Implementation of a constitutive model for anisotropic rocks based on modified Lade failure criterion

The strength anisotropy for inherent anisotropic rocks presents a challenge to simulate considering the influence of intermediate principal stress. Based on the modified Lade failure criterion, a new anisotropic modified Lade criterion combining an empirical equation is established and verified usin...

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Bibliographic Details
Published inScientific reports Vol. 13; no. 1; p. 3210
Main Authors Liu, Xiaotian, Deng, Yansheng, Zou, Baoping
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 24.02.2023
Nature Publishing Group
Nature Portfolio
Subjects
639/166/986
704/2151/431
Anisotropic rocks
Anisotropy
Civil engineering
Dynamic link libraries
Humanities and Social Sciences
Laboratories
Laboratory tests
multidisciplinary
Science
Science (multidisciplinary)
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Summary:The strength anisotropy for inherent anisotropic rocks presents a challenge to simulate considering the influence of intermediate principal stress. Based on the modified Lade failure criterion, a new anisotropic modified Lade criterion combining an empirical equation is established and verified using published experimental datasets of anisotropic rocks. The incremental constitutive model for anisotropic rocks is derived by using finite difference theory. The dynamic link library (DLL) module of the model is obtained by using the VC++ program, and then the model is validated against various laboratory test results. It is concluded that the proposed criterion and derived model can describe the strength anisotropy of inherent anisotropic rocks well.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-30257-z