Thermal fracture of a model of ceramic catalysator

• Autorzy: Wesołowski Z.
• Języki publikacji: EN

Abstrakty

EN

Grains in form of circles are connected by elastic joints. Grains expand thermally, but do not deform elastically. The joints deform elastically, but do not expand thermally. The special situation is considered when the composite consists of only two kinds of grains, first kind with larger and the second kind with smaller expansion coefficient. The grains are randomly distributed in the specimen. All joints are equal. The specimen is free of external load. The uniform temperature increases from zero and leads to internal stresses. If the stress exceeds some fixed limits the joint breaks down and for all later instants the stress equals zero. The number of damaged joints and thermal stresses is calculated as a function of the proportion of the two kinds of grains.

Słowa kluczowe

EN

thermal stresses; porous material; damage

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 1998
• Tom: Vol. 46, nr 2
• Strony: 177--186
• Opis fizyczny: Bibliogr. 2 poz., 6 rys.

Twórcy

autor

Wesołowski Z.

• Institute of Mechanics, Świętokrzyski University of Technology, Ave. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland.