Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)最新文献_第10页

Motion of Flexible Fibers in a Newtonian Flow: Evolution of Configuration of Multiple Fibers and Flow Kinematics in a Simple Shear Flow 牛顿流中柔性纤维的运动:简单剪切流中多纤维构型的演化与流动运动学

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-06-25 DOI: 10.4188/TRANSJTMSJ.56.11_T95

Kousuke Sugimoto, N. Mori, K. Chiba

{"title":"Motion of Flexible Fibers in a Newtonian Flow: Evolution of Configuration of Multiple Fibers and Flow Kinematics in a Simple Shear Flow","authors":"Kousuke Sugimoto, N. Mori, K. Chiba","doi":"10.4188/TRANSJTMSJ.56.11_T95","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.56.11_T95","url":null,"abstract":"The objective of this study is to well understand the interaction between the configuration of flexible fibers and flow kinematics in fiber suspension flows. In this framework, the evolution of the configuration of a single fiber in a simple shear flow at low Reynolds number was numerically analyzed on the basis of an 'immersed boundary method' developed by Peskin. In the computations fibers with force-free configuration of being straight were used. While deformation of a fiber is fundamentally three-dimensional, stretching/compression and bending deformations in the plane of flow were simply assumed.In Part 2 of the series of papers, the effects of fluid viscosity and shear rate on the evolution of the configuration of a single fiber and flow kinematics were described. The behavior of a fiber becomes more complex as the fluid viscosity increases. Furthermore, it was confirmed that a flow-induced bending parameter, which is a function of fiber length, bending stiffness, fluid viscosity and shear rate, is a useful dimensionless parameter for classification of rotation of an elastic fiber, such as rigid rotation, springy rotation, S-turn, snake turn and complex rotation.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126009759","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

Ratio of Outflow Rate of Viscoelastic Fluids through a Branching Channel 粘弹性流体通过分支通道的流出速率比

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-05-25 DOI: 10.4188/TRANSJTMSJ.54.5_T83

Satoru Tanaka, Takehiro Yamamoto, K. Nakamura

引用次数: 0

Numerical Analysis of Viscoelastic Welding Flow 粘弹性焊接流动的数值分析

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-05-25 DOI: 10.4188/TRANSJTMSJ.54.5_T89

M. Mitsuhashi, K. Nishimura, K. Nomura, Takehiro Yamamoto, N. Mori, K. Nakamura

{"title":"Numerical Analysis of Viscoelastic Welding Flow","authors":"M. Mitsuhashi, K. Nishimura, K. Nomura, Takehiro Yamamoto, N. Mori, K. Nakamura","doi":"10.4188/TRANSJTMSJ.54.5_T89","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.54.5_T89","url":null,"abstract":"In the polymer processing, weld-lines often occur and cause the degradation of the mechanical and optical properties of products. These properties are degraded when the polymer molecules near the weld-line highly orient owing to the elongational flow and the orientation is fixed by solidification of the polymer melts before it returns to a random condition. In the present paper, the viscoelastic welding flow was numerically calculated for analyzing the molecular orientation in the weld-line region. The numerical simulation of the flow around a spider supporting a mandrel was carried out using the single-mode Giesekus model as a constitutive equation. The effects of the spider shape and viscoelastic properties of polymer melts on the anisotropy of the molecular orientation at the weld-line were analyzed. The calculation was carried out for three spider shapes, i.e. the spider-rear-end-angleθ2=30°, 45°, and 60°, The numerical results showed a simple modification of θ2suppressed the elongational rate, the stress, and the maximum value of the degree of the molecular orientation near the spider rear end, where the weld-line occurred. When the Weissenberg number is large and the influence of shear-thinning is great, the maximum value of the elongational rate was sensitive to θ2Especially at large Weissenberg number (=2.4), the elongational stress was reduced more effectively using the spider of the case that θ2=60°.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127980650","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

Effects of Support Pantyhose with Loop Length Controlled in the Course Direction on the Swelling of Lower Legs, Fatigue and Comfort 沿程方向控制环长支撑连裤袜对小腿肿胀、疲劳及舒适性的影响

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-04-25 DOI: 10.4188/TRANSJTMSJ.54.4_T65

Miyuki Nakahashi, Harumi Morooka, C. Nakajima, Seizo Satoh, H. Morooka

{"title":"Effects of Support Pantyhose with Loop Length Controlled in the Course Direction on the Swelling of Lower Legs, Fatigue and Comfort","authors":"Miyuki Nakahashi, Harumi Morooka, C. Nakajima, Seizo Satoh, H. Morooka","doi":"10.4188/TRANSJTMSJ.54.4_T65","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.54.4_T65","url":null,"abstract":"This paper aims to clarify wear performance of trial support pantyhose of which front pressure was lower by being controlled loop length in course direction.Experiments for examining effects of trial pantyhose on swelling of lower legs, fatigue (Reaction time (RI), Flicker value (FV)), compressive feeling and comfort were made.As subjects, thirty-three women working in a department store were employed.The results obtained were as follows : 1) When the mean clothing pressure of pantyhose is higher, the swelling of lower legs (Sw) became smaller significantly.In a case of Sw>0, the trial pantyhose were more effective than the pantyhose on the market.2) Increase in RT of three kinds of pantyhose after work was smaller significantly than that of a pantyhose with the lowest clothing pressure in all samples used.There was no significant difference in FV.3) Score of compressive feeling of trial pantyhose was lower than that of the pantyhose on the market.4) Compressive comfort of the trial pantyhose knitted in single covered yam was almost independed on the preference of the clothing pressure.","PeriodicalId":339262,"journal":{"name":"Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123333855","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

Decision Support Systems for the Textiles & Clothing Industry 纺织和服装行业决策支持系统

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-04-25 DOI: 10.4188/TRANSJTMSJ.54.4_153

G. Taylor, Szeto Ys

引用次数: 0

Pattern Design Using 3D Software-A Case of Technology Transfer in Hong Kong. 利用三维软件进行图案设计——香港的技术转移案例。

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-03-25 DOI: 10.4188/TRANSJTMSJ.54.3_114

G. Taylor, A. Kung, E. Cheng, C. Chow, V. Leung, S. Yung

引用次数: 0

Measurement of Drape Coefficients of Fabrics and Description of Those Hanging Shapes 织物悬垂系数的测定及悬垂形状的描述

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-03-25 DOI: 10.4188/TRANSJTMSJ.54.3_T57

Minzhuang Yang, Li Qin, M. Matsudaira

引用次数: 18

Enzymatic Degradation of cellulosic Fibers by Trichoderma Reesei Cellulase 里氏木霉纤维素酶降解纤维素纤维的研究

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-03-25 DOI: 10.4188/TRANSJTMSJ.54.3_T50

Chiyomi Mizutani, Rousselle Marie-Alice

引用次数: 1

Effects of Clothing Pressure Exerted on a Trunk on Heart Rate, Blood Pressure, Skin Blood Flow and Respiratory Function 衣服压在躯干上对心率、血压、皮肤血流量和呼吸功能的影响

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-02-25 DOI: 10.4188/TRANSJTMSJ.54.2_57

Harumi Morooka, Miyuki Nakahashi, H. Morooka, K. Kitamura

引用次数: 20

Recent Developments of Synthetic Speciality Fiber 合成特种纤维的新进展

Sen'i Kikai Gakkaishi (journal of The Textile Machinery Society of Japan) Pub Date : 2001-02-25 DOI: 10.4188/TRANSJTMSJ.54.2_3

T. Harada, Seishu Hayashi, H. Katsuma

引用次数: 0