Tiantang Yu
Hohai University
AlgorithmMathematical analysisFinite element methodComposite materialPlate theoryBoundary value problemEstimatorMaterials scienceVibrationExtended finite element methodStiffnessIsogeometric analysisApplied mathematicsMaterial propertiesMathematicsComputer scienceFracture (geology)Numerical analysisStress intensity factorRate of convergenceMechanicsBasis functionStructural engineeringDiscretizationNatural frequencyBuckling
80Publications
32H-index
2,380Citations
Publications 79
Newest
#1Satoyuki Tanaka (Hiroshima University)H-Index: 22
#2Hirotaka Suzuki (Hiroshima University)H-Index: 2
Last. Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
view all 6 authors...
Two-dimensional (2D) in-plane mixed-mode fracture mechanics problems are analyzed employing an efficient meshfree Galerkin method based on stabilized conforming nodal integration (SCNI). In this setting, the reproducing kernel function as meshfree interpolant is taken, while employing the SCNI for numerical integration of stiffness matrix in the Galerkin formulation. The strain components are smoothed and stabilized employing Gauss divergence theorem. The path-independent integral (J-integral) i...
45 CitationsSource
#1Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
#2Thom Van Do (Le Quy Don Technical University)H-Index: 11
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 9 authors...
Abstract Composite functionally graded materials (FGMs) are fabricated and most commonly used to operate in high temperature environments, where are expected to have significant changes in properties of constituent materials. The FGMs inherently withstand high temperature gradients due to low thermal conductivity, core ductility, low thermal expansion coefficient, and many others. It is essential to thoroughly study mechanical responses of FGMs and to develop new effective approaches for accurat...
115 CitationsSource
#1Tiantang Yu (Hohai University)H-Index: 32
#2Shuohui Yin (Hohai University)H-Index: 18
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 16
view all 6 authors...
Abstract We combine the isogeometric analysis, the level set and a simple first-order shear deformation theory (S-FSDT) to form a new effective and accurate approach for simulating free vibration and buckling problems of laminated composite plates with cutouts. The problem domain is discretized using non-uniform rational B-spline (NURBS) basis functions, which are utilized for geometry and field variables approximation. In S-FSDT, the shear locking effect is no longer valid and more interestingl...
113 CitationsSource
#1Tiantang Yu (Hohai University)H-Index: 32
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 4 authors...
In this work, a new approach in the framework of the local partition of unity finite element method (XFEM) to significantly improve the accuracy of natural frequency in free vibration analysis of cracked Reissner–Mindlin plates is presented. Different from previous approaches, the present formulation is expected to be more accurate and effective in modeling cracked plates by integrating the stabilized discrete shear gap (DSG) into the XFEM setting. Intensive numerical results at low frequency de...
30 CitationsSource
#1Kuldeep SharmaH-Index: 25
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 6 authors...
Abstract An array of equidistant inclined cracks present in 2-D piezoelectric strip is numerically analyzed using distributed dislocation method (DDM). The piezoelectric strip is a cutout of an infinite domain so that the width-to-crack-length ratio is about 100 times larger than the aspect ratio of height-to-crack-length of the specimen. The inclined equidistant cracks are modeled as a continuous distribution of dislocations, and the problem is thus reduced into simultaneous Cauchy's type singu...
16 CitationsSource
#1Tiantang Yu (Hohai University)H-Index: 32
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Satoyuki Tanaka (Hiroshima University)H-Index: 22
view all 7 authors...
We investigate new numerical results of thermal buckling for functionally graded plates (FGPs) with internal defects (e.g., crack or cutout) using an effective numerical method. The new formulation employs the first-order shear deformation plate theory associated with extended isogeometric analysis (XIGA) and level sets. The material properties of FGPs are assumed to vary continuously through the plate thickness obeying a power function. The internal defects are represented by the level sets, wh...
118 CitationsSource
#1Shuohui Yin (Hohai University)H-Index: 18
#2Tiantang Yu (Hohai University)H-Index: 32
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 5 authors...
Abstract Numerical modeling with treatment of trimmed objects such as internal cutouts in terms of NURBS-based isogeometric analysis presents several challenges, primarily due to the tensor product of the NURBS basis functions. In this paper we develop a new simple and effective isogeometric analysis for modeling buckling and free vibration problems of thin laminated composite plates with cutouts. We adopt the classical plate theory for the present formulation. The new approach can nicely overco...
51 CitationsSource
#1Tiantang Yu (Hohai University)H-Index: 32
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 5 authors...
Interfacial dynamic impermeable cracks analysis of dissimilar piezoelectric solids under coupled electromechanical impact loadings by the extended finite element method (X-FEM) is presented. The dynamic X-FEM approach recently developed by the authors is further extended to analyze transient responses of interfacial impermeable cracks in dissimilar piezoelectric structures. The mechanical displacements and electrical potential are approximated by appropriate enrichment functions that are not onl...
58 CitationsSource
#1Peng Liu (Hunan University)H-Index: 12
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
view all 7 authors...
Abstract We present new numerical results in buckling failure analysis of cracked composite functionally graded plates subjected to uniaxial and biaxial compression loads. An accurate extended 3-node triangular plate element in the context of the extended finite element method (XFEM) is developed, integrating the discrete shear gap method (DSG) to eliminate shear-locking. The plate kinematics is based on the Reissner–Mindlin theory, and material properties are assumed to vary through thickness d...
64 CitationsSource
#1Luyang Shi (Hohai University)H-Index: 1
#2Tiantang Yu (Hohai University)H-Index: 32
Last. Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
view all 3 authors...
A numerical model based on the extended finite element method (XFEM) is developed to serve this purpose. The present approach involves several features of an effective numerical tool in modelling hydraulic fracturing: the generalized shape functions are used in a cluster of nodes around the cracks, whereas the conventional finite element shape functionsare applied outside the cracks; the ramp function is introduced to remove the blending elements in the XFEM setting; and the contact conditions b...
24 CitationsSource