Satoyuki Tanaka
Hiroshima University
Mathematical analysisFinite element methodPeridynamicsComposite materialBoundary value problemGalerkin methodMaterials scienceWeldingExtended finite element methodSurface (mathematics)Shell (structure)Applied mathematicsMathematicsFracture (geology)WaveletNumerical analysisStress intensity factorMechanicsFracture mechanicsBasis functionStructural engineeringDiscretizationBucklingStress (mechanics)
130Publications
22H-index
1,490Citations
Publications 130
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#1Hanlin Wang (Hiroshima University)H-Index: 5
#2Satoyuki Tanaka (Hiroshima University)H-Index: 22
Last. Erkan Oterkus (University of Strathclyde)H-Index: 26
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In this article, several thermoelastic benchmark cases are studied within the framework of ordinary state based peridynamic theory (OSPD). By using OSPD, the limitations of geometrical discontinuity in fracture analysis can be overcome. Meanwhile, double nodes can also be avoided during crack definition. A domain integral method with thermal effect is applied in calculating the thermal stress intensity factors (TSIFs). Meanwhile, peridynamic differential operators are utilized to rewrite the spa...
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#1Ming-Jyun Dai (Hiroshima University)H-Index: 1
#2Satoyuki Tanaka (Hiroshima University)H-Index: 22
Last. Erkan Oterkus (University of Strathclyde)H-Index: 26
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Abstract A recently developed peridynamic (PD) shell model based on the ordinary state-based peridynamic theory is adopted to evaluate stress intensity factors (SIFs) under in-plane loading. Strain and stress components are obtained by introducing the peridynamic differential operator. In order to evaluate mixed-mode SIFs, the domain form of the interaction integral is employed. The adaptive dynamic relaxation technique is utilized to obtain steady-state solutions, and the energy method is appli...
1 CitationsSource
#1Ming-Jyun Dai (Hiroshima University)H-Index: 1
#2Satoyuki Tanaka (Hiroshima University)H-Index: 22
Last. Erkan Oterkus (University of Strathclyde)H-Index: 26
view all 5 authors...
Abstract The present paper is devoted to numerical investigation on fracture parameters of cracked shells subjected to out-of-plane loading using ordinary state-based peridynamics (PD). The nonlocal deformation gradient and equivalent domain integral are introduced to evaluate fracture parameters. To reduce the surface effect and obtain more accurate results, the energy method and volume correction algorithm are considered. Meanwhile, the adaptive dynamic relaxation technique is employed to obta...
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#1Michiya Imachi (Hiroshima University)H-Index: 6
#2Takaaki TakeiH-Index: 2
Last. Erkan OterkusH-Index: 26
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Peridynamics has attractive features for solving several fracture mechanics problems. On the other hand, to ensure the accuracy, a great deal of particles (material points) is required. Introduction of variable horizon is an alternative approach by changing the horizon size over the problem domain. In the present study, we propose a novel variable horizon concept. It is known that undesired “ghost” force arises along the transition region of different horizons. In order to suppress the ghost for...
1 CitationsSource
#1Kengo MaedaH-Index: 1
#2Satoyuki TanakaH-Index: 22
Last. Naoki OsawaH-Index: 8
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#1Michiya Imachi (Hiroshima University)H-Index: 6
#2Satoyuki Tanaka (Hiroshima University)H-Index: 22
Last. Erkan Oterkus (University of Strathclyde)H-Index: 26
view all 6 authors...
Abstract A two-dimensional ordinary state-based peridynamic formulation is utilized for evaluating dynamic fracture parameters. At first, mixed-mode dynamic stress intensity factors are extracted by interaction integrals for stationary cracks under dynamic loading. The spatial derivatives of physical quantities are evaluated by moving least squares approximation in cooperation with diffraction method to take into account the discontinuities. The same peridynamic formulation is then extended for ...
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#1Septia Hardy Sujiatanti (Hiroshima University)H-Index: 1
#2Satoyuki Tanaka (Hiroshima University)H-Index: 22
Last. Daisuke Yanagihara (Kyushu University)H-Index: 6
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Abstract The buckling and collapse behaviors of a cracked thin steel panel subjected to sequential tensile and compressive loading were investigated. An experimental apparatus was developed. Three different test specimens were employed, i.e., an intact panel and cracked panels with different crack lengths. The load-displacement curve and crack opening displacement (COD) were measured during the loading. The experimental results were examined via finite element (FE) computation. The results revea...
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#1Tetsuya Yao (Osaka University)H-Index: 13
Last. Septia Hardy Sujiatanti (Hiroshima University)H-Index: 1
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#1Norio Yamamoto (Nippon Kaiji Kyokai)H-Index: 8
#2Tomohiro Sugimoto (Nippon Kaiji Kyokai)
Last. Satoyuki Tanaka (Hiroshima University)H-Index: 22
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Stress distributions in the vicinity of type-b hot spot in the in-plane gusset welded joints and in the free edge of the stiffened cruciform welded joints were evaluated according to the solid model, the fine mesh shell model, and the coarse mesh shell model. The hot spot stress (HSS) of each FE model was evaluated by extrapolating the stresses at the read out point (ROP) to the hot spot position according to the recommendations of IIW and were compared. Regarding the in-plane gusset welded join...
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