Pseudo-physical modeling of drawbead in stamping simulations
US8831914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | May 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2113/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The stamping of a metal sheet within a stamping die is simulated. The die includes a drawbead running perpendicular to a draw direction. A plurality of successive states are generated for iteratively representing the metal sheet from a blank shape to a final stamped shape. The drawbead is represented as a two-dimensional flat band within a model of the stamping die. Forces acting on the metal sheet are calculated at each successive state to define a next successive state. The calculating step includes a restraining force of the drawbead acting on the metal sheet calculated in response to a predetermined function of a length of the metal sheet engaged in the flat band in respective states. The particular width and location of the flat band achieve improved accuracy of estimating the restraining force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.