Sohichi Hirose
Tokyo Institute of Technology
Time domainOpticsPhysicsEngineeringMathematical analysisUltrasonic testingConvolutionNonlinear systemComposite materialInverse scattering problemBoundary value problemScatteringMaterials scienceCollocation methodAcousticsTemporal discretizationMathematicsNyström methodMultipole expansionBoundary element methodStructural engineeringDiscretizationUltrasonic sensorAnisotropy
71Publications
15H-index
857Citations
Publications 67
Newest
#2Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
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#1Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
#2Du Dinh NguyenH-Index: 4
Last. Romesh C. Batra (VT: Virginia Tech)H-Index: 81
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Abstract The recently developed consecutive-interpolation procedure (CIP) based 4-node quadrilateral element (CQ4) is used to study free and forced 2-dimensional vibrations of elastic and piezoelectric structures of complex geometries. For some of these problems results have also been computed with the standard quadrilateral element under the constraint that the two approaches have the same number of degrees of freedom. In each case it is found that the numerical solution using the CQ4 element h...
35 CitationsSource
#1Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
#2Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
Last. Jun Lei (Beijing University of Technology)H-Index: 11
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Abstract A dynamic extended isogeometric analysis (XIGA) is developed for transient fracture of cracked magnetoelectroelastic (MEE) solids under coupled electro-magneto-mechanical loading, taking the advantages of high order NURBS basis functions and enrichment methods. The extended dynamic fracture parameters are estimated through the electro-magneto-mechanical interaction integral. Numerical examples of electrically and magnetically impermeable cracks are studied to demonstrate the accuracy of...
94 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
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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...
131 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
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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
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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...
17 CitationsSource
#1Kahori IiyamaH-Index: 2
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#1Akira FurukawaH-Index: 3
#2Takahiro SaitohH-Index: 7
Last. Sohichi HiroseH-Index: 15
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Wave analysis in rocks is widely used in earthquake engineering and geophysical exploration. Rocks under the ground include pores and cracks which are saturated with pore fluid. Waves which propagate in the rocks are affected by these cracks and pore fluid. Therefore, in the numerical simulation of the rocks, it is necessary to consider the effects of both anisotropy and pore fluid. Biot has been proposed as a mechanical model for describing the behavior of such a rock, and this model forms a fo...
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#1Zuoyi Kang (TITech: Tokyo Institute of Technology)H-Index: 3
#2Tinh Quoc Bui (TITech: Tokyo Institute of Technology)H-Index: 54
Last. Sohichi Hirose (TITech: Tokyo Institute of Technology)H-Index: 15
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A novel extended 4-node quadrilateral finite element (XCQ4) based on a consecutive-interpolation procedure (CIP) with continuous nodal stress for accurately modeling singular stress fields near crack tips of two-dimensional (2D) cracks in solids is presented. In contrast to the traditional approaches, the approximation functions constructed based on the CIP involve both nodal values and averaged nodal gradients as interpolation conditions. Our objective is to exhibit a pioneering extension of th...
64 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
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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...
56 CitationsSource