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Article
Publication date: 1 February 2004

J. Geršak

Garment is presumably the only product where, in the tailoring process, a two‐dimensional fabric is converted into a three‐dimensional shape without indirect physical remodelling…

Abstract

Garment is presumably the only product where, in the tailoring process, a two‐dimensional fabric is converted into a three‐dimensional shape without indirect physical remodelling of the material. Such a remodelling is directly associated with the physical behaviour of fabric structure, which can be treated as a very complex system owing to its constructional properties. Fabrics are non‐homogeneous and anisotropic materials. Very small stresses on textile materials cause extremely large strains, so that the deformations occurring are highly non‐linear. Non‐linear properties of textile materials and thus, connected deformations at low stresses are closely related to the elastic potential and influence fabric draping and fitting of the garment manufactured. For this purpose, the relationship between fabric elastic potential, as an important property under lower tensile load, and garment appearance quality, will be investigated. The investigation is subdivided into two parts. The first part presents the study of relationship between the elastic potential and particular mechanical properties of fabrics, whereas the second part of the investigation is concerned with studying the influence of fabric elastic potential on the drapeability, respectively, appearance quality of the garment manufactured.

Details

International Journal of Clothing Science and Technology, vol. 16 no. 1/2
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 1 January 1992

ZHI‐HUA ZHONG and JAROSLAV MACKERLE

Contact problems are among the most difficult ones in mechanics. Due to its practical importance, the problem has been receiving extensive research work over the years. The finite…

Abstract

Contact problems are among the most difficult ones in mechanics. Due to its practical importance, the problem has been receiving extensive research work over the years. The finite element method has been widely used to solve contact problems with various grades of complexity. Great progress has been made on both theoretical studies and engineering applications. This paper reviews some of the main developments in contact theories and finite element solution techniques for static contact problems. Classical and variational formulations of the problem are first given and then finite element solution techniques are reviewed. Available constraint methods, friction laws and contact searching algorithms are also briefly described. At the end of the paper, a bibliography is included, listing about seven hundred papers which are related to static contact problems and have been published in various journals and conference proceedings from 1976.

Details

Engineering Computations, vol. 9 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 1 October 1954

J.H. Argyris

This paper presents the generalized theory of the most important energy principles in structural analysis. All derive from two basic complementary theorems denoted as the…

Abstract

This paper presents the generalized theory of the most important energy principles in structural analysis. All derive from two basic complementary theorems denoted as the principles of virtual displacements and virtual forces. Both exact and approximate methods are discussed and particular attention is paid to the derivation of upper and lower limits. The theory is not restricted to linearly elastic bodies but includes ab initio the effect of non‐linear stress‐strain laws and thermal strains. Finally the basic principles are illustrated on a number of simple examples in preparation for the more complex ones to appear in Parts II and III.

Details

Aircraft Engineering and Aerospace Technology, vol. 26 no. 10
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 21 January 2022

Jie Li, Chenyang Yin, Yunde Shi, Suya Dai and Xingsong Wang

Periodic inspection of bridge cables is essential, and cable-climbing robots can replace human workers to perform risky tasks and improve inspection efficiency. However, cable…

Abstract

Purpose

Periodic inspection of bridge cables is essential, and cable-climbing robots can replace human workers to perform risky tasks and improve inspection efficiency. However, cable inspection robots often fail to surmount large obstacles and cable clamps. The purpose of this paper is to develop a practical cable inspection robot with stronger obstacle-surmounting performance and circumferential rotation capability.

Design/methodology/approa/ch

A cable inspection robot with novel elastic suspension mechanisms and circumferential rotation mechanisms is designed and proposed in this study. The supporting force and spring deformation of the elastic suspension are investigated and calculated. Dynamic analysis of obstacle surmounting and circumferential rotation is performed. Experiments are conducted on vertical and inclined cables to test the obstacle-surmounting performance and cable-clamp passing of the robot. The practicality of the robot is then verified in field tests.

Findings

With its elastic suspension mechanisms, the cable inspection robot can carry a 12.4 kg payload and stably climb a vertical cable. The maximum heights of obstacles surmounted by the driving wheels and the passive wheels of the robot are 15 mm and 13 mm, respectively. Equipped with circumferential rotation mechanisms, the robot can flexibly rotate and successfully pass cable clamps.

Originality/value

The novel elastic suspension mechanism and circumferential rotation mechanism improve the performance of the cable inspection robot and solve the problem of surmounting obstacles and cable clamps. Application of the robot can promote the automation of bridge cable inspection.

Details

Industrial Robot: the international journal of robotics research and application, vol. 49 no. 5
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 1 November 2006

George K. Stylios

Examines the twelfth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects…

1097

Abstract

Examines the twelfth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.

Details

International Journal of Clothing Science and Technology, vol. 18 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 20 November 2007

George K. Stylios

Examines the thirteenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects…

1551

Abstract

Examines the thirteenth published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.

Details

International Journal of Clothing Science and Technology, vol. 19 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 1 December 2005

George K. Stylios

Examines the eleventh published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects…

1024

Abstract

Examines the eleventh published year of the ITCRR. Runs the whole gamut of textile innovation, research and testing, some of which investigates hitherto untouched aspects. Subjects discussed include cotton fabric processing, asbestos substitutes, textile adjuncts to cardiovascular surgery, wet textile processes, hand evaluation, nanotechnology, thermoplastic composites, robotic ironing, protective clothing (agricultural and industrial), ecological aspects of fibre properties – to name but a few! There would appear to be no limit to the future potential for textile applications.

Details

International Journal of Clothing Science and Technology, vol. 17 no. 6
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 4 November 2019

Hongwang Du, Wei Xiong, Haitao Wang and Zuwen Wang

Cables are widely used, and they play a key role in complex electromechanical products such as vehicles, ships, aircraft and satellites. Cable design and assembly significantly…

Abstract

Purpose

Cables are widely used, and they play a key role in complex electromechanical products such as vehicles, ships, aircraft and satellites. Cable design and assembly significantly impact the development cycle and assembly quality, which is be-coming a key element affecting the function of a product. However, there are various kinds of cables, with complex geo-metric configurations and a narrow assembly space, which can easily result in improper or missed assembly, an unreasonable layout or interference. Traditional serial design methods are inefficient and costly, and they cannot predict problems in installation and use. Based on physical modeling, computer-aided cable design and assembly can effectively solve these problems. This paper aims to address virtual assembly (VA) of flexible cables based on physical modeling.

Design/methodology/approach

Much research has focused recently on virtual design and assembly-process planning for cables. This paper systematically reviews the research progress and the current state of mechanical models, virtual design, assembly-process planning, collision detection and geometric configuration and proposes areas for further research.

Findings

In the first instance, the main research groups and typical systems are investigated, followed by extensive exploration of the major research issues. The latter can be reviewed from five perspectives: the current state of mechanical models, virtual design, assembly-process planning, collision detection and geometric configuration. Finally, the barriers that prevent successful application of VA are also discussed, and the future research directions are summarized.

Originality/value

This paper presents a comprehensive survey of the topics of VA of flexible cables based on physical modeling and investigates some new ideas and recent advances in the area.

Details

Assembly Automation, vol. 40 no. 2
Type: Research Article
ISSN: 0144-5154

Keywords

Article
Publication date: 28 September 2021

Yao Lu, Dejian Li, Kai Wang and Zhen Li

Over-limit transportation has the characteristics of large axle load, large number of axles and lateral distribution width. Under the action of over-limit load, the coupling…

150

Abstract

Purpose

Over-limit transportation has the characteristics of large axle load, large number of axles and lateral distribution width. Under the action of over-limit load, the coupling vibration effect of vehicle–bridge is more obvious, and the deformation of bridge components is large. Thus, research and analysis of the vehicle–bridge coupling dynamic response of long-span bridges under over-limit transportation has practical engineering significance.

Design/methodology/approach

Based on the principle of invariable elastic potential energy, this paper derives dynamic model of over-limit transportation n-axis flat vehicle. The numerical simulation method is used to model and calculate a cable-stayed bridge, and the static effect of the cable-stayed bridge and the dynamic response of vehicle–bridge coupling under different parameters are compared and analyzed.

Findings

The focus is on the influence of vehicle load and vehicle velocity parameters on the stress and amplitude of different cables under over-limit transportation, and the corresponding variation law is obtained.

Originality/value

The research on the coupled dynamic response of cable-stayed bridges has attracted the attention of many scholars, but there are relatively few studies on the coupled vibration of out-limit vehicles and bridges. In this paper, based on finite element software, a vehicle–bridge coupling model under bulk transportation is established.

Details

International Journal of Structural Integrity, vol. 12 no. 5
Type: Research Article
ISSN: 1757-9864

Keywords

Article
Publication date: 10 August 2010

Takako Inoue and Masako Niwa

Japanese traditional Chirimen fabrics are used for making kimonos, which have a fixed structure and are worn in very particular ways. These fabrics have also been used as dress…

Abstract

Purpose

Japanese traditional Chirimen fabrics are used for making kimonos, which have a fixed structure and are worn in very particular ways. These fabrics have also been used as dress fabrics in recent years. The purpose of this paper is to investigate the characteristics of the mechanical properties of various types of Chirimen to clarify differences in their hand value (HV) and clothing appearance.

Design/methodology/approach

Chirimen fabrics were collected from the largest producing area, the Tango district, plus silk Chirimen and 40 polyester Chirimen samples, resulting in a total of 311 samples. The mechanical properties, HVs, and formability of Chirimen fabrics used for kimono fabrics were compared to those of Western fabrics, and their unique features were clarified.

Findings

Values of the weft direction of bending properties of all Chirimen groups, men and women's suit fabrics, and dress shirt fabrics were at the same level. A significant feature of the mechanical parameters of each Chirimen group (excluding logSP which are compound values of bending properties and shearing properties) was that they were in the range for ideal men's suiting zone. HV KOSHI of Chirimen is found to be closely related to the bending properties, thickness and weight of the fabric, and HV TEKASA of Chirimen is found to be closely related to the thickness and weight of the fabric.

Originality/value

This paper clarifies Chirimen's mechanical properties which contribute to traditional subjective evaluation by fabric experts.

Details

International Journal of Clothing Science and Technology, vol. 22 no. 4
Type: Research Article
ISSN: 0955-6222

Keywords

1 – 10 of over 5000