Nonlinear mechanical model of the shaft of a roll forming mill and parameter identification
| Autor: | Yury Vetyukov, Matthias Lamprecht, Martin Leonhartsberger, Friedrich Bleicher, Emin Kocbay |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Materials science 02 engineering and technology Metal sheet Industrial and Manufacturing Engineering Physics::Fluid Dynamics 020901 industrial engineering & automation 0203 mechanical engineering medicine Mill Roll forming business.industry Mechanical Engineering Process (computing) Stiffness Structural engineering Physics::Classical Physics Computer Science Applications Shear (sheet metal) Nonlinear system 020303 mechanical engineering & transports Control and Systems Engineering medicine.symptom business Software Beam (structure) |
| Zdroj: | The International Journal of Advanced Manufacturing Technology. 112:3363-3375 |
| ISSN: | 1433-3015 0268-3768 |
| DOI: | 10.1007/s00170-020-06412-5 |
| Popis: | Roll forming is a continuous process in which a moving metal sheet passes through numerous pairs of opposing forming rolls. The shafts of the roll forming mill are equipped with these rolls and must be set up and aligned to achieve the required final profile of the sheet. The practically relevant task of predicting the profile geometry of this incremental rolling process with varying characteristics of the metal sheet entering the mill requires an accurate description of the stiffness behavior of the shaft with rolls, which is the most compliant part of the roll forming mill. In this paper, the measured force-deflection characteristic of the shaft without rolls is compared with predictions of various theoretical models, followed by the adoption of the shear deformable beam model of the shaft with nonlinear elastic supports in the bearings. The coefficients of the cubic stiffness characteristics of the rotational springs as well as the effective length between the supports are identified based on the experimental data for the deflections, measured along the shaft for various loading levels. The theoretical predictions are obtained via the nonlinear finite element model of the shaft. The model thus provided shows high accuracy compared with the measurements. The paper’s results serve as a foundation for models to predict the stiffness of shafts with rolls. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |