A numerical framework for continuum damage - discontinuum transition

• Autorzy: Borst R. de , Abellan M. A.
• Języki publikacji: EN

Abstrakty

EN

A framework is derived for the proper and consistent description of a discontinuity (a crack) as the result of a damaging process in a continuous medium. The damaging process in the continuous medium is described using a gradient-enhanced damage theory, so that well-posedness of the boundary-value problem is maintained until the damage process is completed and a discontinuity arises. At that moment the partition-of-unity property of finite element shape functions is exploited to partition the displacement field into two continuous fields, separated via a Heaviside function. It is demonstrated that the additional boundary conditions that arise in a gradient-enhanced damage theory, can be accounted for in a natural and transparent manner.

Słowa kluczowe

EN

damage process; crack; numerical analysis; continuous medium; gradient-enhanced damage theory

PL

proces zniszczenia; pęknięcie; analiza numeryczna

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2002
• Tom: Vol. 54, nr 5-6
• Strony: 377--387
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Borst R. de

autor

Abellan M. A.

• Koiter Insitute Delft, Delft University of Technology, P.O. Box 5058, NL-2600 GB Delft, The Netherlands,