Open AccessCreep mathematical model on the example of early age concrete
Author(s) -
Yuriy Yakubovskiy,
V I Kolosov,
Irina Donkova,
Sergey O. Kruglov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/972/1/012054
Subject(s) - creep , kernel (algebra) , basis (linear algebra) , decomposition , interval (graph theory) , series (stratigraphy) , experimental data , structural engineering , materials science , mathematics , geology , geometry , engineering , composite material , statistics , ecology , paleontology , combinatorics , biology
The objective of the study is development of a creep kernel recording form, which allows obtaining representations for creep curves calculation. Based on the elastic-creeping body theory a possibility of the high-rate creep movement analytical study has been shown. A creep kernel, which contains a formula to describe the aging material properties, has been built. Essential stages of the proposed creep kernel formation have been given. The correspondence of the proposed calculations to real processes has been proved by a comparison with experimental data. In the numerical implementation, decomposition of integration elements into power series has been used. A possibility of calculating functions for a long time interval has been shown. Creep kernel parameters have been determined on the basis of experimental data of early age concrete samples by minimizing the standard deviation of theoretical and empirical values.