Search Results 1-20 of 108

  • STRUCTURAL ANALYSIS BASED ON APPLICATION OF PROPERTY OF THE GENERALIZED INVERSE MATRIX:Such a case that the condition for compatibility of strain is required in stress method  [in Japanese]

    TANAMI Tetsu-yuki

    … of strain or not might be brought up from the fact that the stress can derive from a formulation based on stress method by means of application of the property of the Moore-Penrose generalized inverse without the help of the compatibility condition.</p><p> One answer to the question might be found in an analysis of the situation where the reciprocal theorem is not satisfied because of the reason that the transposed relation between the stress-force matrix and the displacement-strain

    Journal of Structural and Construction Engineering (Transactions of AIJ) (777), 1449-1455, 2020-11

    J-STAGE  AIJ 

  • Elastic strain energy and pore-fluid pressure control of aftershocks

    Terakawa Toshiko , Matsu'ura Mitsuhiro , Noda Akemi

    … The energetics-based formulation expands the ΔCFS defined on a specific plane into a generalized failure stress defined in a three-dimensional space. …

    Earth and Planetary Science Letters (535), 116103, 2020-04-01

    IR 

  • STUDY ON STRENGTH AND OUT-OF-PLANE BUCKLING OF STEEL HEXAGONALLY LATTICED PLATES SUBJECTED TO CYCLIC SHEAR DEFORMATION  [in Japanese]

    YAMASHITA Tetsuo , OYOBE Hiroyuki , MIYAZAWA Ryosuke

    …  Some new multi-story buildings constructed in recent years employs single-layer latticed walls as the outer-tube, because of attractive appearance and great in-plane stiffness. … The shear strain (denoted by γ) amplitude in each cycle gradually increased from ±1/900 to ±1/25. … After yield, the plastic response behavior of the H1 and H2 plates was very stable without out-of-plane buckling until the final cycle. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) (753), 1647-1654, 2018-11

    J-STAGE  AIJ 

  • Elastic flattening of box beams under bending moment (The Brazier effect of rectangular tubes)  [in Japanese]

    FURUSU Katsuya , AMAGO Tatsuyuki , NAKAGAWA Toshiaki , HAMABE Tsutomu , AOKI Norihisa

    … Calculation results from this derived formula were compared with FEM results modeling only the cross section using generalized plane strain elements. …

    Transactions of the JSME (in Japanese) 84(858), 17-00326-17-00326, 2018

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  • Validation of flattening of box beam under bending moment using finite element method  [in Japanese]

    FURUSU Katsuya , AMAGO Tatsuyuki , NAKAGAWA Toshiaki , HAMABE Tsutomu , AOKI Norihisa

    … <p>In this report, in order to discuss the propriety of the derived formula on the flattening of a box beam, especially square beam, composed of thin plates, the non-linear structural analysis with generalized plane strain elements was carried out by the finite element method (FEM). …

    The Proceedings of the Materials and Mechanics Conference 2017(0), GS0402, 2017

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  • Analytical Study for Anisotrpoic Elastic Elliptical Cylinder Subjected to Arbitrary Out-of-Plane Shear Loading on Its Lateral Surface  [in Japanese]

    TANE Takeshi , SASAKI Toru , UCHIDA Takeshi

    … <p>This paper presents analytical solution for an anisotropic elastic cylinder subjected to arbitorary out-of-plane shear loadings on its lateral surface. … Anisotropy of the cylinder may be allowed the coupling effct such as out-of-plane shear (in-plane) deformation due to in-plane (out-of-plane) loading, which is confirmed by its constitutive equation. …

    The Proceedings of Mechanical Engineering Congress, Japan 2017(0), G0300103, 2017

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  • ENHANCEMENT OF ACCURACY OF SEMI-ANALYTICAL METHOD FOR SHEAR LAG OF BEAMS WITH ARBITRARY CROSS SECTION  [in Japanese]

    SAIKI Isao , NISHII Daiki , IWAKUMA Tetsuo

    箱断面や複数の桁を有する橋梁において,ウェブ間隔や桁間隔がスパンに比べて広い場合,フランジ上の曲げひずみはせん断遅れにより橋軸直角方向に一様でなくなる.せん断遅れの解析は,せん断遅れによる変位分布の仮定を用いた解析的手法が開発され,変位を級数展開で表した解析的手法に発展している.著者らは,せん断遅れの変位を有限要素法を用いた均質化梁理論で求め,それを従来の解析的手法に組み込んだ簡便な半解析的手法を …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 72(2), I_53-I_62, 2016

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  • REDUCTION OF THE TOTAL DEGREES OF FREEDOM IN FRAME ANALYSIS BY THE FIBERED PLASTIC HINGE MODEL  [in Japanese]

    SHUGYO Minoru , SHIMAZU Masaru

    … following assumptions are made to form the elastoplastic tangent stiffness matrix of the pure steel element: (1)members have thin walled closed or open sections, and cross sections remain plane and do not distort in the absence of cross-sectional warping, (2)deflection is large but elastic strain is small, (3)axial stress and the shear stress due to St. Venant torsion participate in yielding of fibers of members with closed sections, while only axial stress participates for members with open sections, (4)plastic deformation …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 81(726), 1263-1270, 2016

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  • TOPOLOGY OPTIMIZATION OF CROSS-SECTION STRUCTURE FOR THICK COMPOSITE PLATE  [in Japanese]

    NISHI Shinnosuke , TERADA Kenjiro , KATO Junji

    本研究では,面内周期性を有する複合板を対象として,そのマクロの力学的性能を最大化させるようなミクロ構造(面内ユニットセル)の最適材料配置を決定する手法を提案する.最適化問題の設定にあたり,マクロ構造には厚板要素を用い,ミクロ構造には3次元的広がりを持つソリッド要素を想定し,両スケールの境界値問題を解くことでミクロ構造の非均質性を反映した均質化板剛性を算出する.この均質化板剛性を用いて,マクロ厚板構 …

    Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 71(2), I_245-I_254, 2015

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  • OS0122-260 First-principles Analysis of Generalized Stacking Fault Energy of Mg  [in Japanese]

    MATSUNAKA Daisuke , SHIBUTANI Yoji

    … The generalized stacking fault energy (GSFE) curves of the basal and second-pyramidal slips in Magnesium are investigated by first-principles calculations. … For the basal slip, the unstable and I_2-type stacking fault energies are decreased with increasing the normal strain perpendicular to the slip plane. …

    The Proceedings of the Materials and Mechanics Conference 2015(0), _OS0122-26-_OS0122-26, 2015

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  • OS0513 Effect of prestrains on swelling-induced buckling patterns in gel films with holes in a square array  [in Japanese]

    OKUMURA Dai , INAGAKI Takahiro , OHNO Nobutada

    … A periodic unit consisting of 10×10 unit cells is analyzed under a generalized plane strain assumption. …

    The Proceedings of the Materials and Mechanics Conference 2014(0), _OS0513-1_-_OS0513-3_, 2014

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  • OS0910 Influence of imperfections on swelling induced buckling of gel films with holes in a square array  [in Japanese]

    OKUMURA Dai , KUWAYAMA Tsuyoshi , OHNO Nobutada

    … Periodic units consisting of 2×2 unit cells are analyzed under a generalized plane strain assumption. …

    The Proceedings of the Materials and Mechanics Conference 2013(0), _OS0910-1_-_OS0910-3_, 2013

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  • CM-KR-2 Reduction of Free-Edge Peeling Stress in Laminated Composites Using Thermal Gradient

    Heung Soo Kim , Lee Jaehun , Cho Maenghyo

    … of the laminates.At the top and bottom surface,heat convection conditions were considered to determine the temperature field more realistically.To determine the free-edge stress field,efficient stress function-based approach was adopted with generalized plane strain assumption.The results obtained herein are compared to those of a 3D finite element analysis conducted by Nastran.As a result,it can be observed that the free-edge peeling stresses are successfully reduced by applying the global/local …

    The Proceedings of Mechanical Engineering Congress, Japan 2012(0), _CM-KR-2-1-_CM-KR-2-2, 2012

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  • Simplified Estimation of Inelastic Behavior in Local Section of Components Subjected to Membrane, Bending and Peak Stresses Using Stress Redistribution Locus Method

    KOBAYASHI Ken-ichi , HATTORI Yuji

    … Stress redistribution locus (SRL) method has been proposed to estimate stress and strain behaviors at the specific point employing the elastic Finite Element Analysis, an inelastic constitutive equation, and a unique hyperbolic curve: <span style="text-decoration: overline">ε</span>= {1/<span style="text-decoration: overline">σ</span> … show dimensionless equivalent strain and stress that are normalized by the elastic FEA result. …

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 77(777), 726-730, 2011

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  • 505 Transient Hygrothermal Stress Analysis of an Anisotropic Laminated Hollow Cylinder(The Generalized Plane Strain Problem)  [in Japanese]

    HIROTSU Yoshihiko , OOTAO Yoshihiro , ISHIHARA Masayuki

    The Proceedings of Conference of Kansai Branch 2011.86(0), _5-5_, 2011

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  • Ab initio study of magnetism at iron surfaces under epitaxial in-plane strain

    Shimada Takahiro , Ishii Yoshiyuki , Kitamura Takayuki

    … We investigated magnetism at the (001) surface of iron and its response to the epitaxial in-plane strain that corresponds to bcc-fcc (Bain's) transformation path using ab initio (first-principles) spin-density-functional theory calculations within the generalized gradient approximation. … The magnetic moment is enhanced at the surface of a ferromagnetic (FM) film under a strain-free condition. …

    Physical Review B 81(13), 2010-04

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  • An Analysis of Propagation of Spherical Waves in an Elastic-Plastic-Viscoplastic Body  [in Japanese]

    TANIMOTO Noboru

    弾・塑・粘塑性厚肉球の点対称空洞の内面に、点対称動的荷重が負荷される場合の動的挙動の解析がなされる。まず、一般化弧ひずみ速度をパラメータとした、一般化応力・一般化ひずみ平面が示される。2番目に、弾・塑・粘塑性球面波伝ぱ速度の式が導出される。3番目に、その球面波伝ぱ速度がひずみ速度依存性および応力速度依存性であることが理論的に証明される。4番目に、各物理量間の常微分方程式が特性曲線に沿って導出される …

    NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan 59(0), 100-100, 2010

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  • PS16 Determination of Mixed-Mode, Generalized Stress Intensity Factors of Sharp V-Notched Plates Based on Mindlin Plate Theory by Using Strain Gages  [in Japanese]

    KURIBAYASHI Koji , INANIWA Shota , KONDO Toshimi , SASAKI Toru , SUGISAWA Motojiro , MIYASHITA Yukio

    Strain gage method for determining generalized stress intensity factors of V-notched plates under mixed-mode conditions is developed. … The plate with V-shaped edge notches is subjected to out-of-plane bending. … A theory of determining the generalized stress intensity factors using strain gages is presented on the basis of Mindlin plate theory. …

    The Proceedings of the Materials and Mechanics Conference 2010(0), 41-43, 2010

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  • S0303-1-1 Bending analysis of functional material plates by a generalized shear deformation theory  [in Japanese]

    HIGUCHI Masahiro , ADACHI Tadaharu , NAGINO Harunobu , Yoshigaki Nobuhiko

    … We proposed a generalized shear deformation theory to accurately analyze the bending behavior of functional material plates with a simple mathematical procedure. … The generalized shear deformation theory was developed using in-plane displacements expressed in terms of the transverse shear strains derived from the stress equilibrium equations of the in-plane directions. …

    The proceedings of the JSME annual meeting 2010.1(0), 85-86, 2010

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  • Evolution of Plastic Zone around Inclined Wellbores Using Finite Element Simulation with Generalized Plane Strain Model

    LIAO Shu-Tao , TSAI Cheng-Lin

    傾斜した坑壁を取り囲む岩石の弾塑性応答を解析する特殊な有限要素法による手法を提案する。特殊な三次元問題を二次元有限要素法で解く手法である。このモデルの唯一の仮定条件は,解析する領域に対して,岩石特性および遠く離れた地点の応力は坑井軸に沿って顕著に変化しない,というものである。この手法によって,三次元領域で傾斜井の解析をするとき,一般性を失うことなく,計算時間を大幅に減らすことができた。次に,完全塑 …

    Journal of the Japan Petroleum Institute 52(5), 231-238, 2009-09-01

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