Abstract
The aquadraw deep drawing operation with an hydraulic counter-pressure where the die cavity is filled of an hydraulic hid is analysed taking into account as well as the hydraulic How between the die and the sheet metal as the deformation of the sheet material. The analysis developed in the paper focuses on the main parameters that controls the process. An hydrodynamic study of the pressure in the die cavity and an analysis of the flow between the die cavity and the sheet metal are presented and qualitative results are given that agree experimental ones. The deformation of the sheet metal is analysed using a finite element approach raking into account the fluid pressure distribution. The results of the numerical simulations in the case of axisymmetric parts are compared with experimental ones obtained on an instrumented aquadraw press and the agreement is good. The results obtained can be used for a better control of the die cavity pressure to optimize the thickness strain in the formed shape for given process parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 305-308 |
| Number of pages | 4 |
| Journal | CIRP Annals - Manufacturing Technology |
| Volume | 42 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 |
| Externally published | Yes |
Keywords
- Aquadraw process
- Finite element method
- Flow control