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The response of viscoelastic materials to small deformations

โœ Scribed by Joseph Yerushalmi; Stanley Katz; Reuel Shinnar

Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
1010 KB
Volume
24
Category
Article
ISSN
0009-2509

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โœฆ Synopsis

Ah&act

-The mam features of the theory of hnear vlscoelastlclty are revlewed The time-dependent behavior of any vlscoelastlc matenal can be described m terms of a complex vlscoslty i(s) which must possess a certam specific analytic character, consldered as a function of the complex vanable s It 1s shown that the complex vlscoslty representing the dynamic response of vlscoelastlc flulds to oscillatory motion supenmposed upon steady shear can not be evaluated m terms of a spectrum of relaxation times and can not be compared on such basks to the complex vlscoslty measured m the vsmlty of eqmhbnum Any non-hnear theory of vlscoelastlclty should be compatible with the hnear theory This cntenon IS dlscussed, it IS shown that a non-hnear constltutlve equation of the Rlvhn-Encksen type mvolvmg only a fimte number of denvatlves of the stram rate should not be regarded as RECENT

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