On certain fundamental issues in continuum damage mechanics

In this article, we discuss three fundamental issues in continuum damage mechanics. First, we investigate the nature of the damage process. For this purpose, we dissect the expression of the effective stress into an infinite geometric series and introduce several stages of damage that we call primar...

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Bibliographic Details
Published inJournal of mechanical behaviour of materials Vol. 21; no. 1-2; pp. 33 - 36
Main Authors Voyiadjis, George Z., Kattan, Peter I.
Format Journal Article
LanguageEnglish
Published De Gruyter 01.11.2012
Subjects
Continuum damage mechanics
Damage
Damage mechanics
Deformation
Materials science
Mechanical properties
small damage
Stresses
undamageable
undamageable material
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Summary:In this article, we discuss three fundamental issues in continuum damage mechanics. First, we investigate the nature of the damage process. For this purpose, we dissect the expression of the effective stress into an infinite geometric series and introduce several stages of damage that we call primary damage, secondary damage, tertiary damage, etc. The second issue to be discussed is the problem of small damage. In this regard, we introduce a new definition of the damage variable that is suitable for small-damage cases. Finally, we discuss the new concept of undamageable materials. These are currently hypothetical materials that maintain a zero value of the damage variable throughout the deformation process. It is hoped that these proposed new types of materials will open the way to new areas of research in both damage mechanics and materials science.
Bibliography:ArticleID:jmbm-2012-0021
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Corresponding author: George Z. Voyiadjis, Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
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jmbm-2012-0021.pdf
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0334-8938
2191-0243
DOI:10.1515/jmbm-2012-0021