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Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems


Kodvanj, Janoš; Beer, Rudolf; Jecić, Stjepan
Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems // Computational Methods in Contact Mechanics VI / Brebbia, Carlos A. (ur.).
Southampton, Boston: WIT Press, 2003. str. 157-165


Naslov
Fixing the spatial photoelastic - photoplastic effect by ionising irradiation applied to contact problems

Autori
Kodvanj, Janoš ; Beer, Rudolf ; Jecić, Stjepan

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Computational Methods in Contact Mechanics VI

Urednik/ci
Brebbia, Carlos A.

Izdavač
WIT Press

Grad
Southampton, Boston

Godina
2003

Raspon stranica
157-165

ISBN
1-85312-963-1

Ključne riječi
Photoelasticity, ionising irradiation, freezing method

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekt / tema
0120004

Ustanove
Fakultet strojarstva i brodogradnje, Zagreb