Analysis of Creep Strains and Stress Relaxation in Thin-Walled Tubular Members Made of Linear Viscoelastic Materials. 1. Superposition of Shear and Volume Creep

The problem of creep strains and stress relaxation analysis in thin-walled tubular members made of linear viscoelastic materials under combined tension and torsion loading is solved. The solution is obtained using viscoelastic models in the form of superposition of shear and volume creep. The creep...

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Bibliographic Details
Published in:International applied mechanics 2020-03, Vol.56 (2), p.156-169
Main Authors: Golub, V. P., Pavlyuk, Ya. V., Reznik, V. S.
Format: Article
Language:English
Subjects:
Applications of Mathematics
Classical Mechanics
Creep (materials)
Exponential functions
High density polyethylenes
Physics
Physics and Astronomy
Shear creep
Stress relaxation
Viscoelastic materials
Viscoelasticity
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Summary:The problem of creep strains and stress relaxation analysis in thin-walled tubular members made of linear viscoelastic materials under combined tension and torsion loading is solved. The solution is obtained using viscoelastic models in the form of superposition of shear and volume creep. The creep and relaxation kernels are represented by fractional-exponential functions. The solutions are validated experimentally by analyzing longitudinal, transverse, and shear creep strains as well as the relaxation of normal and tangential stresses in thin-walled tubular members made of organic glass and high-density polyethylene.
ISSN:1063-7095
1573-8582
DOI:10.1007/s10778-020-01011-z