Haojie Lian
Taiyuan University of Technology
Computer Aided DesignMathematical optimizationGeologyMathematical analysisFinite element methodComposite materialMesh generationMaterials scienceCADHydraulic fracturingIsogeometric analysisApplied mathematicsShape optimizationLinear elasticityMathematicsComputer scienceFracture (geology)CoalMechanicsBoundary (topology)Boundary element methodStructural engineeringDiscretizationFracture toughness
56Publications
14H-index
810Citations
Publications 50
Newest
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Zhongwang Wang (Xinyang Normal University)
Last. Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 14
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This paper simulates the propagation of hydraulic fractures under constant fluid pressure using the isogeometric analysis based on boundary element methods (BEM) i.e. the so called isogeomtric BEM. Due to the seamless integration between computer aided design (CAD) and numerical analysis, the isogeomtric BEM eliminates the meshing procedure and geometric errors, and explicitly parametrizes the crack propagation path. Graded knot insertion near the crack tip is used to effectively capture the str...
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#1Liu Zhenghe (TUT: Taiyuan University of Technology)H-Index: 1
#2Jun Yang (TUT: Taiyuan University of Technology)
Last. Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 14
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Abstract In this technical paper, large-scale true triaxial tests were conducted with sandstone specimens to investigate several factors that determine whether hydraulic fractures can propagate from the tips of axial prefabricated cracks (pre-cracks). Specifically, we investigated the influence of pre-crack inclination angles on hydraulic fracture initiation locations and how the critical pre-crack angle varies with different confining stresses, fluid viscosities, and leak-off effects. The exper...
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#1Liu Zhenghe (TUT: Taiyuan University of Technology)H-Index: 1
#2Shaohua Wang (TUT: Taiyuan University of Technology)
Last. Yang Dong (TUT: Taiyuan University of Technology)
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Directional hydraulic fracturing by prefabricating longitudinal (axial) cracks on the sides of boreholes is an effective technique to control hard roof and ensure mining safety. In the present work, a true triaxial hydraulic fracturing experimental device was used to study the influence of prefabricated crack (pre-crack) parameters (including inclination angle and crack length), fracturing fluid viscosity, and mechanical characteristics of rocks on directional hydraulic fracturing with axial pre...
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#1Jianfeng Yang (Xi'an University of Science and Technology)H-Index: 6
#2Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 14
Last. Vinh Phu Nugyen (Monash University, Clayton campus)
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Abstract The present work studies the Park–Paulino–Roesler (PPR) model, a unified potential-based cohesive zone model (CZM), for mixed mode I/II fractures in different ranked coals, including weakly caking coals, fat coals and anthracite, by using disk-shaped compact tension (DC(T)) tests and punch-through shear (PTS) tests. The PTS experiments showed that with the increase in coal rank, the initial shear stiffness and shear peak loads grow and the maximum tangential crack opening displacement (...
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#1Chensen Ding (University of Exeter)
#2Kumar K. Tamma (UMN: University of Minnesota)H-Index: 30
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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This work models spatially uncorrelated (independent) load uncertainty and develops a reduced-order Monte Carlo stochastic isogeometric method to quantify the effect of the load uncertainty on the structural response of thin shells and solid structures. The approach is tested on two demonstrative applications of uncertainty, namely, spatially uncorrelated loading, with (1) Scordelis–Lo Roof shell structure, and (2) a 3D wind turbine blade. This work has three novelties. Firstly, the research mod...
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#1Jianfeng Yang (Xi'an University of Science and Technology)H-Index: 6
#2Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 14
Last. Li Li (UW: University of Waterloo)H-Index: 4
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Abstract The present paper investigates the effects of CO2-saturation and confining pressures on the fracture toughness of carbon dioxide saturated bituminous coals. Three-point bending experiments were performed with semi-circular coal specimens (SCB) after they were immersed in different CO2 pressures. The experimental results show that the pure modes I and II fracture toughnesses of coal samples gradually decrease with the growth of CO2-saturation pressure. Additionally, the fracture toughnes...
2 CitationsSource
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#1Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 14
#1Haojie Lian (TUT: Taiyuan University of Technology)
Last. Pengfei Wu (TUT: Taiyuan University of Technology)
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We applied a shape optimization algorithm based on an explicit interface tracking method to optimize underground caverns. The objective chosen in the present work is to minimize the strain energy. The algorithm can search the optimized solution in a large design space automatically, achieve large-scale shape deformation, and obtain smooth boundaries in the optimized shapes. Through the numerical examples, we verify the feasibility of the method applied in the underground cavern optimization, and...
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#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 1
#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 9
Last. Toshiro Matsumoto (Nagoya University)H-Index: 22
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Abstract In this paper, a computational methodology for the band structure analysis of 2D acoustic phononic structures based on the isogeometric boundary element method(IGABEM) is studied. IGABEM not only improves the accuracy of numerical model, but also retains the geometric accuracy and makes the pre-processing procedure relatively simpler for models designed through using computer-aided design(CAD) softwares. B-splines, which are widely employed in computer graphics and CAD industry, are use...
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#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Y. Zhang (Xinyang Normal University)H-Index: 1
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract Isogeometric boundary element method is a computer simulation algorithm that can directly utilize the data of a geometric model represented by its surface. Catmull-Clark subdivision surfaces are a widely used technique in 3D computer graphics to construct complicated geometries. In the present work, we combine Catmull-Clark subdivision surfaces with isogeometric boundary element method to simulate acoustic propagation in semi-infinite domains. The present method can produce fast and hig...
3 CitationsSource