An Improved Form of SPH Method for Simulating the Thermo-Mechanical-Damage Coupling Problems and Its Applications

Yu, Shuyang; Ren, Xiaobing; Zhang, Jixun; Sun, Zhaohua

doi:10.1007/s00603-021-02753-z

Cited by 14 publications

(3 citation statements)

References 32 publications

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“…In order to solve astrophysics problems, the SPH method was first proposed by Ginold and Monaghan [ 21 ] and Lucy [ 22 ]. With the rapid development of SPH, it is widely used in more practical engineering problems, such as fluid mechanics [ 23 , 24 ], heat conduction [ 25 , 26 , 27 ], and blasting-induced rock cracking [ 28 , 29 , 30 ]. In addition, SPH has been widely used in numerical studies related to hydro-mechanical coupling.…”

Section: Introductionmentioning

confidence: 99%

An Extended Hydro-Mechanical Coupling Model Based on Smoothed Particle Hydrodynamics for Simulating Crack Propagation in Rocks under Hydraulic and Compressive Loads

Tang

et al. 2023

Materials

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A seepage model based on smoothed particle hydrodynamics (SPH) was developed for the seepage simulation of pore water in porous rock mass media. Then, the effectiveness of the seepage model was proved by a two-dimensional seepage benchmark example. Under the framework of SPH based on the total Lagrangian formula, an extended hydro-mechanical coupling model (EHM-TLF-SPH) was proposed to simulate the crack propagation and coalescence process of rock samples with prefabricated flaws under hydraulic and compressive loads. In the SPH program, the Lagrangian kernel was used to approximate the equations of motion of particles. Then, the influence of flaw water pressure on crack propagation and coalescence models of rock samples with single or two parallel prefabricated flaws was studied by two numerical examples. The simulation results agreed well with the test results, verifying the validity and accuracy of the EHM-TLF-SPH model. The results showed that with the increase in flaw water pressure, the crack initiation angle and stress of the wing crack decreased gradually. The crack initiation location of the wing crack moved to the prefabricated flaw tip, while the crack initiation location of the shear crack was far away from the prefabricated flaw tip. In addition, the influence of the permeability coefficient and flaw water pressure on the osmotic pressure was also investigated, which revealed the fracturing mechanism of hydraulic cracking engineering.

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Section: Introductionmentioning

confidence: 99%

An Extended Hydro-Mechanical Coupling Model Based on Smoothed Particle Hydrodynamics for Simulating Crack Propagation in Rocks under Hydraulic and Compressive Loads

Tang

et al. 2023

Materials

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“…In recent years, the SPH-FEM coupling method in numerical simulation overcomes the shortcomings of traditional hydraulic impact experiments, and its method can be used to observe the damage of the inner and outer surfaces of the material, as well as to divide the damage of the material into different levels, so it is used by many scholars to study the problems of impact damage involved in fluid-solid coupling. For example, Wang et al 13 used the SPH-FEM coupling method to study the damage evolution law and damage mechanism of rocks under the action of hydraulic impact; Salman and Yıldırım 14 analyzed the erosion damage of water jet impacting glass plate based on the SPH-FEM coupling method; Yu et al 15 used the SPH-FEM coupling method to simulate the rock damage process, which avoided the mesh distortion problem of numerical simulation well; Ren et al 16 studied the damage law of the longitudinal and transverse directions inside the rock body based on SPH-FEM coupling algorithm; Wu et al 17 based on the SPH-FEM coupling method established a rock blasting model and explored the mechanism of the action of stress waves leading to rock cracking; Zhong et al 18 used the SPH-FEM coupling method to study the impact resistance of concrete, and confirmed the advantages of SPH-FEM coupling method.…”

Section: Introductionmentioning

confidence: 99%

Study on unit energy damage and prediction model of concrete under hydraulic impact

Zhu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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Based on the SPH-FEM (Smoothed Particle Hydrodynamics – Finite Element Method) coupling method, the hydraulic impact concrete model was established, and the numerical model was verified by hydraulic impact concrete experiments and CT (Computed Tomography) scanning experiments. Secondly, this paper proposes the comprehensive damage factor of unit energy consumption, and explores the damage law of unit energy consumption of concrete under different parameters and optimizes the hydraulic parameters by using image processing techniques. Finally, this paper analyzes the crushing process of concrete under hydraulic impact, and predicts the unit energy consumption comprehensive damage by the multiple linear regression model, the decision tree model and the GBDT (Gradient Boosting Decision Tree) model. The results show that the effects of different parameters on the comprehensive damage of unit energy consumption of hydraulic impact concrete changes in stages, and the concrete particles will completely fail when the concrete damage under hydraulic action accumulates to a certain degree and the von mises stress reaches a certain peak. Secondly, the prediction of the GBDT model is the best, and the study provides a theoretical basis and technical reference for the efficient and economic utilization of hydraulic impact concrete technology.

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“…Smoothed particle hydrodynamics (SPH) is a grid-free numerical calculation method proposed by Lucy (1977) and Ginold and Monaghan (1977), and is mainly used in the field of astrophysics. With the development of meshless numerical methods, SPH has been widely used in the fields of fluid flow (Ren et al 2022a, b), mechanical and hydraulic behavior (Gharehdash 2018;Gharehdash et al 2019), two-phase coupling (Sun 2016;Yu et al 2021;Mu 2022a;Yu et al 2022) and crack propagation (Chakraborty and Shaw 2013;Sun et al 2014;Islam and Peng 2019;Gharehdash et al 2020;Gharehdash et al 2021;Mu et al 2022b, c;Mu et al 2023;Yu et al 2023a, b). In recent years, researchers have gradually applied the SPH method to the field of gas seepage, obtaineding satisfactory numerical results.…”

Section: Introductionmentioning

confidence: 99%

A gas-mechanical-damage coupling model based on TLF-SPH method to simulate gas seepage in fractured coal

Mu,

Zhang,

Liu

et al. 2023

Preprint

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The coupled calculation of gas seepage in fractured coal is always the focus and difficulty of computational mechanics. Therefore, combined with the phase field theory, the gas seepage model of fractured coal is developed under the framework of smoothed particle hydrodynamics (SPH). The accuracy of the seepage model based on partial differential equation (PDE) with constant coefficient is verified by a reference example, and the simulation results agree well with the analytical solutions. Meanwhile, the seepage characteristics of gas in homogeneous coal based on PDE with constant and variable coefficients are analyzed, respectively, with their numerical errors compared. Then, based on the gas seepage model of fractured coal, the effects of heterogeneity, defect opening and inclination on gas seepage in coal are studied, respectively. In addition, considering the influence of coal deformation and pre-existing defects on gas seepage, a gas-mechanical-damage coupling model for gas seepage simulation of fractured coal is proposed by using SPH method with total Lagrange formula (TLF-SPH). Subsequently, the permeability evolution and gas seepage characteristics of borehole surrounding rock under different conditions (such as overburden load, extraction pressure, borehole radius and initial gas pressure) are investigated, revealing the seepage-mechanical coupling mechanism of fractured coal during gas extraction. This work provides important theoretical support for mine gas extraction and gas outburstdisaster prevention technology.

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An Improved Form of SPH Method for Simulating the Thermo-Mechanical-Damage Coupling Problems and Its Applications

Cited by 14 publications

References 32 publications

An Extended Hydro-Mechanical Coupling Model Based on Smoothed Particle Hydrodynamics for Simulating Crack Propagation in Rocks under Hydraulic and Compressive Loads

An Extended Hydro-Mechanical Coupling Model Based on Smoothed Particle Hydrodynamics for Simulating Crack Propagation in Rocks under Hydraulic and Compressive Loads

Study on unit energy damage and prediction model of concrete under hydraulic impact

A gas-mechanical-damage coupling model based on TLF-SPH method to simulate gas seepage in fractured coal

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