled runner) produced 3 steels; component combines variations in width depth. The o...

This paper combines adaptive network fuzzy inference system (ANFIS) and finite element method (FEM) to study the die shape optimal design in sheet metal bending process. At first, the explicit dynamic FEM is used to simulate the sheet metal bending process. After the bending process, the springback is analyzed by using the implicit static FEM to establish the basic database for ANFIS. Then, the...