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Prof. Zbigniew Olesiak, PhD, DSc

Doctoral thesis
1955Stan naprężenia i odkształcenia sprężystego zginanej cienkościennej rury o przekroju soczewkowym 
supervisor -- Prof. Witold Nowacki, PhD, DSc, IPPT PAN
supervisor -- Prof. Krzysztof Stencel, PhD, DSc, UW
4 
Professor
1963Title of professor
Recent publications
1.Frydrychowicz W.♦, Matysiak S.♦, Olesiak Z., Mieszane zagadnienia brzegowe termosprężystości ośrodka mikropolarnego, Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.76, pp.1-43, 1977
2.Olesiak Z., Sneddon I.N.♦, The distribution of surface stress necessary to produce a penny-shaped crack of prescribed shape, International Journal of Engineering Science, ISSN: 0020-7225, DOI: 10.1016/0020-7225(69)90066-4, Vol.7, No.8, pp.863-873, 1969
Abstract:

The problem considered is that of determining the distribution of surface stress p(ρ) = −σzz(ρ, 0) necessary to maintain the penny-shaped crack in the shape uz(ρ, 0) = w(ρ), 0 Affiliations:

Olesiak Z.-IPPT PAN
Sneddon I.N.-other affiliation
3.Olesiak Z., Plastic zone due to thermal stress in an infinite solid containing a penny-shaped crack, International Journal of Engineering Science, ISSN: 0020-7225, DOI: 10.1016/0020-7225(68)90023-2, Vol.6, No.2, pp.113-125, 1968
Abstract:

Dugdale's model is here employed to find the width of the plastic zone surrounding a crack which is being opened by the application of a flux of heat or temperature acting on crack surfaces. It is shown that the ratio of the crack diameter to the diameter of the plastic zone varies depending on the initial diameter of the crack, material constants, and the ratio of the flux of heat to the yield limit of the material. The pertinent formulae for the components of the displacement vector have been derived for a constant flux and for a flux which is a function of radius represented in the form of a Pourier-Bessel series. The ease of the prescribed temperature is reduced to the case of the given flux of heat.

Affiliations:
Olesiak Z.-IPPT PAN
4.Nowacki W., Olesiak Z., Płyta kołowa na obwodzie częściowo utwierdzona zupełnie i częściowo swobodnie podparta, ARCHIWUM MECHANIKI STOSOWANEJ, ISSN: 0373-2029, Vol.8, No.2, pp.233-255, 1956
5.Nowacki W., Olesiak Z., Stateczność powłoki walcowej wzmocnionej żebrami, Rozprawy Inżynierskie, ISSN: 0867-888X, Vol.4, No.1, pp.4-22, 1956
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