| dc.creator |
Troyani Nando |
|
| dc.creator |
Montano Luis |
|
| dc.date |
1999 |
|
| dc.date.accessioned |
2013-05-30T11:17:20Z |
|
| dc.date.available |
2013-05-30T11:17:20Z |
|
| dc.date.issued |
2013-05-30 |
|
| dc.identifier |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-73861999000400008 |
|
| dc.identifier |
http://www.doaj.org/doaj?func=openurl&genre=article&issn=01007386&date=1999&volume=21&issue=4&spage=655 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/jspui/handle/123456789/4489 |
|
| dc.description |
A model for predicting temperature evolution for automatic controling systems in manufacturing processes requiring the coiling of bars in the transfer table is presented. Although the method is of a general nature, the presentation in this work refers to the manufacturing of steel plates in hot rolling mills. The predicting strategy is based on a mathematical model of the evolution of temperature in a coiling and uncoiling bar and is presented in the form of a parabolic partial differential equation for a shape changing domain. The mathematical model is solved numerically by a space discretization via geometrically adaptive finite elements which accomodate the change in shape of the domain, using a computationally novel treatment of the resulting thermal contact problem due to coiling. Time is discretized according to a Crank-Nicolson scheme. Since the actual physical process takes less time than the time required by the process controlling computer to solve the full mathematical model, a special predictive device was developed, in the form of a set of least squares polynomials, based on the off-line numerical solution of the mathematical model. |
|
| dc.publisher |
The Brazilian Society of Mechanical Sciences |
|
| dc.source |
Journal of the Brazilian Society of Mechanical Sciences |
|
| dc.subject |
Temperature Prediction |
|
| dc.subject |
Thermal Contact |
|
| dc.subject |
Finite Elements |
|
| dc.subject |
Metal coiling |
|
| dc.title |
A temperature predicting model for manufacturing processes requiring coiling |
|