Search Results:　 1-20 of 335

1

Applications of Normal Coordinates of Internal Vibrations to Generate Perturbed Structures : Dynamic Behavior of Weak to Strong Interactions Elucidated by Atoms-in-Molecules Dual Functional Analysis

Nakanishi Waro , Hayashi Satoko , Matsuiwa Kohei 他

Bulletin of the Chemical Society of Japan 85(12), 1293-1305, 2012-12-00
2

Rattling Good Superconductor: \beta-Pyrochlore Oxides AOs2O6

Hiroi Zenji , Yamaura Jun-ichi , Hattori Kazumasa

… After the chemical trends of the normal and superconducting states are summarized, the role of rattling, which is a local, essentially anharmonic oscillation with a large atomic excursion, is discussed. … We conclude that rattling vibrations markedly affect the structural and electronic properties of \beta-pyrochlore oxides and even induce or enhance superconductivity through strong electron--rattler interactions. …

J Phys Soc Jpn 81(1), 011012-011012-24, 2012-01-15

The Physical Society of Japan
3

Evaluation of Effects of Wave-induced Vibrations on Fatigue Damage of Large Ships [in Japanese]

IIJIMA Kazuhiro

… Low frequency response to normal wave loads and high frequency response due to wave-induced vibrations coexist in the ship's structural loads. … This paper addresses the effect of the wave-induced vibrations on long-term fatigue damage in various types of ships. … A series of sensitivity analysis is also performed to clarify the characteristics of the fatigue damage by the wave-induced vibrations in oblique seas as well as in head seas. …

Journal of the Japan Society of Naval Architects and Ocean Engineers (14), 27-37, 2011-12-01

J-STAGE CrossRef References (11)
4

Simulations of Classical Vibrations and Waves in terms of the Java Applets [in Japanese]

Mitsuko Kikuchi , Toshiaki Izumoto

理系基礎としての古典力学の中から連続体の振動と波動をとりあげ,基準振動,固有振動モードとともに差分による数値解法にも焦点をあてた教材としてJava Appletsを開発した.具体的に,3質点とばねからなる連成振動の数値解法やノーマルモードとともに1次元の弦の振動・波動のFourier級数展開法や数値計算法を取り上げた.そこで,Fourier展開の有限項近似による誤差や数値積分の不安定条件なども取り …

IPSJ SIG Notes 2011-CE-109(12), 1-10, 2011-03-11

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5

High efficiency laser photothermal excitation of microcantilever vibrations in air and liquids

Kiracofe Daniel , Kobayashi Kei , Labuda Aleksander , Raman Arvind , Yamada Hirofumi

… Results are shown for both air and water, and for normal bending and torsional oscillations. …

REVIEW OF SCIENTIFIC INSTRUMENTS 82(1), 2011-01-00

IR CrossRef
6

Formulation of Vibrations of Rolling-Element Bearing under Thrust Load and the Application to Failure Diagnosis at Low Rotating Speed

YASUFUKU Daisuke , FUJII Akira , YAMAMOTO Yutaka

… In order to apply failure diagnosis of a rotating machine, normal and abnormal vibrations of a rotating-element bearing were formulated by Herzian contact theory and the results of numerical simulation were applied to decide the existence of a defect. … And then, in order to consider abnormal vibrations by bearing defects, defects were classified to the three types of impulse train and these impulse trains were added to the motion equations. …

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77(779), 2627-2641, 2011

J-STAGE CrossRef
7

Active Vibration Control of AC Motors Using Linear Time Periodic Models

HYVÄMÄKI Tapani , ZENGER Kai

… All rotating machines, such as electrical AC machines, suffer greatly from vibrations in their rotating parts. … Vibrations occur at certain frequencies called critical frequencies that are always characteristic to the machine. … Driving a machine at or near the critical frequencies cause two kinds of problems due to the vibrations. …

Journal of System Design and Dynamics 5(5), 696-705, 2011

J-STAGE CrossRef
8

Formulations of Vibrations of Rolling-Element Bearing under Radial Load and the Application to Failure Diagnosis at Low Rotating Speed(Mechanical Systems) [in Japanese]

YASUFUKU Daisuke , FUJII Akira , YAMAMOTO Yutaka

… In order to apply failure diagnosis of a rotating machine, normal and abnormal vibrations of a rolling-element bearing were formulated by using Hertzian contact theory. … By using these formulations, some numerical examples were conducted to clarify characteristics of bearing vibrations. …

Transactions of the Japan Society of Mechanical Engineers. C 76(771), 2947-2954, 2010-11-25

CiNii Fulltext PDF - Open Access References (7)
9

Observation and Analysis of Molecular Vibration Modes in Polylactide at Terahertz Frequencies

Fuse Norikazu , Sato Ryo , Mizuno Maya , Fukunaga Kaori , Itoh Koichi , Ohki Yoshimichi

… An absorption peak with a similar directional dependence appears at approximately 40 cm-1 in the simulation, which is due to normal-mode molecular vibrations parallel to the molecular helix. … Since the 50 cm-1 absorption decreases with an increase in crystallinity and the permittivity shows a step-like decrease, the molecular vibrations responsible for the 50 cm-1 band seem to be subjected to strong damping in amorphous regions. …

Jpn J Appl Phys 49(10), 102402-102402-8, 2010-10-25

The Japan Society of Applied Physics
10

Lattice Vibrations in Finite Systems with Boundary Conditions Given with the Extrapolation Length: II. Discrete Model with Symmetric Boundary Condition

Iwata Makoto , Ishibashi Yoshihiro

… Lattice vibrations in finite discrete systems with the symmetric boundary condition are studied using the Tilley–Zeks model with emphasis on the effect of the discreteness of the lattice. … It is found that the normal modes, the soft-mode frequency and the transition temperature all depend strongly on the lattice constant $a$, which expresses the degree of discreteness. …

J Phys Soc Jpn 79(7), 074709-074709-7, 2010-07-15

The Physical Society of Japan
11

Lattice vibrations in finite systems with boundary conditions given with the extrapolation length (2) Discrete model with symmetric boundary condition

Iwata Makoto , Ishibashi Yoshihiro

Journal of the Physical Society of Japan 79(7), 074709-1〜7, 2010-07-00
12

Relationship between Helmholtz-resonance absorption and panel-type absorption in finite flexible microperforated-panel absorbers

Toyoda Masahiro , Mu Rui Lin , Takahashi Daiji

… Herein, from the viewpoint of an absorption-characteristics transition with the perforation ratio, the relationship between Helmholtz-resonance absorption and panel-type absorption including the effects of eigen-mode vibrations of the panel is theoretically and experimentally investigated. … The analytical model considers a finite flexible MPP supported in a circular duct, and the predicted data for the absorption coefficient under normal incidence is validated by an experiment using an acoustic tube. …

Appl. Acoust. 71(4), 315-320, 2010-04-00

IR CrossRef Cited by (2)
13

Quadratic scaling functions for obtaining normal vibrational wavenumbers from the B3LYP calculation

Osaki Tomoe , Soejima Eiko

Research bulletin of Fukuoka Institute of Technology 42(2), 129-134, 2010-00-00
14

2A1-A20 Development of Biomimetic Actuator for Dancing and Jumping Robot : Development of the tendon structure for robots using silicone rubber [in Japanese]

NUMAJIRI Hiroshi , ITOH Akitoshi

… In this study, instead of the formerly developed actuators using normal torsion coil type spring, a silicone rubber compression type tendon structure was proposed. … After the simple jumping experiment, it was found that the actuator could jump to the 115mm height softly and without needless vibrations. …

ロボティクス・メカトロニクス講演会講演概要集 2010, "2A1-A20(1)"-"2A1-A20(4)", 2010-00-00

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15

Vibration of the Vocal Folds Observed Using a High-speed Movie System with Consumer Digital Video Camera [in Japanese]

KANEKO Ken-ichi , SAKAGUCHI Koichi , INOUE Masato , TANAKA Fujinobu , TAKANO Atsushi , JINNOUCHI Shinya , NISHI Hideaki , TAKAHASHI Haruo

… On slow playback of the movies and kymographic images constructed from the movie files, the vocal fold vibrations of healthy subjects showed regularity, symmetry, complete glottal closure, normal amplitude and normal mucosal waves. …

Practica Oto-Rhino-Laryngologica 102(5), 379-384, 2009-05-01

J-STAGE Ichushi Web CrossRef References (7)
16

Two-joint robot finger design based on multi-degree-of-freedom ultrasonic motors(<Special issue>Commemoration of the Japan-China Joint Conference on Acoustics 2007 (JCA2007))

Zhang Xiaofeng , Nakamura Kentaro , Ueha Sadayuki

… The sandwich vibrator is composed of two PZT rings and four-divided bronze electrodes, and is driven by phased voltages to excite the bending vibrations in two orthogonal directions. … The synthesis of an elliptical motion with the longitudinal and bending vibrations can make a ball rotor rotate in three directions. …

Acoustical science and technology 30(1), 42-47, 2009-01-00

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17

Torsional Vibrations during Misfiring of Six-cylinder Diesel Engine Fitted with Five-bladed Propeller [in Japanese]

SAITOU Toshimasa , TSUJI Takashi , OHNO Tomohito

… In such a case, the amplitude of torsional vibrations due to the sixth torsional harmonic reduces compared with that in case of a normal operation. … therefore, the amplitude of the torsional vibrations corresponding to these components also increases. …

Journal of The Japan Institute of Marine Engineering 43(6), 958-963, 2008-11-01

J-STAGE CrossRef References (3)
18

Lattice Vibrations in Finite Systems with Boundary Conditions Given as the Extrapolation Lengths : I. Continuum Model(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

ISHIBASHI Yoshihiro , IWATA Makoto

… Lattice vibrations in finite systems with the boundary conditions given as the extrapolation lengths are studied on the basis of the continuum model. … Orthogonality between the normal modes can be proved using the boundary conditions in spite of the fact that the wavenumbers K_i of the normal modes are mutually incommensurate. …

Journal of the Physical Society of Japan 77(10), "104707-1"-"104707-9", 2008-10-15

CiNii Fulltext PDF - Paid The Physical Society of Japan References (27)
19

Heat Conduction in a One-Dimensional Harmonic Chain with Three-Dimensional Vibrations(General)

LIU Zonghua , LI Baowen

… We study vibrational energy transport in a quasi one-dimensional (ID) harmonic chain with both longitudinal and transverse vibrations. …

Journal of the Physical Society of Japan 77(7), "074003-1"-"074003-4", 2008-07-15

CiNii Fulltext PDF - Paid The Physical Society of Japan References (24)
20

Presentation of material sensation using vibration for haptic interaction environments. [in Japanese]

Ikeda Yuto , Hasegawa Syoichi

… In this paper we create a haptic interaction environment which displays material sensations using vibrations. … In our system, vibrations and normal forces are calculated separately and displayed together. …

ITE Technical Report 32(22), 51-56, 2008-06-02

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Search Results:　 1-20 of 335

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Search Results:　 1-20 of 335