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Algorithm for Automatic Generation of Curved and Compound Twills
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作者 王梅珍 王府梅 王善元 《Journal of Donghua University(English Edition)》 EI CAS 2005年第2期19-22,共4页
A new arithmetic using matrix left-shift functions for the quicker generation of curved and compound twills is introduced in this paper. A matrix model for the generation of regular, curved and compound twill structur... A new arithmetic using matrix left-shift functions for the quicker generation of curved and compound twills is introduced in this paper. A matrix model for the generation of regular, curved and compound twill structures is established and its computing simulation realization are elaborated. Examples of the algorithm applying in the simulation and the automatic generation of curved and compound twills in fabric CAD are obtained. 展开更多
关键词 curved twill compound twill fabric weave ARITHMETIC fabric simulation
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Woven fabric triboelectric nanogenerators for human-computer interaction and physical health monitoring
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作者 Yu Miao Mengjuan Zhou +7 位作者 Jia Yi Yanyan Wang Guangjin Tian Hongxia Zhang Wenlong Huang Wenhao Wang Ronghui Wu Liyun Ma 《Nano Research》 SCIE EI CSCD 2024年第6期5540-5548,共9页
Triboelectric nanogenerator(TENG)converts mechanical energy into valuable electrical energy,offering a solution for future energy needs.As an indispensable part of TENG,textile TENG(T-TENG)has incredible advantages in... Triboelectric nanogenerator(TENG)converts mechanical energy into valuable electrical energy,offering a solution for future energy needs.As an indispensable part of TENG,textile TENG(T-TENG)has incredible advantages in harvesting biomechanical energy and physiological signal monitoring.However,the application of T-TENG is restricted,partly because the fabric structure parameter and structure on T-TENG performance have not been fully exploited.This study comprehensively investigates the effect of weaving structure on fabric TENGs(F-TENGs)for direct-weaving yarn TENGs and post-coating fabric TENGs.For direct-weaving F-TENGs,a single-yarn TENG(Y-TENG)with a core-sheath structure is fabricated using conductive yarn as the core layer yarn and polytetrafluoroethylene(PTFE)filaments as the sheath yarn.Twelve fabrics with five different sets of parameters were designed and investigated.For post-coating F-TENGs,fabrics with weaving structures of plain,twill,satin,and reinforced twill were fabricated and coated with conductive silver paint.Overall,the twill F-TENGs have the best electrical outputs,followed by the satin F-TENGs and plain weave F-TENGs.Besides,the increase of the Y-TENG gap spacing was demonstrated to improve the electrical output performance.Moreover,T-TENGs are demonstrated for human-computer interaction and self-powered real-time monitoring.This systematic work provides guidance for the future T-TENG’s design. 展开更多
关键词 single-yarn triboelectric nanogenerators woven fabric triboelectric nanogenerators fabric weaving structures and parameters human-computer interaction physical health monitoring
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Analytical Solutions for Predicting Tensile and Shear Moduli of Triaxial Weave Fabric Composites 被引量:6
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作者 Jiangbo Bai Junjiang Xiong +1 位作者 Meng Liu Ziyu Man 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2016年第1期59-77,共19页
Novel micromechanical curved beam models were presented for predicting the ten- sile and shear moduli of triaxial weave fabric (TWF) composites by considering the interactions between the triaxial yarns of 0° a... Novel micromechanical curved beam models were presented for predicting the ten- sile and shear moduli of triaxial weave fabric (TWF) composites by considering the interactions between the triaxial yarns of 0° and ±60° The triaxial yarns in micromechanieal representative unit cell (RUC) were idealized as curved beams with a path depicted using the sinusoidal shape functions, and the tensile and shear moduli of TWF composites were derived by means of the strain energy approach founded on micromechanics. In order to validate the new models, the predictions were compared with the experimental data from literature. It was shown that the predictions from the new model agree well with the experimental results. Using these models, the tensile and shear properties of TWF composites could be predicted based only on the properties of basic woven fabric. 展开更多
关键词 triaxial weave fabric (TWF) COMPOSITE elastic properties tension modulus shearmodulus
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Analytical Solution for Predicting In-plane Elastic Shear Properties of 2D Orthogonal PWF Composites 被引量:2
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作者 CHENG Xu XIONG Junjiang BAI Jiangbo 《Chinese Journal of Aeronautics》 SCIE EI CSCD 2012年第4期575-583,共9页
This paper proposes a new analytical solution to predict the shear modulus of a two-dimensional(2D) plain weave fabric(PWF) composite accounting for the interaction of orthogonal interlacing strands with coupled s... This paper proposes a new analytical solution to predict the shear modulus of a two-dimensional(2D) plain weave fabric(PWF) composite accounting for the interaction of orthogonal interlacing strands with coupled shear deformation modes including not only relative bending but also torsion,etc.The two orthogonal yarns in a micromechanical unit cell are idealized as curved beams with a path depicted by using sinusoidal shape functions.The internal forces and macroscopic deformations carried by the yarn families,together with macroscopic shear modulus of PWFs are derived by means of a strain energy approach founded on micromechanics.Three sets of experimental data pertinent to three kinds of 2D orthogonal PWF composites have been implemented to validate the new model.The calculations from the new model are also compared with those by using two models in the earlier literature.It is shown that the experimental results correlate well with predictions from the new model. 展开更多
关键词 textile composites mechanical properties shear modulus properties plain weave fabric
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