Author(s)

J. Kodvanj, R.J. Beer and S. Jecic

Abstract

Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems J. Kodvanjl, R. J. ~ e e r ~ , S. ~ecic' 'University of Zagreb, Croatia. 2Vienna University of Technology, Austria. Abstract Using photoelastic analysis of three-dimensional states of deformation in polymeric model materials requires the fixation of the photoelastic effect. In Beer [1,2] were shown that by fixing of the photoelastic effect using ionising irradiation it is possible to avoid the well known disadvantages off the classical freezing method. With the proposed method it is not necessary to enlarge the scaling-factor for the displacement which is very important for modelling the contact area. Further more, fixing with ionising irradiation can be carried out without elevated temperatures. This is the most important advantage compared with the freezing method because with ths method temperatures above the glass temperature of the used polymer must be applied. But in ths case Poisson

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