Analysis of Strain Softening Effect of Structural Clay using Constitutive Model

DOI

10.2991/978-94-6463-415-0_42How to use a DOI?

Keywords

Strain Softening; Structural Clay; Constitutive Model

Abstract

In this paper, the effects of strain softening of structural clay and the corresponding influencing factors are systematically analyzed by modifying the existing constitutive model to optimize energy extraction technology. Initially, the strain softening process and the existing constitutive model commonly used in the study of strain softening of structural clay are introduced. Then, through the construction of an analytical constitutive model, some simulations are designed on a virtual platform to investigate the strain softening process of structural clay. Finally, the strain softening effect of structural clay under various conditions is discussed. It is found that structural clays typically exhibit hardness at the top and softness at the bottom during energy extraction. To address this issue, this study optimizes the analytical formula for structural clay, considering factors such as upper hard clay thickness, lower soil strength, and soil strain softening effect. A predictive model is therefore developed to estimate the vertical ratio change of upper hard clay and lower soft clay, accounting for the strain softening effect of structural clay. Simulation results indicate a stress-softening fit of approximately 90% for the proposed constitutive model, which suggests that the model proves reliable and is effective in analyzing the strain-softening characteristics of structural clay. The research findings of this paper contribute to advancing existing energy extraction methods and serve as a reference for optimizing analytical approaches in studying the strain-softening effect and influencing factors of structural clay using constitutive models.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Kun Shan
AU  - Yanhao Zheng
PY  - 2024
DA  - 2024/05/14
TI  - Analysis of Strain Softening Effect of Structural Clay using Constitutive Model
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 393
EP  - 406
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_42
DO  - 10.2991/978-94-6463-415-0_42
ID  - Shan2024
ER  -