The micromechanics‐based rate‐dependent constitutive model of flawed rocks at intermediate strain rate

Zhou, Xiaoping; Yang, Haiqing; Berto, Filippo

doi:10.1111/ffe.13701

Cited by 3 publications

(2 citation statements)

References 45 publications

(85 reference statements)

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“…The deformation behavior of rocks can be represented by the complete stress–strain curve (i.e., the constitutive model) 5,6 . Therefore, a constitutive model that can accurately shed light on the rock deformation characteristics is imperative to provide scientific guidance for excavation design and safe operation of rock constructions 7,8 …”

Section: Introductionmentioning

confidence: 99%

“…5,6 Therefore, a constitutive model that can accurately shed light on the rock deformation characteristics is imperative to provide scientific guidance for excavation design and safe operation of rock constructions. 7,8 The macroscopic deformation and failure of rocks are induced by the progressive development and accumulation of internal damage, 9,10 among which the compaction point, yield point and peak point are three key demarcation points in the stress-strain curve to identify the distinct mechanical properties of rocks. 11,12 For example, the yield point (corresponding to the yield strength) is the maximum value of the long-term strength of rock materials 13 and can be used to quantify the damage status of surrounding rocks in engineering projects such as tunnel excavation.…”

Section: Introductionmentioning

confidence: 99%

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A semiempirical constitutive relationship for rocks under uniaxial compression considering the initial damage recovery

Xie

Han

Zhou

2023

Fatigue Fract Eng Mat Struct

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A better understanding of the constitutive model and damage evolution law is the premise to ensure their feasibility and practicability in rock engineering projects. In this paper, a damage constitutive relationship, which can reflect the initial damage recovery, is established based on the generalized equivalent strain principle and the initial tangent modulus. A Weibull distribution-based model is also established to represent the deformation after the compaction point. A piecewise expression of the complete stress-strain curve of rocks under uniaxial compression is thereby obtained by the combination of the above two constitutive models. Finally, the effectiveness of the piecewise constitutive relationship is verified using uniaxial compression test data of different types of rocks. The results show that the theoretical curves are in good agreement with the experimental curves. Parameters of the proposed relationship are relatively to be derived, making it convenient for engineering applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A semiempirical constitutive relationship for rocks under uniaxial compression considering the initial damage recovery

Xie

Han

Zhou

2023

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

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Tensile mechanical properties and fracture evolution characteristics of sandstone containing parallel pre-cracks under dynamic loading

Feng

Yang

Bai

et al. 2023

Theoretical and Applied Fracture Mechanics

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A one‐dimensional phenomenological constitutive model of shape memory alloys considering the cyclic degradation of two‐way memory effect

Zhang,

He,

Zhu

et al. 2024

Fatigue Fract Eng Mat Struct

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This study introduces a one‐dimensional phenomenological constitutive model designed to describe two‐way shape memory effect (TWSME) and its associated cyclic degradation. The model utilizes the logistic function to formulate the phase transformation equation, incorporates the expansion of key parameters into their respective fatigue functions to characterize the fatigue phenomenon, and integrates a phase transformation rate regulation function into the differential form of the phase transformation equation. This integration facilitates the control over the entire phase transformation process and the simulation of incomplete transformations. The model is distinguished by its comprehensive functionality, simple form, ease of calculation, and the clear and direct influence of key parameters. Furthermore, it offers a degree of flexibility because each function within the framework is replaceable. The simulation of the TWSME strain and recovery stress hysteresis loop deformation has been successfully conducted, enabling the description of internal hysteresis loops caused by incomplete transformation. The validity of the model is corroborated by comparing it with existing experimental results.

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The micromechanics‐based rate‐dependent constitutive model of flawed rocks at intermediate strain rate

Cited by 3 publications

References 45 publications

A semiempirical constitutive relationship for rocks under uniaxial compression considering the initial damage recovery

A semiempirical constitutive relationship for rocks under uniaxial compression considering the initial damage recovery

Tensile mechanical properties and fracture evolution characteristics of sandstone containing parallel pre-cracks under dynamic loading

A one‐dimensional phenomenological constitutive model of shape memory alloys considering the cyclic degradation of two‐way memory effect

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