Published: 01 January 1989
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Cite this document
The dynamic response of materials with existing flaw structures is the subject of the present investigation. In this paper, the cracked solid is described by a constitutive model based on continuum damage mechanics. The purpose of the analysis is to show that the constitutive model can predict many of the experimentally observed phenomena in these materials. This is demonstrated by treating a sample problem. The geometry and loading condition selected for this sample problem is that of a 45-deg inclined crack, centrally situated in a concrete panel and subjected to the action of a step tensile pulse. Damage localization and tension-softening have been observed. These results and their implications are discussed.
dynamic brittle fracture, continuum damage mechanics, concrete, inclined crack panel, localization of damage, tension softening, strain-rate effect
Member of the Technical Staff, Sandia National Laboratories, Albuquerque, NM