担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3390/app112412070

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3397/1/376403

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japan Society of Mechanical Engineers  

The nonlinear liquid motion in a partially filled rectangular tank with a core barrel is investigated. Basic equations are derived by employing the variational principle. Unlike in case of a rectangular tank without a core barrel, it is difficult to obtain analytically the modes of vibration and the natural frequencies of the liquid motion in a rectangular tank with a core barrel. Therefore, the modes of vibration and the natural frequencies are obtained by using the finite elements method. It was shown by the previous research on the nonlinear liquid motion in a rectangular tank that the internal resonance may occur at the water depth where the natural frequency of the second mode accords with twice the natural frequency of the first mode. In case of a rectangular tank with a core barrel, the water depth satisfying this condition was found by the relations between water depth and the natural frequency. An experiment was carried out at this water depth using the model tank. The occurrence of the internal resonance was confirmed by the experimental results. The effects of radius and location of a core barrel on the condition of the internal resonance was discussed. It is shown that the water depth where the internal resonance occurs becomes higher as the radius of a core barrel becomes larger or that location becomes closer to the center of the tank.

DOI： 10.1299/transjsme.14-00552

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japan Society of Mechanical Engineers  

The present study investigates the effect of multiple dynamic absorbers on both forced chatter and regenerative chatter. The stability lobe of regenerative chatter is widely employed to find the axial depth of cut and the spindle speed in which regenerative chatter doesn't occur. However, the cutting force variation by the intermittent cutting with an end milling tool causes the forced chatter. The excitation frequency is determined by the spindle rotation frequency and the number of teeth. When the integral multiple of the excitation frequency approaches to the natural frequency of the tool and spindle system, resonance can be caused by the forced chatter. It is known that the resonance occurs in the spindle speed resistant to regenerative chatter. Therefore, it is important to take a countermeasure against not just the regenerative chatter but also the resonance caused by the forced chatter. In the present study, the cutting conditions which can lead to the regenerative chatter and the resonance are investigated by the direct numerical integration method. It is shown that an improvement in the regenerative chatter-free axial depth of cut can be obtained using the absorbers. Furthermore it is made clear that the absorbers have a significant suppression effect on not only the regenerative chatter but also the forced chatter.

DOI： 10.1299/transjsme.2014dr0098

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.jsv.2012.10.035

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japan Society of Mechanical Engineers  

It is known that, under appropriate conditions, the amplitude of vibration of some blades in the mistuned bladed disk system become large compared to what would be predicted by an analysis of the perfectly tuned system. In this paper, the rms responses of the mistuned bladed disk system subjected to random excitation with the spatial decorrelation and correlations are investigated. The effect of the correlation of the random excitation on the rms response is discussed. It is shown that the rms response of the mistuned system subjected to the spatially-uncorrelated random excitation is almost the same as that of the tuned system. In the case the random excitation is spatially-correlated, it is noted that the rms responses of the mistuned system is much larger than those of the tuned system and that the mistuning configurations effect on the rms responses. With the spatial correlation, it is also noted that the particular mode shapes play an important role in the rms response.

DOI： 10.1299/jsdd.6.120

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.jsv.2010.08.027

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出版者・発行元：The Japan Society of Mechanical Engineers  

It is known that, under appropriate conditions, the amplitude of vibration of some blades in the mistuned bladed disk system become large compared to what would be predicted by an analysis of the perfectly tuned system. In this paper, the rms responses of the mistuned bladed disk system subjected to random excitation with the spatial decorrelation and correlations are investigated. The effect of the correlation of the random excitation on the rms response is discussed. It is shown that the rms response of the mistuned system subjected to the spatially-uncorrelated random excitation is almost the same as that of the tuned system. In the case the random excitation is spatially-correlated, it is noted that the rms responses of the mistuned system is much larger than those of the tuned system and that the mistune arrangements effect on the rms responses. With the spatial correlation, it is also noted that the particular mode shapes play an important role in the rms response.

DOI： 10.1299/kikaic.77.3365

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：一般社団法人 日本機械学会  

DOI： 10.1299/kikaic.73.2653

DOI： 10.1299/transjsme.15-00334_references_DOI_CbgTku3E8TJli0NGPFuXLCnv7ri

CiNii Research

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：一般社団法人日本機械学会  

An eddy current testing (ECT) probe is used for a diagnosis of a helical heating tube installed in a fast breeder reactor, and a vibration of ECT probe makes the diagnosis difficult. In our previous report, we proposed an analytical model of the ECT probe incorporating with a frictional force and confirmed that the vibration was caused by Coulomb friction. In this paper, it is shown that numerical simulations utilizing the analytical model agree with various experimental results of the vibration of ECT probe, so that the reliability of the analytical model and the numerical simulation is increased. It follows that a preceding estimation of the vibration is available by the numerical simulation. Based on a behavior of the entire probe, which is obtained by the numerical simulation, we discuss a countermeasure to suppress the probe vibration. The validity of countermeasure is demonstrated through the numerical simulations.

CiNii Books

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：一般社団法人日本機械学会  

This paper deals with sensor signal noise of eddy current testing (ECT) probe generated in helical heating tube in the fast breeder reactor MONJU. ECT probe is used for inspection of thickness of heating tube. The heating tube is composed of helical tube and straight tube because of advantage of thermal efficiency and compact size. However, the vibration of probe having no experience in usual straight heating tubes is generated. The vibration causes the noise and the decrease of sensor sensitivity of ECT probe. The experiment was performed by using a mock-up, and the noise characteristics of ECT sensor signal mounted in ECT probe were examined. The experimental result showed that the sensor signal noise in inserting ECT probe was higher than that in return process and the vibration in insert process had a certain outstanding frequency. It was effective for the countermeasure of sensor signal noise to attach the long and flexible guide probe to the top of ECT probe.

CiNii Books

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人日本機械学会  

This paper deals with the occurrence mechanism of the squeal and chatter phenomena generated in a bicycle disk brake and their countermeasures. From the results by bench test apparatus, it was made clear that the squeal is in-plane vibration in the direction of rotor surface with frequency 1 kHz caused by the frictional characteristics with negative slope with respect to the relative velocity generated in the vibration system including brake components and spokes, and the chatter is another frictional vibration with frequency 500 Hz in which the squeal occurring in the in-plane direction of rotor and the out-of-plane vibration of rotor due to Coulomb friction are superimposed through the internal resonance relation caused by temperature increase of rotor during braking. The measures for squeal and chatter were taken on spokes and hub, and the validity was confirmed by using bench test apparatus.

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その他リンク： http://hdl.handle.net/10559/7091

記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：社団法人日本機械学会  

This paper deals experimentally with the squeal and chatter phenomena generated in mountain bike disk brakes. First, the authors performed the traveling test using actual bicycle on downhill road in a mountain. As the results, there are two kinds of frictional self-excited vibrations in the bicycle disk brakes called by squeal with frequency of 1 kHz and by chatter with frequency of 500 Hz. In order to regenerate the squeal and the chatter, a bench test apparatus by actual bicycle was set up and their characteristics were experimentally examined. By using the bench test apparatus, it was made clear that their frequencies were independent of temperature of pad and rotating speed of rotor, and the chatter was generated in a certain limited region of high temperature though the squeal occurred in arbitrary temperature region of pad.

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その他リンク： http://hdl.handle.net/10559/7090

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

The nonlinear liquid motion in a partially filled rectangular tank with a core barrel is investigated. Basic equations are derived by employing the variational principle. Unlike in case of a rectangular tank without a core barrel, it is difficult to obtain analytically the modes of vibration and the natural frequencies of the liquid motion in a rectangular tank with a core barrel. Therefore, the modes of vibration and the natural frequencies are obtained by using the finite elements method. It was shown by the previous research on the nonlinear liquid motion in a rectangular tank that the internal resonance may occur at the water depth where the natural frequency of the second mode accords with twice the natural frequency of the first mode. In case of a rectangular tank with a core barrel, the water depth satisfying this condition was found by the relations between water depth and the natural frequency. An experiment was carried out at this water depth using the model tank. The occurrence of the internal resonance was confirmed by the experimental results. The effects of radius and location of a core barrel on the condition of the internal resonance was discussed. It is shown that the water depth where the internal resonance occurs becomes higher as the radius of a core barrel becomes larger or that location becomes closer to the center of the tank.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

In this paper, experimental and analytical investigations are performed to study the design method of multiple dynamic absorbers for effectively suppressing chatter generated in the end milling operations. The triple and sixfold absorbers are attached to a rotating collet holder. Using a machining center, up-cut milling tests are performed to study the effect of the absorbers on chatter experimentally. The critical axial depth of cut at the onset of chatter with and without the absorbers is compared. A dynamic milling model with the absorbers is modelled as a lumped mass system with orthogonal degrees of freedom in the feed and normal directions. Stability of the milling process is investigated by performing a complex eigenvalue analysis. It is confirmed experimentally that an improvement in the chatter-free axial depth of cut can be obtained using the sixfold dynamic absorbers. The analytical results reveal the optimal natural frequency and damping ratio of the absorbers in order to increase the chatter free axial depth of cut.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

It is known that, under appropriate conditions, the amplitude of vibration of some blades in the mistuned bladed disk system become large compared to what would be predicted by an analysis of a perfectly tuned system. In this paper, the rms responses of the mistuned bladed disk system subjected to deterministic excitation and random excitation with the spatial correlations are investigated. Because the mistune arrangement effects the rms response of the mistuned system, the rms response of all mistune arrangements are calculated in case that number of mistuned blades is 8. In the case of the large and small rms response, the effect of the ratio of amplitude of the deterministic and the random excitation on the averaged wave number components of the mistuning arrangements is discussed. It is shown that the averaged wave number components when both the deterministic and the random excitations act simultaneously differs from that in the case that both act individually. It is also noted that those averaged wave number components of the mistuning arrangement do not change linearly to the ratio of amplitude of the deterministic and random excitation.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Three-dimensional nonlinear liquid motion in a partially filled rectangular tank supported by pendulum is investigated. In this analysis, the nonlinearities of the liquid surface oscillation and pendulum motion are considered. Basic equations of liquid elevation and pendulum angle are derived by employing the variational principle. The nonlinear differential equations are derived by applying Galerkin's method to the basic equations. The characteristic of the nonlinear coupled oscillation is discussed. The coupled natural frequency is obtained by linearizing the derived equations. By the coupled natural frequency analysis, it is showed that, when the aspect ratio of the tank is a little less than integer, the three-dimensional liquid oscillation can occur. It is confirmed that the three-dimensional liquid oscillation occurred in numerical simulation and experimental results. A fairly good agreement is found between both results. It is shown that the three-dimensional nonlinear liquid motion plays an important role of liquid oscillation in a rectangular container supported by pendulum.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

In the present study, the critical axial depth of cut at the onset of chatter in the end milling operation determined by Akaike's Information Criterion (AIC) was evaluated. AIC was applied to the time history of tool vibration displacement in order to determine the critical axial depth of cut. The axial depth of cut that makes the value of AIC minimum was defined as the critical axial depth of cut. Comparing with the critical axial depth of cut obtained using the presented AIC method and that by detecting the emergence of the amplitude of the chatter frequency, there are fairly good agreements in both results.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

In this paper, the effect of the dynamic absorbers on regenerative chatter generated in the end milling operations is qualitatively evaluated by the stability analysis for the simple analytical milling model and the cutting test with the tool holder attached the dynamic absorbers. It is made clear the relationship between the suppression effect of the dynamic absorbers and the tuning parameters of them. It is shown that the greater improvement in the critical axial depth of cut is observed in the wide range of spindle speed by the properly tuned dynamic absorbers.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This work deals with the design of a dynamic absorber to quench the regenerative chatter in end milling process. By solving the eigenvalue problem of the dynamic milling model with a dynamic absorber, the stability of this system was investigated. It was made clear that by installing a dynamic absorber tuned to the proper natural frequency of a dynamic absorber and the proper damping of a dynamic absorber, the critical limiting depth of cut was improved in the wide range of spindle speed.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This work deals analytically and experimentally with the stability chart of the regenerative chatter vibration in end milling process. Dynamic milling model was considered to have two orthogonal degrees of freedom. By solving the eigenvalue problem of this model, we investigate stability of this dynamic milling system. As a result the agreement between the analytical and experimental results on the stability chart in up cut milling and down cut milling was confirmed. Furthermore, we investigate the effect of the vibration characteristics of tool and the instantaneous angular immersion of tool on stability chart.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This paper deals with the analytical reproduction of the squeal phenomena generated in a certain type of bicycle disc brake unit. It was made clear that the squeal was in-plane vibration in the direction of a disc surface with frequency about 1000Hz caused by frictional characteristics with negative slope with respect to the relative velocity according to the numerical analysis of the both in-plane and out-of-plane vibrations, and was generated in the vibration system including the brake unit and spokes. The analytical model of the bicycle disc brake system was set up. The resulting frequency of the squeal and the unstable vibration modes of spokes and rotor agreed well with the experimental ones.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This work deals analytically with the optimal design of dynamic absorber for quenching squeal generated in car disk brakes. In previous our work, the analytical model of car disk brake squeal was developed. In this paper, the dynamic absorber is attached to this model, and the controlling effect of squeal of the dynamic absorber is presented. From analytical results, optimal parameter of damping ratio, the natural frequency, and the effect of mass ratio of dynamic absorber is established. Moreover, the relationship between the attachment position of dynamic absorber and the effect of that is investigated.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This paper deals with the occurrence mechanism of the squeal phenomena generated in a new type of a bicycle disk brake unit and its countermeasure experimentally and analytically. It was made clear that the squeal was in-plane vibration in the direction of a disk surface with frequency 650 Hz caused by frictional characteristics with negative slope with respect to the relative velocity, and was generated in the vibration system including the brake unit and spokes, in the same manner of an old type of disk brake unit. The simple analytical model of the bicycle disk brake system was set up. Some features of the squeal phenomena were made clear analytically and it was confirmed that the analytical results agreed well with the experimental ones.

CiNii Books

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DOI： 10.1299/kikaic.72.380

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

The aim of this work is producing the disc brake that the squeal is not generated fundamentally. A design manual of the disc brake considering support methods and support positions of caliper was proposed. On the other hand, a dynamic absorber was attached to a basic self-excited vibration system caused by Coulomb's friction, and optimal parameters of dynamic absorber which controls the squeal were studied analytically. Moreover, optimal dynamic absorber from analysis was attached to an experimental apparatus, and the effectiveness of the dynamic absorber was confirmed

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

This work deals experimentally with the countermeasure against squeal phenomena generated in mountain bike disk brakes. In previous our work, it was made clear that the squeal is in-plane vibration in the direction of disk surface with frequency 1kHz caused by the frictional characteristics with negative slope with respect to the relative velocity generated in the vibration system including brake components and spokes. A dynamic absorber was attached to hub in order to control squeal, and its validity was confirmed by using a bench apparatus. From experimental and analytical results, optimal parameter of damping ratio, the natural frequency, and the effect of mass ratio of dynamic absorber is established.

CiNii Books

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

Analyzing the occurrence mechanism of the squeal phenomena in Bicycle Disk Brakes, it became cleared that a rotor vibrates in the direction of in-plane under in squeal, and squeal phenomena are self-excited vibration caused by frictional characteristics with negative slope with respect to the relative velocity generated in the vibration system. This paper deals experimentally with the difference of squeal phenomena between in the initial model and in the new model. This system is easy to generate the squeal because there is a certain internal resonance relationship between the out-of-plane and in-plane coupled natural frequencies.

CiNii Books

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DOI： 10.1299/kikaic.70.3398

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記述言語：日本語   出版者・発行元：一般社団法人日本機械学会  

When verifying the measure against control of the squeal in a car disk brake, the manufacturers have investigated using the actual car and using the dynamo which took out only the brake unit. In this paper, in addition to two experiment dynamos installed a brake unit by the different method, it experiments in squeal using the actual car, and these common features and differences are clarified. Moreover, the measure against control of the squeal common to these is verified experimentally, and the validity is shown by proposing the general measure against control of the squeal in a different vibration characteristic.

CiNii Books

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開催年月日： 2022年6月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2021年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2021年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2020年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2020年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2019年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2018年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2017年11月

記述言語：英語   会議種別：口頭発表（一般）  

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開催年月日： 2017年7月

記述言語：英語   会議種別：口頭発表（一般）  

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開催年月日： 2016年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2015年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2014年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2014年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2013年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2012年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2012年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2011年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2011年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2010年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2009年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2008年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2007年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2006年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2005年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2004年8月

記述言語：日本語   会議種別：口頭発表（一般）  

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開催年月日： 2003年9月

記述言語：日本語   会議種別：口頭発表（一般）  

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