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An Intersurface Stress Tensor
MedLine Citation:
PMID:  9268514     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Distributed forces resulting from molecular interactions between macroscopic bodies are usually concentrated near surfaces. A new formulation has been developed that replaces these distributed body forces by effective surface tractions and is not limited by the geometrical restrictions of Derjaguin's approximation. It offers great computational simplification over the use of the body-force distribution. The body-force distribution is integrated and partitioned to various surface elements. The resulting expressions for surface traction involve a second-order tensor termed the intersurface stress tensor. It is a symmetric tensor defined for any body in terms of the intermolecular potential and the shape of the body. It acts much like the internal stress tensor; the surface traction vector on a surface introduced into its field is the inner product of the tensor and the surface normal. The new surface formulation reduces to Derjaguin's approximation for the case of a half-space with a plane surface. Properties of the new tensor are explored. Actual components are derived for several geometries.
Authors:
Jagota; Argento
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  191     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  1997 Jul 
Date Detail:
Created Date:  1997-08-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  326-36     Citation Subset:  -    
Affiliation:
Central Research and Development, The DuPont Company, Wilmington, Delaware, 19880-0356
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