Transactions of the JSME (in Japanese)最新文献_第8页

Crystal plasticity analysis of the suppression of dislocation accumulation during the production process of semiconductor devices 半导体器件生产过程中抑制位错积累的晶体塑性分析

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/JSMEHOKKAIDO.2016.54.53

K. Iwayama, Michihiro Sato, T. Ohashi, T. Maruizumi

引用次数: 0

Proposal of a new industry-university collaboration scheme based on a problem co-creating type technology circulation model 基于问题共创型技术循环模型的新型产学研合作方案的提出

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.21-00339

Koichi Kato, K. Fushinobu, Y. Takeda

引用次数: 0

高密度単一円柱バイオマスブリケットの燃焼時間に及ぼすバイオマス原材料の影響（人工的に調整したバイオマス原材料を用いた研究）生物质原材料对高密度单一圆柱生物质缸体燃烧时间的影响(使用人工调节的生物质原材料的研究)

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.22-00136

Hiroyuki Ito, M. Miura, R. Endō, Ryo Iwasaki

引用次数: 0

Research on evaluation of hydrogen jet behavior and assessment of cooling loss reduction by measuring local heat flux in direct injection hydrogen engines 直喷式氢发动机氢射流性能评价及局部热流密度降低冷却损失评价研究

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/TRANSJSME.18-00427

Yoshihisa Kojiya, Ryota Sato, Hiromi Saito, Daijiro Ishii, Masakuni Oikawa, Y. Takagi, Y. Mihara

{"title":"Research on evaluation of hydrogen jet behavior and assessment of cooling loss reduction by measuring local heat flux in direct injection hydrogen engines","authors":"Yoshihisa Kojiya, Ryota Sato, Hiromi Saito, Daijiro Ishii, Masakuni Oikawa, Y. Takagi, Y. Mihara","doi":"10.1299/TRANSJSME.18-00427","DOIUrl":"https://doi.org/10.1299/TRANSJSME.18-00427","url":null,"abstract":"The authors have proposed a new combustion process called the Plume Ignition Combustion Concept (PCC), in which a plume of the hydrogen jet is spark-ignited just after hydrogen is injected to accomplish combustion of a plume of rich mixture. With an optimal combination of injection timing, ignition timing and controlled jet geometry, this combustion process markedly improved thermal efficiency by reducing cooling loss which is an essential element to be reduced for improving thermal efficiency in hydrogen engine. In this study, in order to evaluate the cooling loss in hydrogen engine, characteristics of local cooling loss of PCC combustion are evaluated by measuring heat flux in two locations, one in the leading location and the others in the trailing location in the combustion chamber. As a result, it was found that local cooling heat flux in the leading direction of the jet injected showed extremely high level compare to trailing direction and spatially averaged cooling loss of the combustion chamber in injection angle of 15° of PCC combustion. By enlarging injection angle to 25°, thermal efficiency was improved and local heat flux in the leading direction is also mitigated. This result indicated that capturing local heat flux, especially in the leading direction of the injected jet, is a key to improve thermal efficiency.","PeriodicalId":341040,"journal":{"name":"Transactions of the JSME (in Japanese)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123349753","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

Study on kingpin axis behavior of front suspension under the turning lateral force. 车削侧向力作用下前悬架主销轴特性研究。

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.22-00302

Tetsuaki Kawata, Tadashi Kouno, H. Sakuma

引用次数: 0

Study on promotion of lean combustion by oxygen enrichment using a rapid compression expansion machine 快速压缩膨胀机富氧促进贫燃烧的研究

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.21-00168

Kazuki Harada, S. Ando, Yuya Ito, Y. Kawasoe, Hideki Hashimoto, O. Moriue

{"title":"Study on promotion of lean combustion by oxygen enrichment using a rapid compression expansion machine","authors":"Kazuki Harada, S. Ando, Yuya Ito, Y. Kawasoe, Hideki Hashimoto, O. Moriue","doi":"10.1299/transjsme.21-00168","DOIUrl":"https://doi.org/10.1299/transjsme.21-00168","url":null,"abstract":"While lean combustion in SI engine is one of the promising methods to increase the thermal efficiency and reduce the pollutant emissions, it causes instability of ignition and combustion due to the low burning velocity. Thus, we propose to increase the combustion intensity by incorporating oxygen enrichment with lean combustion. The objective of present study is to investigate the effects of oxygen enrichment on lean combustion behavior in SI engine. Premixed methane-air-oxygen mixture was combusted in a rapid compression expansion machine with varying their concentration. Experimental conditions were determined by identifying the conditions where the laminar burning velocity significantly changes by oxygen enrichment with 1-D simulation of premixed combustion. Histories of pressure were measured to evaluate heat release rate. Luminous flame was captured by a high-speed camera to observe the flame propagation. As a result, laminar burning velocity increased with oxygen concentration, which caused reduction of combustion period and enhancement of the indicated thermal efficiency. On the other hand, this trend was suppressed when the fuel concentration is lower than 6.85 %. In addition, when the fuel concentration is relatively large, flame propagation speed increased with increase in oxygen concentration, which can cause autoignition of end gas. NOx emission decreased or kept almost constant with increase in oxygen concentration, which might be due to the shortened combustion duration.","PeriodicalId":341040,"journal":{"name":"Transactions of the JSME (in Japanese)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120956315","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

Load condition identification of a gymnastics horizontal bar apparatus using the tension balance of four cables 用四索张力平衡法确定体操单杠装置的载荷状态

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.21-00263

Kenya Ohtsuka, Yasushi Nigorikawa, Y. Aoki, Naoki Arakawa

{"title":"Load condition identification of a gymnastics horizontal bar apparatus using the tension balance of four cables","authors":"Kenya Ohtsuka, Yasushi Nigorikawa, Y. Aoki, Naoki Arakawa","doi":"10.1299/transjsme.21-00263","DOIUrl":"https://doi.org/10.1299/transjsme.21-00263","url":null,"abstract":"Gymnastics are diversifying skills and advanced with the development of the competition. Therefore, the guidance and scoring of gymnastics are also difficult. In recent years, various sports aimed at improving the performance of players from scientific perspectives are increasing. Even in the gymnastics competition, a player's skeleton is estimated from a number of points with three-dimensional coordinate data in measurement using Light Detection and Ranging(LiDAR), and the operation analysis of the player is conducted. They identify gymnastics skills as a scoring support system and serve to accuracy and fairness of scoring. However, they have not been evaluated how players deal with the apparatus. The grasping the size and direction of the force from the amount of deformation of the apparatus leads to the improvement of the skills. In addition, players are changing the gymnastic apparatus to their own preferences by adjusting the load of cables. From this, the load of cables is an important factor in load condition identification of the apparatus. In this research, we will use the load cell to measure the load of cables and consider whether the load of cables when the quasi-static load is applied is useful for load condition identification of the gymnastics horizontal bar apparatus.","PeriodicalId":341040,"journal":{"name":"Transactions of the JSME (in Japanese)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114102492","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

No-backlash control system by two-motor drive (The analysis and experiments on the influence of the viscous friction difference between the two motors) 双电机驱动无侧隙控制系统(两电机间粘性摩擦差影响的分析与实验)

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.22-00156

A. Maekawa, Kento Kokubo

引用次数: 0

Evaluation of the difference in gaze of expert and beginner in the phenomenon evaluation of fluid simulation 流体仿真现象评价中专家与初学者目光差异的评价

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/transjsme.22-00169

Taichi Maeda, K. Watanuki

引用次数: 0

Shape optimization analysis of adhesive interface under multiaxial stress state using failure function with stress invariants 基于应力不变量破坏函数的多轴应力状态下粘接界面形状优化分析

Transactions of the JSME (in Japanese) Pub Date : 1900-01-01 DOI: 10.1299/TRANSJSME.18-00409

Masato Iimori, Y. Shibutani, Hiro Tanaka, Yang Liu

{"title":"Shape optimization analysis of adhesive interface under multiaxial stress state using failure function with stress invariants","authors":"Masato Iimori, Y. Shibutani, Hiro Tanaka, Yang Liu","doi":"10.1299/TRANSJSME.18-00409","DOIUrl":"https://doi.org/10.1299/TRANSJSME.18-00409","url":null,"abstract":"The present paper proposes a shape optimization of the adhesive interface to improve the strength of adhesive structure under a multiaxial stress state. Its strength was evaluated by the failure function based on the first invariant of stress tensor I1 and the second invariant of deviatoric stress tensor J2, which has been discussed in the related previous paper. We defined a sum of squares of the failure function as an objective function in the optimization. Two types of the adhesive material properties, which put the major weights on only I1 and J2, respectively, were numerically examined. As a multi-material structure model bonded by the adhesive, a thin-walled butt-jointed cylinder was employed to avoid stress concentration at free edges in the adhesive layer. Three kinds of loadings were applied: only tension, only torsion, and a tension-torsion combined load. The shape of optimal adhesive layer according to each condition was in good agreement with the simplified theoretical solution. The kinked part of the optimal adhesive interface necessary for the pipe configuration was also reasonable to diminish the stress concentration around the corner. The obtained optimal shapes for the two typical adhesive material properties suggest that the present optimization method would be applicable dependent to the adhesive material parameters under multiaxial stress states.","PeriodicalId":341040,"journal":{"name":"Transactions of the JSME (in Japanese)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114786146","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