A result of the increased usage of advanced high strength steels (AHSS) for stamped automotive body structures is an increase in press forces and tool wear, as well as component geometrical issues, such as springback and curl. This study investigates a methodology of forming a dual-phase steel component in a ‘softened’, or annealed, condition, then subsequently heat-treating and quenching the c...

An experimental database of springback and twisting U-shaped elongated structures is available from a previous study. The materials are copper alloys: pure Cu, CuBe2, CuFe2P, provided in thin sheets thickness around 0.1 mm. After deep-drawing rectangular blanks, which can be aligned with the tools or slightly misaligned, tool withdrawal, structure exhibits an opening section (2D springback) (3D...

Springback in sheet bending is a well-defined phenomenon; however, variation of springback difficult to control causing quality problems especially mass-produced goods such as home appliances. As an alternative straight flanging, the rotary die process offers reduced well geometric variation; there little knowledge literature. The effects parameters on behavior flanging and applied appliance si...

Springback is defined as undesirable shape change that occurs after forming process upon unloading due to the occurrence of elastic recovery part. Aluminum alloy with high content magnesium such A6061 preferred for formability limit be used in automotive industry. However, generally springback turns out a drawback. Many researchers have examined by considering parameters bent angle, die shoulde...

With the increasing requirements of automotive lightweighting, metal/CFRP laminates are increasingly used. In this paper, Al/CFRP were prepared using an integrated hot press curing method, and optimum conditions determined single-lap shear test at 130 °C for 45 min. The effects fiber lay-up, forming speed, metal layer thickness on bending springback investigated V-shaped Abaqus finite element a...

This paper proposes an Intelligent Process Model (IPM), founded on the concept of data mining, for predicting springback in the context of sheet metal forming, in particular, Single Point Incremental Forming (SPIF). A limitation with the SPIF process is that the application of the process results in geometric deviations, which means that the resulting shape is not necessarily the desired shape....

Sheet-metal forming is one of the most important manufacturing processes in automotive industry. This study proposes a multiobjective optimisation scheme that controls both sheet-metal formability and springback. First, mechanical properties DP590 steel were characterised to obtain parameters limit diagram (FLD) DP590. Then, FLD, thinning rate, average springback selected as quality evaluation ...

With a view to reducing the springback and twist of PEEK during incremental forming process, ultrasonic vibration is introduced into polymer thermal single-point process (SPIF). In this study, effects temperature on formed parts are investigated. Several modified tool trajectories developed, influence trajectory also studied. Finally, microstructures analyzed by XRD. The results show that incre...

The principle of this process is shown in Figure 1. Only one die (the stretch-block) is needed, which contains the shape of the part. The sheet, clamped with two gripper jaws, is formed around the stretch-block, when the grippers move along the given trajectories. Accurately shaped products can be obtained with minimal springback, when stretch deformation is added to the bending deformation of ...