Numerical and experimental study on the effect of die design on sheet hydroforming process

الملخص EN

In this paper, a FEM is used to determine the effect of die design on sheet hydroforming process.

The hydraulic deformation is a process for sheet forming by applying hydraulic pressurized liquid on the sheet.

This process is characterized by its ability to give homogenous strain distribution along the blank with highly mechanical properties.

To simulate deformation process and analyze the results theoretically, a special programmer for finite elements (Ansys15) has been used.

To prove rightness of numerical simulation, a die with the same dimensions of used die in research has been built.

The simulation of the sample deformation process has been performed by using circular plate of aluminum alloy (1435) with two different thickness (1)mm using four profile radius for lower die (2,4,6,8,10)mm and under effect of (10) KN blank holder force(BHF).

These parameters have been used to know the effect of die profile radius and blank holder force on the product in term of stresses distribution and wrinkling and tearing and average of thickness change along the length from the center of the sample to the final edge on the accuracy and the shape of final product.