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
#1Jianfeng Yang (TUT: Taiyuan University of Technology)H-Index: 6
#2Weiguo Liang (TUT: Taiyuan University of Technology)H-Index: 14
Last. Li Li (UW: University of Waterloo)H-Index: 4
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1 Citations
#1Yuedu Chen (TUT: Taiyuan University of Technology)H-Index: 5
#2Weiguo Liang (TUT: Taiyuan University of Technology)H-Index: 14
Last. Vinh Phu Nguyen (Monash University, Clayton campus)H-Index: 26
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Abstract The fracture geometric characteristics (FGC) have considerable influence on fluid flow in the fractured rock mass. The present work took experimental approaches to investigate the quantitative relationship between the FGC of a rough-walled fracture (RWF) and its hydraulic properties, particularly for the deformable fractures subjected to applied stresses. Taking into account the complexity of the FGC in realistic practice, the FGC studied in this work are comprised of three types: the s...
40 CitationsSource
#1Vinh Phu Nguyen (Monash University)H-Index: 26
#2Haojie Lian (TUT: Taiyuan University of Technology)H-Index: 13
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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This paper revisits the problem of computational modelling of a fluid-driven fracture propagating in a permeable porous medium using zero-thickness flow cohesive interface elements. Both cases of continuous and discontinuous pressure field across the fractures are implemented in a unified formulation. The paper provides computational aspects of hydraulic fracture modelling such as mesh generation, execution time, convergence and numerical integration issues. We show that Newton-Cotes quadrature ...
60 CitationsSource
#1Haojie Lian (DTU: Technical University of Denmark)H-Index: 13
#2Asger Nyman Christiansen (DTU: Technical University of Denmark)H-Index: 6
Last. Niels Aage (DTU: Technical University of Denmark)H-Index: 18
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This work shows that a combined shape and topology optimization method can produce optimal 2D designs with minimal stress subject to a volume constraint. The method represents the surface explicitly and discretizes the domain into a simplicial complex which adapts both structural shape and topology. By performing repeated topology and shape optimizations and adaptive mesh updates, we can minimize the maximum von Mises stress using the p-norm stress measure with p-values as high as 30, provided t...
42 CitationsSource
#1Haojie Lian (Cardiff University)H-Index: 13
#2Pierre Kerfriden (Cardiff University)H-Index: 14
Last. Stéphane BordasH-Index: 65
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Abstract We develop a T-spline isogeometric boundary element method (IGABEM) (Simpson et al., 2012; Scott et al., 2013; Simpson et al., 2014) to shape sensitivity analysis and gradient-based shape optimization in three dimensional linear elasticity. Contrary to finite element based isogeometric analysis (IGA) approaches, no parametrization of the volume is required. Hence, the iterative optimization algorithm can be implemented directly from CAD without any mesh generation or postprocessing step...
68 CitationsSource
#1Haojie Lian (Cardiff University)H-Index: 13
#2Pierre Kerfriden (Cardiff University)H-Index: 21
Last. Stéphane Bordas (Cardiff University)H-Index: 65
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The present work addresses shape sensitivity analysis and optimization in two-dimensional elasticity with a regularized isogeometric boundary element method (IGABEM). Non-uniform rational B-splines are used both for the geometry and the basis functions to discretize the regularized boundary integral equations. With the advantage of tight integration of design and analysis, the application of IGABEM in shape optimization reduces the mesh generation/regeneration burden greatly. The work is distinc...
72 CitationsSource
#1Haojie Lian (Cardiff University)H-Index: 13
#2Stéphane Bordas (University of Luxembourg)H-Index: 65
Last. Pierre Kerfriden (Cardiff University)H-Index: 21
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#1Haojie Lian (Cardiff University)H-Index: 13
#2Robert J. Simpson (Glas.: University of Glasgow)H-Index: 19
Last. Stéphane Bordas (University of Luxembourg)H-Index: 65
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However, IGA needs a domain discretization but CAD only constructs the surface of the geometry. This confliction can be solved naturally by isogeometric boundary element methods (IGABEM). IGABEM is a combination of boundary integral equation and CAD, and only requires quantities pertaining to the boundary of the problem for analysis. The method has been applied using NURBS for 2D linear elasticity [7] and for shape optimisation in 3D [2]. More recently, a BEM T-spline discretisation strategy has...
#1Haojie Lian (Cardiff University)H-Index: 13
#2Stéphane Bordas (University of Luxembourg)H-Index: 65
#1Jack Hale (University of Luxembourg)H-Index: 9
#2Stéphane Bordas (University of Luxembourg)H-Index: 65
Last. Haojie LianH-Index: 13
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