6533b858fe1ef96bd12b62c6
RESEARCH PRODUCT
Optimal Blankholder Force Path in Sheet Metal Forming Processes: An Al Based Procedure
Livan FratiniFabrizio MicariR. Di Lorenzosubject
Engineeringbusiness.industryMechanical EngineeringProcess (computing)Forming processesMechanical engineeringProcess designStructural engineeringIndustrial and Manufacturing EngineeringFinite element methodvisual_artTearingvisual_art.visual_art_mediumProcess windowDeep drawingbusinessSheet metaldescription
Abstract Blankholder force plays a fundamental role in the deep drawing process mechanics since it controls, by friction, the material flow into the die cavity. The availability of computer controlled hydraulic presses in the industries promoted a new research field focused on the definition of optimal BHF histories, function of the punch displacement; such studies were aimed to the determination of the so called “process window”, i.e. the BHF path which permits to obtain the maximum height sound component avoiding both wrinkling and tearing. In the paper a design procedure is proposed in order to determine the optimal BHF path in an axisymmetric deep drawing process: in particular, a closed-loop control system based on the fuzzy reasoning has been set up and interfaced with a FEM code. The determined BHF path has been experimentally verified assessing the effectiveness of the proposed approach.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 | CIRP Annals |