Abstract
Results of work describing several aspects of specifying and using friction for design and control of sheet metal forming processes are presented. First, modifications of the strip tension test typically used to measure coefficient of friction are described and results presented which show that creation of new surfaces during stretching produces changes in friction coefficient. Second, an axisymmetric finite element model of cup drawing is used to demonstrate the effect of the value of coefficient of friction used in the process simulation on drawing force. Measured punch force is compared with calculated force using various coefficient of friction values including friction coefficients measured in strip tension tests. Third, a transducer which can measure loads acting parallel to and perpendicular to its surface is described and results of its performance characterization are presented. Such transducers can be embedded in process tooling to measure local values of coefficient of friction and the restraining forces imposed on work material flow for process control.
| Original language | English (US) |
|---|---|
| Title of host publication | Manufacturing Science and Engineering |
| Publisher | ASME |
| Pages | 1213-1226 |
| Number of pages | 14 |
| Volume | 2-2 |
| State | Published - Dec 1 1995 |
| Event | Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition - San Francisco, CA, USA Duration: Nov 12 1995 → Nov 17 1995 |
Other
| Other | Proceedings of the 1995 ASME International Mechanical Engineering Congress and Exposition |
|---|---|
| City | San Francisco, CA, USA |
| Period | 11/12/95 → 11/17/95 |