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 methodDiscretizationFracture toughness
52Publications
13H-index
812Citations
Publications 51
Newest
#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 9
#1Haifeng Gao (TUT: Taiyuan University of Technology)H-Index: 1
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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#1Jianfeng Yang (Xi'an University of Science and Technology)H-Index: 6
#2Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 13
Last. Li Li (UW: University of Waterloo)H-Index: 4
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The present work conducted laboratory experiments of fracturing in fat coals, anthracites, and mudstones. Three different fluids were selected as the fracturing fluids, including water, liquid CO2 (L-CO2), and supercritical CO2 (Sc-CO2). The resulting fracture morphologies and fracture apertures of the coal specimens were investigated using 3D morphological scanning, and the permeabilities of the samples were measured before and after fracturing. The experimental results showed that the breakdow...
3 CitationsSource
#1Jianfeng Yang (TUT: Taiyuan University of Technology)H-Index: 6
#2Li LiH-Index: 4
Last. Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 13
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The influence of water content on mode I fracture toughness (KIc) of mudstones has been studied using semi-circular bend (SCB) specimens subject to three-point bendings. And the mudstone SCB specimens are divided into three types, including Type-A, Type-B and Type-C, corresponding to the three configurations of the bedding planes, including divider direction, arrester direction, and transverse direction, respectively. The test results show that the values of KIc for the three types of specimens ...
2 CitationsSource
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Chuang Lu (USTC: University of Science and Technology of China)H-Index: 1
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract This paper presents an acoustic topology optimization approach using isogeometric boundary element methods based on subdivision surfaces to optimize the distribution of sound adsorption materials adhering to structural surfaces. The geometries are constructed from triangular control meshes through Loop subdivision scheme, and the associated Box-spline functions that generate limit smooth subdivision surfaces are employed to discretize the acoustic boundary integral equations. The effect...
11 CitationsSource
#1Liu Zhenghe (TUT: Taiyuan University of Technology)H-Index: 1
#1Zhenghe Liu (TUT: Taiyuan University of Technology)H-Index: 1
Last. Jianfeng Yang (TUT: Taiyuan University of Technology)H-Index: 6
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3 CitationsSource
#1Chensen Ding (Hunan University)H-Index: 8
#2Rohit R. Deokar (UMN: University of Minnesota)H-Index: 6
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract After space discretization employing traditional dynamic isogeometric analysis of structures (composite type) with/without dissimilar materials, the issues that persist include either using numerically non-dissipative time integration algorithms that induces the high frequency participation (oscillations) in solution, or using dissipative algorithms that can dampen the high frequency participation but simultaneously induce significant loss of total energy of the system. To circumvent th...
10 CitationsSource
#1Weiguo Liang (TUT: Taiyuan University of Technology)H-Index: 14
#2Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 13
Last. Jianfeng Yang (TUT: Taiyuan University of Technology)H-Index: 6
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Hydraulic fracturing is regarded as a promising technology in exploiting unconventional natural gas. Compared to the enormous success achieved in shale-gas exploitation, the application of hydraulic fracturing in coal strata has not matured to a satisfactory level. The main reason is that the models commonly used in hydraulic fracturing in shales fail to reflect the quasi-brittle characteristics of coals. In this Chapter, laboratory experiments were conducted to establish the cohesive zone model...
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#1Jianfeng Yang (TUT: Taiyuan University of Technology)H-Index: 6
#2Li Li (UW: University of Waterloo)H-Index: 4
Last. Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 13
view all 3 authors...
The effect of water on fracture toughness in various modes of mudstones was investigated using semicircular bend (SCB) specimens exposed to three-point bendings. Natural mudstone specimens are obtained using a special coring method and are then classified into three types (A, B, and C) corresponding to three directions/configurations of bedding planes (divider, arrester, and transverse). The results show that the Type A (divider configuration) specimens possess the largest fracture toughness val...
5 CitationsSource
#1Leilei Chen (Xinyang Normal University)H-Index: 11
#2Haojie Lian (University of Luxembourg)H-Index: 13
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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Abstract The boundary element method (BEM) is a powerful tool in computational acoustics, because the analysis is conducted only on structural surfaces, compared to the finite element method (FEM) which resorts to special techniques to truncate infinite domains. The isogeometric boundary element method (IGABEM) is a recent progress in the category of boundary element approaches, which is inspired by the concept of isogeometric analysis (IGA) and employs the spline functions of CAD as basis funct...
32 CitationsSource