Search Results 1-20 of 348

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Mechanical effects of residual bone mass, a maxillofacial prosthesis, and a reconstruction plate on the mandible after marginal resection

Kase Takeshi , Ohyama Tetsuo , Nakabayashi Shinya , Yasuda Hiroyasu , Yoneyama Takayuki

… In this study, analytic models were used to simulate marginal resection in the area of the second premolar to the second molar region, and the mechanical effects on the mandible of residual bone mass, a maxillofacial prosthesis, and a reconstruction plate were evaluated by three-dimensional finite element analysis. …

Journal of Oral Science 62(4), 377-381, 2020

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2

Optimization of Strength and Dimensional Characteristics of Electron Beam Welds by "Parameter Design" [in Japanese]

Toma Eiji , Tanaka Hiroshi , Suda Takanori

… On the other hand, regarding Electron Beam Welding (EBW) strength, there have been several reports to date on residual stress and deformation behavior of thick plates. … In addition, welding for stabilization of welding strength and dimensional characteristics related to "High Quality (Q)" and "Cost Reduction (C)" and "High Productivity (D)" (QCD), which are the three elements of the productivity index. …

The Japanese Journal of the Institute of Industrial Applications Engineers 8(2), 203-213, 2020

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3

Computational Modeling and Experimental Validations of the HeatTransfer and Residual Stresses in the Aluminum 6061-T6 PlateWelded by an Adjustable Ring Mode (ARM) Laser

Kong Fanrong , Lavoie Jean-Philippe , Kleine Klaus , Kovacevic Radovan

… A three-dimensional (3-D) thermo-mechanical Finite Element Model (FEM) was developed based on ANSYSParametric Design Language (APDL) to study the temperature field and residual stresses in the Aluminum Alloy6061 plate in the formation of bead-on-plate welded by an Adjustable Ring Mode (ARM) Laser. …

Journal of Light Metal Welding 58(8), 19-25, 2020

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4

Discrete element analysis of direct shear test on bonded sand

Jiang Mingjing , Chen Yiru , Lu Guowen

… This paper presents a three-dimensional (3D) numerical simulation of bonded sand in direct shear tests using the distinct element method (DEM), by employing a 3D contact model for bonded sand considering the size of bond. … The results show that the bonded sand demonstrates higher peak and residual stress as well as dilatant behavior due to cementation, and intensive bond breakage and high local void ratio are found inside the shear band. …

Japanese Geotechnical Society Special Publication 8(12), 489-492, 2020

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5

Effects of Weld Pass Sequence on Residual Stress And Distortion in A Pipe Set-in Joint [in Japanese]

YANAGIDA Nobuyoshi , SAITO Koichi

… Weld residual stress profiles and weld distortion of a pipe set-in joint were discussed based on three dimensional finite element analysis. … In this study, three dimensional analyses were conducted to simulate non-axisymmetric weld residual stress profiles and weld distortion. …

The Proceedings of the Materials and Mechanics Conference 2019(0), OS1301, 2019

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6

Numerical Simulation of Laser Welding Different Kinds of Materials using a thermohydraulics Computational Science Numerical Simulation Code SPLICE [in Japanese]

MURAMATSU Toshiharu , SATO Yuji , KAMEI Naomitsu , AOYAGI Yuji , SHOBU Takahisa

… A general-purpose three-dimensional thermohydraulics computational science numerical simulation code SPLICE was applied to laser welding processes for different kinds of materials to understand the phenomenological welding and solidifying mechanisms of both the materials. …

The Proceedings of The Manufacturing & Machine Tool Conference 2019.13(0), B16, 2019

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7

The Output Voltage Analysis of Pt-Core PZT Fiber/Al Matrix Composite Materials with Finite Element Simulation [in Japanese]

WANG Yinli , YANG Zhenjun , WANG Zhenjin , YANASEKO Tetsuro , SATO Hiroshi , ASANUMA Hiroshi , NARITA Fumio

… Three-dimensional finite element simulations of the composite materials were conducted, and the residual thermal stresses were predicted after the temperature was set from melting point of Al to room temperature. …

The Proceedings of Mechanical Engineering Congress, Japan 2019(0), S03134P, 2019

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8

Residual stress verified by the distortion of additive manufacturing 3D part in multi-scale modelling approach

Lo Yu-Lung , Tran Hong-Chuong , Lin Hung-Yu , Chang You-Cheng

… Selective Laser Melting (SLM) is an additive manufacturing technique in which three-dimensional (3D) parts are produced by selectively melting defined areas of a metal powder layer using a controlled laser beam. … In SLM process, the high cooling rate (103 -106 K/s) and high thermal gradient around the laser irradiated zones cause large tensile residual stress [1]. …

The Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2019(0), 1009C1045, 2019

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9

Side Milling of Helical End Mill Oscillated in Axial Direction with Ultrasonic Vibration

Iwabe Hiroyasu , Hiwatashi Mitunori , Jin Masahiko , Kanai Hidenari

… First, the cross-sectional chip area is calculated using three-dimensional computer aided design (CAD) with its mean value relative to the cutting time. … Next, the flank wear, surface roughness, cutting force, and residual stress are measured. …

International Journal of Automation Technology 13(1), 22-31, 2019

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10

CYCLIC LOADING TEST OF RC MULTI-STORY SHEAR-WALL－DAMPER CONNECTION:Development of vibration controlled high-rise RC building with low stiffness at lower stories using shear-wall and oil-dampers Part 2 [in Japanese]

TANI Tsubasa , MASEKI Ryota , TAKEWAKI Izuru

… The objective of this study is to clarify the mechanical property of the connection between a couple of shear-walls and dampers and to construct a simplified analysis model for design. First, cyclic loading experiments using three types of T-shape specimens (normal, cracked and reinforced) were conducted for evaluating their stiffness and durability. … However, it keeps high stiffness compared with that of dampers and the residual crack width is small. …

Journal of Structural and Construction Engineering (Transactions of AIJ) (747), 677-685, 2018-05

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11

Development of an Inverse Problem Analysis Method for Three Dimensional Residual Stress Estimation of Thick Welded Plate [in Japanese]

前久保格也 , Maekubo Kakuya , 中村春夫 , NAKAMURA HARUO

関東学生会第57回学生員卒業研究発表講演会論文集, 1-5, 2018-03

IR
12

Application of X-ray stress measurement for residual stress analysis by inherent strain method - Comparison of cosα and sin2Ψ method-

MATSUDA Mariko , OKITA Keisuke , NAKAGAWA Tomokazu , SASAKI Toshihiko

… The method for measuring the residual stresses caused by such surface treatment is very important when evaluating the fatigue strength of engineering components. … The inherent strain method is one of the most effective measures for predicting the internal residual stress distribution. … The residual stresses within a body are caused by internal permanent strains known as inherent strain or eigenstrain. …

Mechanical Engineering Journal 4(5), 17-00022-17-00022, 2017

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13

Proposal of an estimation method of three-dimensional residual stresses for welded pipes by using X-ray diffraction [in Japanese]

WATANABE Daiki , OGAWA Masaru

… Today, it is difficult to estimate three-dimensional welding residual stresses for the whole structure on site. … Three-dimensional residual stresses can be measured using the neutron diffraction, but the higher energy diffraction method is available only in special irradiation facilities. …

The Proceedings of the Materials and Mechanics Conference 2017(0), OS0605, 2017

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14

Weld Residual Stress Analysis of Low Alloy Steel Multi Pass Bead on Plate Specimen by Considering Phase Transformation Strain Characteristics and Using Shell Element [in Japanese]

YANAGIDA Nobuyoshi , SAITO Koichi

… Three dimensional shell elements were used to simulate welding residual stress profiles of multi pass bead on plate specimen. … Residual stress profiles were measured with the strain relief method. … Welding residual stress profiles were calculated by using the thermal elastic plastic analysis. …

The Proceedings of Ibaraki District Conference 2017.25(0), 905, 2017

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15

Numerical Simulation of Relationship Between Member Dimension and Weld-induced Stress in Plate-fin Type Heat Exchanger [in Japanese]

Yamagishi Shunta , Mikami Yoshiki , Otani Kenji , Hisada Norihiro , Aoki Shigeru , Mochizuki Masahito

… The weld induced deformation and residual stress will affect the structural integrity of the heat exchanger, however, the effect of the welding of header tanks has not been well investigated. … The information on the relationship between member dimension and weld induced stress will support the design and fabrication process. … In this study, a quasi-three-dimensional simulation model of welding of header tanks on core structure was developed. …

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 35(2), 71s-74s, 2017

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16

Probabilistic prediction of crack propagation using the three-dimensional residual stresses estimation method based on the eigenstrain methodology for welded pipes [in Japanese]

OGAWA Masaru

… Today, crack growth rate for each observed crack cannot be evaluated accurately without neutron diffraction and synchrotron X-ray diffraction due to the difficulty of nondestructive measurements of welding residual stresses in the thickness direction. …

Transactions of the JSME (in Japanese) 83(852), 16-00066-16-00066, 2017

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17

Application of X-ray stress measurement for residual stress analysis by inherent strain method - Comparison of cosα and sin2Ψ method-

Matsuda Mariko , Okita Keisuke , Nakagawa Tomokazu , Sasaki Toshihiko , Sasaki Toshihiko

… The method for measuring the residual stresses caused by such surface treatment is very important when evaluating the fatigue strength of engineering components. … The inherent strain method is one of the most effective measures for predicting the internal residual stress distribution. … The residual stresses within a body are caused by internal permanent strains known as inherent strain or eigenstrain. …

The Japan Society of Mechanical Engineers, Mechanical Engineering Journal 4(5), 17-00022, 2017

IR DOI
18

Numerical analysis of dislocation density and residual strain in multicrystalline silicon for solar cells using experimental verification

Nakano Satoshi , Gao Bing , Jiptner Karolin , Harada Hirofumi , Miyamura Yoshiji , Sekiguchi Takashi , Fukuzawa Masayuki , Kakimoto Koichi

… A three-dimensional (3D) Haasen-Alexander-Sumino model (HAS model) has been developed to study the dislocation density and residual strain in the crystal. … The results show that the HAS model can evaluate the dislocation density and residual strain in the crystal semiquantitatively. … And the residual strain for a multicrystal is lower than that for a mono-like crystal. …

九州大学応用力学研究所所報 (150), 1-5, 2016-03

IR DOI
19

Three-dimensional Metamaterials and Their Fabrication Techniques [in Japanese]

TANAKA Takuo

… Stereoscopic structure is essential to realize three-dimensional functional metamaterials. … Severalfabrication techniques for such a stereoscopic metamaterial structure are reviewed, and as a novel andpromising technique for the large area 3D metamaterials, metal-stress driven self-folding method, whichuses electron beam lithography and self-organized formation of resonator rings using residual stress ofmetal thin films, is introduced. …

The Review of Laser Engineering 44(1), 15, 2016

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20

Three-dimensional isotropic metamaterials and their fabrication technique [in Japanese]

TANAKA Takuo

等方的な光学特性をもつメタマテリアルを実現するには，立体的な構造をもつ3次元メタマテリアルを作ることが必須である．このような3次元メタマテリアルを大面積に高速に加工する手法として，我々は電子線リソグラフィ法と金属薄膜の残留応力を利用した自己組織化法を組み合わせた加工技術を開発した．そして，試作したメタマテリアルが，30THzの周波数において0.35という実効屈折率を等方的に示すこ …

Oyo Buturi 85(1), 38-42, 2016

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