Constitutive Model for Shale Rock under High Strain Rates

International Journal of Progressive Sciences and Technologies

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Title Constitutive Model for Shale Rock under High Strain Rates
Creator Rehan, M. Saad
Impact loads; Hydraulic Fracturing; Dynamic Compressive Properties; Viscoelastic Elements

Description Modeling the response of Shale rock towards impact loads imparted during hydraulic fracturing is essential in order to explain its strain rate sensitive behavior. In this paper, modified constitutive model, proposed by Zhu-Wang-Tang, is used to analyze the dynamic compressive properties of outcrop Shale rock of Khyber Pakhtunkhwa, Pakistan. The model comprises of multiple elastic and viscoelastic elements and is capable of predicting the dynamic behavior over a wide range of strain rates. Using the method of least squares, the model has been fitted to the experimental stress-strain curves obtained under the strain rates of the order of 102 s-1 and the parameters of the model are determined. It was found that the experimental and fitted curves were in good agreement.
Publisher International Journals of Sciences and High Technologies
Date 2021-04-06
Type info:eu-repo/semantics/article
Peer-reviewed Article
Format application/pdf
Source International Journal of Progressive Sciences and Technologies; Vol 25, No 2 (2021); 480-484
Language eng
Rights Copyright (c) 2021 M. Saad Rehan

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