Mpf. Sutcliffe et Pj. Rayner, EXPERIMENTAL MEASUREMENTS OF LOAD AND STRIP PROFILE IN THIN STRIP ROLLING, International journal of mechanical sciences, 40(9), 1998, pp. 887-899
Experiments are described in which plasticine strips are rolled using
elastomer rolls. Conditions cover the range from ''thick strip'' behav
iour, in which roll elastic deformations are small, to ''thin strip ro
lling'', in which elastic deformations of the rolls are very significa
nt. Results provide the first direct experimental confirmation of the
thin strip rolling model proposed by Fleck el al. (Proc. Instn Mech. E
ngrs B 206 (1992) 119-131). Strip profiles clearly show a short region
of reduction at the inlet to the bite and a central region which is r
elatively flat, in accord with the theory. The profiles do not however
show a short region of reduction at the exit as predicted. For interm
ediate strip thicknesses the measured loads are in reasonable agreemen
t with theory. For the thinnest strips, although the form of the depen
dence of load on reduction and inlet strip thickness is as predicted b
y theory, the measured loads are almost an order of magnitude lower th
an predicted. It is suggested that this is caused either by difference
s between the assumed rigid-perfectly plastic strip and the real const
itutive behaviour of the plasticine, or by errors in treating the roll
s as elastic half-spaces, an approximation which is accurate for indus
trial metal rolling, but is not good for the conditions of these exper
iments. (C) 1998 Elsevier Science Ltd. All rights reserved.