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JSME international journal : bulletin of the JSME最新文献

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Flying Characteristics of Magnetic Disk Slider with Dust : 1st Report Influence of Dust Adhesion to Slider Rails on Flying Height 带尘磁盘滑块的飞行特性:粉尘对滑块导轨附着的影响
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/kikaic.53.968
M. Tokuyama, Katsuyuki Tanaka, Y. Yamaguchi, Y. Takeuchi
{"title":"Flying Characteristics of Magnetic Disk Slider with Dust : 1st Report Influence of Dust Adhesion to Slider Rails on Flying Height","authors":"M. Tokuyama, Katsuyuki Tanaka, Y. Yamaguchi, Y. Takeuchi","doi":"10.1299/kikaic.53.968","DOIUrl":"https://doi.org/10.1299/kikaic.53.968","url":null,"abstract":"","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116827319","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
An Experimental Study on the Applicability of the Light Extinction Method to a High Density Particle Cloud 光消法在高密度粒子云中的适用性实验研究
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1468
T. Kamimoto, H. Kando, Haruki Kobayashi
{"title":"An Experimental Study on the Applicability of the Light Extinction Method to a High Density Particle Cloud","authors":"T. Kamimoto, H. Kando, Haruki Kobayashi","doi":"10.1299/KIKAIB.53.1468","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1468","url":null,"abstract":"The applicability of the light extinction method to a dense spray like diesel sprays was investigated experimentally using a glass bead-water suspension having a similar dimension to that of an ordinary diesel spray. The transmission was measured against particle concentration using the detection angle as a parameter. The results showed that the light extinction principle holds at a high particle concentration which is equivalent to that of diesel sprays, and that the apparent extinction coefficient, which was obtained experimentally, coincides within an accuracy of 5 percent with that theoretically calculated.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127415697","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
The Characteristics of Bolted Joints Subjected to External Bending Moments : Analysis of the Case Where Clamped Parts are Pipe Flanges by Three-Dimensional Theory of Elasticity 外弯矩作用下螺栓连接的特性——用三维弹性理论分析被夹件为管道法兰的情况
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.2018
T. Sawa, T. Morohoshi, K. Yamamoto
{"title":"The Characteristics of Bolted Joints Subjected to External Bending Moments : Analysis of the Case Where Clamped Parts are Pipe Flanges by Three-Dimensional Theory of Elasticity","authors":"T. Sawa, T. Morohoshi, K. Yamamoto","doi":"10.1299/JSME1987.30.2018","DOIUrl":"https://doi.org/10.1299/JSME1987.30.2018","url":null,"abstract":"Few investigations have been carried out on the characteristics of bolted joints subjected to external bending moments, or, more specifically, on axi-asymmetric loads such as the clamping force of bolts and the external bending moment. In this paper, the clamping effect and the force ratio in the case where clamped parts are pipe flanges subjected to external bending moments are analyzed as an axi-asymmetric problem using the three-dimensional theory of elasticity. For verification, experiments are carried out with respect to the distribution of contact stress and the force ratio for the external bending moment (relationship between an increment of bolt axial force and the external bending moment). Analytical results are in fairly good agreement with experimental ones.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125379957","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: 5
Improvement of the Forming Limit of Sheet Metals by Removal of Surface Roughening with Plastic Strain 消除塑性应变表面粗化提高板料成形极限
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.2034
N. Takakura, K. Yamaguchi, M. Fukuda
{"title":"Improvement of the Forming Limit of Sheet Metals by Removal of Surface Roughening with Plastic Strain","authors":"N. Takakura, K. Yamaguchi, M. Fukuda","doi":"10.1299/JSME1987.30.2034","DOIUrl":"https://doi.org/10.1299/JSME1987.30.2034","url":null,"abstract":"Surface roughening of sheet metals with plastic strain is removed at a given strain during the forming process, and its effect on the improvement of the forming limit is investigated. As a preliminary examination to estimate how the onset of localized necking is delayed by the removal of surface roughness, a rigid-plastic FEM simulation is first made. Experiments for soft aluminium and copper sheets are also carried out, and the increase in forming limit strain is examined for a few strain paths. It is shown that the improvement of the forming limit is considerable in the stretch forming region where the major and minor strains in the plane of a sheet are positive. For balanced biaxial stretching, for example, the forming limit strain can be increased up to about 1.3 to 1.4 times as large as that for ordinary in-plane stretching.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121853410","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: 5
A Study of the Dynamic Damper with a Preview Action : Optimal Design of a Dynamic Damper with a Preview Action 具有预瞄作用的动态阻尼器的研究&具有预瞄作用的动态阻尼器的优化设计
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.2003
N. Tanaka, Y. Kikushima
{"title":"A Study of the Dynamic Damper with a Preview Action : Optimal Design of a Dynamic Damper with a Preview Action","authors":"N. Tanaka, Y. Kikushima","doi":"10.1299/JSME1987.30.2003","DOIUrl":"https://doi.org/10.1299/JSME1987.30.2003","url":null,"abstract":"This paper deals with a method of designing a dynamic damper with a preview action. It is the purpose of this investigation to achieve an optimal design of the dynamic damper with a preview action, which is applied to a vibratory system with damping. First, in order to attain a systematic design of the dynamic damper system, a modern control theory is used, and two kinds of design equations are derived; one for optimal design parameters and the other for optimal preview action. Then, from the viewpoint of nonlinear programming, these equations are solved, presenting design charts of the dynamic damper with a preview action. Furthermore, a dominant factor on the control effect is investigated. Finally, the design procedure proposed in the present paper is applied to the conventional dynamic damper, and the control effect for the suppression of the impact vibration is discussed.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126548785","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: 0
Effect of Inlet Swirl on the Turbulent Flow in an Axially Rotating Pipe 进口旋流对轴向旋转管内湍流的影响
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1150
K. Nishibori, K. Kikuyama, M. Murakami, Takeshi Kimura
{"title":"Effect of Inlet Swirl on the Turbulent Flow in an Axially Rotating Pipe","authors":"K. Nishibori, K. Kikuyama, M. Murakami, Takeshi Kimura","doi":"10.1299/KIKAIB.53.1150","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1150","url":null,"abstract":"The effect of the inlet swirl on the flow in a pipe rotating about its axis was investigated experimentally, when a honeycomb was mounted on the inlet portion of a rotating pipe. The tangential component of velocities exhibited a forced vortex type profile and the axial velocity component was approximately in a fully developed turbulent flow. As the flow proceeded down-stream, the tangential velocity profile, having a straight velocity gradient, was seen to be deformed into a concave type. In this process, the swirling component of velocities near the pipe wall was seen to grow up over the peripheral speed of the pipe wall, which was confirmed by flow visualization. The measurements of the Reynolds stress components showed that the solid body rotation weakened the stabilizing effect which was expected from the rotational flow motion.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134127370","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: 6
A study of the vapor explosion mechanism with single drops of high-temperature liquids and volatile liquids. 高温液体和挥发性液体单滴蒸汽爆炸机理的研究。
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/JSME1987.30.1972
Y. Iida, T. Takashima, R. Akiyoshi
{"title":"A study of the vapor explosion mechanism with single drops of high-temperature liquids and volatile liquids.","authors":"Y. Iida, T. Takashima, R. Akiyoshi","doi":"10.1299/JSME1987.30.1972","DOIUrl":"https://doi.org/10.1299/JSME1987.30.1972","url":null,"abstract":"The vapor explosion produced by a single drop or plural drops of molten LiNO3 being dropped into tapped ethanol is studied by high-speed photography and pressure trace measurement. The temperature range of fragmentation to occur is firstly examined. The pressure trace with fragmentation is divided into two groups. Under the relatively large subcooling condition of a cold liquid, the typical vapor explosion whose pressure trace has at least three peaks and a period of reduced pressure occurs. The vapor bubble behavior is proved to be well-consistent with the pressure trace. The propagation phenomenon of vapor explosion is photographed under plural-drop experiments. The existence of a lengthy state of coherency is proved, and the pressure behavior is concluded as the control factor of the coherency. A qualitative and hypothetical modeling of the vapor explosion mechanism is made on the basis of the experimental results.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132840084","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
Characteristics of Unsteady Lift in Transitional Accelerated Flow 过渡加速流动中的非定常升力特性
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1224
Yoshifumi Ohgami, T. Akamatsu
{"title":"Characteristics of Unsteady Lift in Transitional Accelerated Flow","authors":"Yoshifumi Ohgami, T. Akamatsu","doi":"10.1299/KIKAIB.53.1224","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1224","url":null,"abstract":"Characteristics of unsteady lift in transitional accelerated flow are studied theoretically and experimentally. A theoretical method for an unsteady force acting on arbitrary-shaped airfoils in two-dimensional potential flow is presented. With this method, the force due to the apparent mass, initial lift and drag of inditial response are obtained analytically and the force due to the wake vortex is calculated by the discrete vortex method. A numerical study shows that unsteady lift in a transitional accelerated flow is mainly characterized by a Strouhal number as in an oscillating flow. An experimental study was also done to verify this.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"80 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126219847","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: 0
A Fundamental Study of Fluidization and Heat Transfer Characteristics around a Horizontal Heated Circular Cylinder Immersed in a Fluidized Bed 浸没在流化床中的水平加热圆柱的流态化和传热特性的基础研究
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIB.53.1284
Y. Kurosaki, H. Ishiguro, Kiyoshi Takahashi
{"title":"A Fundamental Study of Fluidization and Heat Transfer Characteristics around a Horizontal Heated Circular Cylinder Immersed in a Fluidized Bed","authors":"Y. Kurosaki, H. Ishiguro, Kiyoshi Takahashi","doi":"10.1299/KIKAIB.53.1284","DOIUrl":"https://doi.org/10.1299/KIKAIB.53.1284","url":null,"abstract":"The fluidization and heat transfer chracteristics around a single horizontal heated circular cylinder immersed in a fluidized bed are fundamentally studied in this paper to elucidate the mechanism of heat transfer augmentation in a fluidized bed heat exchanger. The state of fluidization of p. articles is observed for various fluidization velocities covering fixed and fluidized beds. Further-more, the fluctuating pressure and the local heat transfer coefficient around the cylinder are measured. The fluidization patterns of the bed of the fixed, bubbling, slugging and turbulent states correspond to the fluctuating pressure around the cylinder. The local behavior of p. articles near the cylinder surface are classified into three categories : (1) the still region, ( 2 ) the sliding region and ( 3 ) the mixing region. The position where the maximum local heat transfer coefficient takes p. lace is located nearly on the boundary between the sliding and mixing regions and moves toward the rear side along with the boundary with an increase of fluidization velocity.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126716200","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
Notch Tensile Strength of Ductile Materials (2nd Report) 延性材料缺口抗拉强度(第二次报告)
JSME international journal : bulletin of the JSME Pub Date : 1987-12-16 DOI: 10.1299/KIKAIA.53.809
T. Majima, Y. Ogata, H. Nakazawa
{"title":"Notch Tensile Strength of Ductile Materials (2nd Report)","authors":"T. Majima, Y. Ogata, H. Nakazawa","doi":"10.1299/KIKAIA.53.809","DOIUrl":"https://doi.org/10.1299/KIKAIA.53.809","url":null,"abstract":"Notch tensile tests are carried out to evaluate the effects of stress triaxiality at the net section and uniaxial tensile properties on the notch tensile strength. Notched specimens with U-shaped circumferential notches of three different notch radii and three different notch depths are employed. These specimens are made of four kinds of ductile materials chosen so that the difference in ductility may be wide. The notch strength ratio increases with the stress triaxiality factor proportional to the ratio of hydrostatic to equivalent stress, and with the ratio of local to total elongation in engineering stress-strain curves obtained from uniaxial tension tests. The notch strength ratio is determined by the multiplication effect of these two factors. The value of the notch strength ratio can be predicted by the experimental equation composed of the product of the ratio of local to total elongation and the stress triaxiality factor. Notch strengthening is caused by the above two primary factors.","PeriodicalId":286527,"journal":{"name":"JSME international journal : bulletin of the JSME","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124755413","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: 3
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