Identification of Behavior of Linearly Viscoelastic Materials from Experiments on Relaxation with Initial Area of Increasing Strain
- Authors: Martynova E.D.1, Stetsenko N.S.1
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Affiliations:
- Moscow State University
- Issue: Vol 47, No 1 (2018)
- Pages: 67-71
- Section: Reliability, Strength, and Wear Resistance of Machines and Structures
- URL: https://journals.rcsi.science/1052-6188/article/view/193761
- DOI: https://doi.org/10.3103/S1052618818010119
- ID: 193761
Cite item
Abstract
The problem of the determination of the relaxation functions of linearly viscoelastic materials is studied in experiments with a double-step strain process (ramp test); strain increases at the first stage and is constant at the second stage. The experimental data on the dependency of stresses on time are analyzed in three ways with a subsequent comparison of results. The first method requires fulfillment of the 10 rule and uses the backward recurrence method; the second is based on the formulas of approximate integration. In the third, it is immediately assumed that the relaxation function can be represented by a truncated Prony series. For the Maxwell linear model, the 10 rule was analyzed analytically.
About the authors
E. D. Martynova
Moscow State University
Email: stetsenkonina@mail.ru
Russian Federation, Moscow, 19991
N. S. Stetsenko
Moscow State University
Author for correspondence.
Email: stetsenkonina@mail.ru
Russian Federation, Moscow, 19991