Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 82-92 |
| Journal | International Journal of Mechanical Sciences |
| Volume | 88 |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- nip
- rubber blankets
- feeding
- rolling creep
- printing
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Feeding in rolling contact of layered printing cylinders. / Sorvari, Joonas (Corresponding Author); Parola, Markku.
In: International Journal of Mechanical Sciences, Vol. 88, 2014, p. 82-92.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Feeding in rolling contact of layered printing cylinders
AU - Sorvari, Joonas
AU - Parola, Markku
PY - 2014
Y1 - 2014
N2 - Many web handling processes involve nips through which the web passes. Due to contact deformations, the speed at which the nip cylinders feed the web may differ from the peripheral speed of the cylinders. This paper examines in detail the feeding phenomenon in the case of layered cylinders. In particular, we focus on offset printing cylinders which are covered by a thin rubbery layer. We begin our analysis by considering existing limiting solutions of thin layered cylinders undergoing small strains, and thereafter study the large deformation rolling contact problem using the finite element method. It turns out that the feeding tendency of layered cylinders is dominated by the compressibility of the layer. However, feeding characteristics of layered cylinders are not constant but rather depend on the applied indentation: an increase in indentation may even alter the feeding tendency of the cylinders. The results also indicate that the feeding type affects web strain. Consequently, we conclude that in order to attain better web handling, the feeding characteristics of the cylinders should be known.
AB - Many web handling processes involve nips through which the web passes. Due to contact deformations, the speed at which the nip cylinders feed the web may differ from the peripheral speed of the cylinders. This paper examines in detail the feeding phenomenon in the case of layered cylinders. In particular, we focus on offset printing cylinders which are covered by a thin rubbery layer. We begin our analysis by considering existing limiting solutions of thin layered cylinders undergoing small strains, and thereafter study the large deformation rolling contact problem using the finite element method. It turns out that the feeding tendency of layered cylinders is dominated by the compressibility of the layer. However, feeding characteristics of layered cylinders are not constant but rather depend on the applied indentation: an increase in indentation may even alter the feeding tendency of the cylinders. The results also indicate that the feeding type affects web strain. Consequently, we conclude that in order to attain better web handling, the feeding characteristics of the cylinders should be known.
KW - nip
KW - rubber blankets
KW - feeding
KW - rolling creep
KW - printing
U2 - 10.1016/j.ijmecsci.2014.07.008
DO - 10.1016/j.ijmecsci.2014.07.008
M3 - Article
VL - 88
SP - 82
EP - 92
JO - International Journal of Mechanical Sciences
JF - International Journal of Mechanical Sciences
SN - 0020-7403
ER -