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Pregled bibliografske jedinice broj: 116698

Poglavlje/Rad u knjizi

Autori: Kodvanj, Janoš; Beer, Rudolf; Jecić, Stjepan
Naslov: Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems
( Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems )
Knjiga: Computational Methods in Contact Mechanics VI
Urednik/ci: Brebbia, Carlos A.
Izdavač: WIT Press
Grad: Southampton, Boston
Godina: 2003
Serija: Computational and Experimental Methods, Vol 8
Raspon stranica:: 157-165
ISBN: 1-85312-963-1
Ključne riječi: photoelasticity, ionising irradiation, freezing method
( photoelasticity, ionising irradiation, freezing method )
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 this method temperatures above the glass temperature of the used polymer must be applied. But in this case Poisson’ s ratio of the polymers are practically the same as in plasticized zones which may be the case in the contact area. This means that by using the classical freezing method it is not possible to distinguish between the elastic and the plasticized zones of the model. However to distinguish between these two zones an iterative examination procedure of the photoelastic– photoplastic information is needed. The mentioned features were already shown in Jecic [3], but the in Beer [1] introduced new materials open additional possibilities in modelling more complex contact problems. In this paper the essential roles of adequate calibration steps are shown and demonstrated by some examples.
Projekt / tema: 0120004
Izvorni jezik: eng
Kategorija: Znanstveni
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