Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing最新文献

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Active noise control for a moving evaluation point using transfer function interpolation 利用传递函数插值对移动评价点进行主动噪声控制
T. Okuyama, H. Matsuhisa, H. Utsuno, J. Park
{"title":"Active noise control for a moving evaluation point using transfer function interpolation","authors":"T. Okuyama, H. Matsuhisa, H. Utsuno, J. Park","doi":"10.1299/JSMEC.49.865","DOIUrl":"https://doi.org/10.1299/JSMEC.49.865","url":null,"abstract":"In active noise control (ANC), the transfer function of the error path (TFEP) changes when the evaluation point moves, and it causes a bad performance of noise control. In this study, a new method to identify TFEP at an arbitrary point is proposed. This method is based on the plane wave theory, and the impulse response of TFEP is derived analytically as a function of the position, using measured impulse responses at two points. Applying this method to update the compensation filter of the varying TFEP in a test tube, it is verified by the experiment that the noise can be suppressed significantly without divergence.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132019185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An Experimental Study on Sound Radiation Characteristics of Radial Tires for Vehicles, Due to Excitation 车辆子午线轮胎受激励声辐射特性试验研究
Byoung-sam Kim, Bong-Goo Rhee, Tae-Keun Lee
{"title":"An Experimental Study on Sound Radiation Characteristics of Radial Tires for Vehicles, Due to Excitation","authors":"Byoung-sam Kim, Bong-Goo Rhee, Tae-Keun Lee","doi":"10.1299/JSMEC.49.873","DOIUrl":"https://doi.org/10.1299/JSMEC.49.873","url":null,"abstract":"Vibration characteristics of a tire play an important role to judge a ride comfort ability and sound quality for a vehicle. In this study, the experimental investigation on the sound radiation of a radial tire has been examined. Based on the sound intensity techniques, the sound pressure field and the sound radiation are measured. It turns out that air pressure in tire, tread patterns, and aspect ratio of the tire governs the sound radiation characteristics. Then a numerical analysis for the tire element is conducted. During analysis, the tire element is modeled as an elastic ring. The comparison shows that the numerical output correlates to the experimental data.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"385 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116485406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Computational Fluid Dynamic Analysis of the Flow around the Pivot Bearing of the Centrifugal Ventricular Assist Device 离心式心室辅助装置轴心轴承周围流动的计算流体动力学分析
M. Nishida, T. Yamane, O. Maruyama, Y. Sankai, T. Tsutsui
{"title":"Computational Fluid Dynamic Analysis of the Flow around the Pivot Bearing of the Centrifugal Ventricular Assist Device","authors":"M. Nishida, T. Yamane, O. Maruyama, Y. Sankai, T. Tsutsui","doi":"10.1299/JSMEC.49.837","DOIUrl":"https://doi.org/10.1299/JSMEC.49.837","url":null,"abstract":"Flow mechanisms within a monopivot centrifugal pump were clarified in order to prevent stagnation around the pivot bearing, which may cause thrombogenesis. We focused on the geometric effects of the pump, which included the effects of the washout hole diameter, the pivot friction area and the back gap width of the impeller relative to the washout around the pivot bearing. Flow patterns were carefully examined around the pivot bearing, including the region inside the washout hole and the back gap of the impeller, by computational fluid dynamic analysis. Based on the results from the computational fluid dynamic analyses, we found that a balance relationship between the washout hole diameter and the back gap width of the impeller affected the secondary flow toward the pivot bearing that eliminated the stagnation around the pivot bearing. In addition, while increasing in the pivot friction area eliminated stagnation around the pivot bearing, it also increased hemolysis within the pump.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124933949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Experimental Results of Converted NAH Method 转换法的实验结果
Masao Nagamatsu
{"title":"Experimental Results of Converted NAH Method","authors":"Masao Nagamatsu","doi":"10.1299/JSMEC.49.670","DOIUrl":"https://doi.org/10.1299/JSMEC.49.670","url":null,"abstract":"Among sound source localization methods, the acoustic intensity (AI) method is widely used in industry. On the other hand, nearfield acoustic holography (NAH) method, which is also a localization method, has not spread to industry use because of its difficulty in measuring high frequency measurement. For high frequencies, the NAH method requires a very large number of measurement points, which results in a prolonged measurement time and very large size. I have proposed a theoretically converted NAH method(1),(2), which uses the extra spatial-domain spectrums in the backpropagating computation of NAH method. This method can measure the sound field using a reasonable number of measurement points even for high frequencies. As a result, the workload of measurement is reduced to the same level as that using acoustic intensity method. In this paper, the theory of the proposed method is explained, and some experimental results are presented to verify this method.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114307055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Study of the Pneumatic Counterweight of Machine Tools Conventional and Active Pressure Control Method 机床气动配重常规与主动压力控制方法的研究
M. Tsai, M. Shih
{"title":"A Study of the Pneumatic Counterweight of Machine Tools Conventional and Active Pressure Control Method","authors":"M. Tsai, M. Shih","doi":"10.1299/JSMEC.49.890","DOIUrl":"https://doi.org/10.1299/JSMEC.49.890","url":null,"abstract":"The pneumatic counterweight method is a suitable counterweight method used for machine tool owing to its high speed and force capacity, combined with low price and clean operation. However, the preset pressure cannot be hold at higher traveling rate if the conventional pneumatic counterweight is applied. In this study, rather than using the conventional pressure compensation method, the active pressure control method was designed as an alternative to the pneumatic counterweight driven by a linear motor. The fuzzy sliding mode controller was designed and implemented for regulating the pressure using the servo valve. The experimental results demonstrate that the variation of the pressure in the pneumatic cylinder can be hold within the range ±15kPa by using active pressure control method.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115548979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Frequency Characteristics of Ultrasonic Plastic Welding 超声波塑料焊接的频率特性
J. Tsujino, M. Hongoh, M. Yoshikuni, H. Miura, T. Ueoka
{"title":"Frequency Characteristics of Ultrasonic Plastic Welding","authors":"J. Tsujino, M. Hongoh, M. Yoshikuni, H. Miura, T. Ueoka","doi":"10.1299/JSMEC.49.634","DOIUrl":"https://doi.org/10.1299/JSMEC.49.634","url":null,"abstract":"Welding characteristics and temperature rises at plastic welding part over frequency range from 27kHz to 180kHz were studied. Ultrasonic plastic welding systems of 27, 40, 67, 94, 150 and 180kHz were developed and direct welding characteristic of lapped plastic sheets were measured. The temperature rises at welding surfaces of lapped 1.0-mm-thick polypropylene and polymethyl methacrylate plates were measured using thermocouples inserted between plate specimens. And also, temperature rise distributions in cross sections of the lapped plate specimens were measured using a thermotracer. The longitudinal vibration systems used for ultrasonic plastic welding consisted of a bolt-clamped Langevin type longitudinal vibration source using two or four piezoelectric ceramic (PZT) rings, a stepped horn and a catenoidal horn with a 4-mm- or 8-mm-diameter welding tip. Using higher frequency system, temperature rise measured at the welding part were higher. Maximum temperature rise measured using thermocouples and a thermotracer was over 350°C under excessive condition.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126312588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Allocating Capacity for Export-Oriented Apparel Production in a Developing Country Using Multi-Item Newsboy Problem 基于多项目报童问题的发展中国家出口导向型服装生产产能配置
Kader Md. Mohafiqul, H. Narita, Lian-Yi Chen, H. Fujimoto
{"title":"Allocating Capacity for Export-Oriented Apparel Production in a Developing Country Using Multi-Item Newsboy Problem","authors":"Kader Md. Mohafiqul, H. Narita, Lian-Yi Chen, H. Fujimoto","doi":"10.1299/JSMEC.49.942","DOIUrl":"https://doi.org/10.1299/JSMEC.49.942","url":null,"abstract":"The purpose of this paper is to develop an efficient method to allocate capacity for export-oriented production of apparels using multi-item newsboy problem in developing countries. Export oriented apparel production in developing countries is fully make-to-order. In this article we describe a method that prescribes three-way solutions depending on the firm’s own capacity. Leasing out of capacity is applied when the firm’s capacity is higher than that required for production demand. In an opposite situation, the firm subcontracts or employs overtime to meet the production requirement. In case of unavailability of subcontract production the firm has to adjust its production order with available capacity. Three factors to represent the probability of leasing, overtime and subcontracting have been used in the model. This helps the decision maker to analyze favorable or worse situation planning. Some previously developed heuristics have been modified to solve the constrained problem. A numerical example illustrates the validity of the model and shows that one of the heuristics performs better than all the previous when the resource is scarcer.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127612361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Global Robust Optimization Using Kriging Based Approximation Model 基于Kriging逼近模型的全局鲁棒优化
Kwon-Hee Lee, G. Park
{"title":"A Global Robust Optimization Using Kriging Based Approximation Model","authors":"Kwon-Hee Lee, G. Park","doi":"10.1299/JSMEC.49.779","DOIUrl":"https://doi.org/10.1299/JSMEC.49.779","url":null,"abstract":"The current trend of design methodologies is to make engineers objectify or automate the decision-making process. Numerical optimization is an example of such technologies but it may produce uncontrollable uncertainties. To increase manageability of such uncertainties, the Taguchi method, reliability-based optimization and robust optimization are commonly being used. The main functional requirement of a mechanical system is to obtain the target performance with maximum robustness. In this research, a design procedure for global robust optimization is developed using kriging and global optimization approaches. Robustness is determined by kriging model to reduce a number of real functional calculations. The simulated annealing algorithm of global optimization methods is adopted to determine the global robust optimum of a surrogate model. As the postprocess, the global optimum is further refined by applying the first-order second-moment approximation method. Mathematical problems and the MEMS design problem are investigated to show the validity of the proposed method.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126389438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 70
Study on Acoustic Cavitations in the Ultrasonic Radiation Field 超声辐射场中声空化现象的研究
Chaoqun Wu, N. Nakagawa, M. Fujihara
{"title":"Study on Acoustic Cavitations in the Ultrasonic Radiation Field","authors":"Chaoqun Wu, N. Nakagawa, M. Fujihara","doi":"10.1299/JSMEC.49.758","DOIUrl":"https://doi.org/10.1299/JSMEC.49.758","url":null,"abstract":"Applications of ultrasound in cleaning industry and biomedical field are owed to acoustic cavitations. To investigate behaviors of acoustic cavitations, a standing wave field of piston ultrasonic radiation was set up in this paper. And the behaviors of acoustic bubbles in this standing wave field were studied experimentally. Expressions of sound pressure in this standing wave field with di ff erent boundary conditions were discussed. Drawn by the forces (Bejerknes forces, Buoyancy forces, etc.), stable bubbles distributed regularly in the standing wave field. Experiments were conducted to validate that the distribution of stable bubbles can visualize the distribution of sound pressure. Erosion tests on aluminum foiling demonstrate that erosion only occurs in sound pressure anti-node field which was caused by collapsed acoustic bubbles. The radial oscillation of acoustic bubble was observed using high speed camera; it was found that the bubble’s radius was increased with increase of negative sound pressure.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114495426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
A Systematic Approach for the Structural Synthesis of Differential-Type South Pointing Chariots 差动式南指战车结构综合的系统方法
Hong-Sen Yan, C. Chen
{"title":"A Systematic Approach for the Structural Synthesis of Differential-Type South Pointing Chariots","authors":"Hong-Sen Yan, C. Chen","doi":"10.1299/JSMEC.49.920","DOIUrl":"https://doi.org/10.1299/JSMEC.49.920","url":null,"abstract":"South Pointing Chariot is one of the important mechanical inventions in ancient China. It achieves the purpose of fixing direction by applying mechanical devices. All existing designs can be classified into two types: “fixed-axis type” and “differential type”. In this study, firstly, the existing designs are analyzed and decomposed into four parts: two inputs, a transmission part, a passive feedback mechanism, and one output. Secondly, because some existing designs have the same topological structures, new representations are used to identify different axial directions of joints and characteristics of members. Thirdly, a design methodology is proposed to systematically synthesize all feasible design concepts of differential-type South Pointing Chariots. Finally, three examples are provided.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131015016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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