Mesoscopic theory of microcracks

• Autorzy: Papenfuss C. , Van P. , Muschik W.
• Języki publikacji: EN

Abstrakty

EN

The mesoscopic concept is a way to deal with complex materials with an internal structure within continuum mechanics. It consists of extending the domain of the balance equations by mesoscopic variables and of introducing a local distribution function of these variables as a statistical element. In our case microcracks are modelled as penny-shaped and are completely characterized by their diameter and the unit normal to the crack surface. Two examples of crack dynamics are given as well as a possible definition of a damage parameter. Orientational order parameters (fabric-alignment tensors) are defined and balance-like dynamic equations for them are derived.

Słowa kluczowe

EN

mesoscopic theory; microcrack; damage parameter; distribution function; mesoscopic balance equation

PL

mikropęknięcia; teoria mezoskopowa; parametr zniszczenia; funkcja rozkładu; równanie równowagi mezoskopowej

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2003
• Tom: Vol. 55, nr 5-6
• Strony: 481--499
• Opis fizyczny: Bibliogr. 34 poz.

Twórcy

autor

Papenfuss C.

• Technische Universitat Berlin, Institut fur Mechanik, Strasse des 17. Juni 10623 Berlin

autor

Van P.

• Budapest University of Technology and Economics Department of Chemical Physics 1521 Budapest

autor

Muschik W.

• Technische Universitiit Berlin Institut fur Theoretische Physik Hardenbergstr. 36 10623 Berlin

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