多梳贾卡织物结构形变研究与计算机仿真
|
摘要
为实现多梳贾卡织物的形变模拟,尤其是提花地网中不同大小网眼对织物形变的模拟,建立了适用于多梳贾卡经编织物的质点弹簧模型。通过研究多梳贾卡织物的组织结构和贾卡提花原理,将地梳线圈简化为质点,连接线圈之间的延展线简化为弹簧,并进一步将地梳、氨纶梳和衬纬贾卡梳、花梳形成的组织简化为纵向结构弹簧、卷曲弹簧、横向结构弹簧和约束弹簧;研究了线圈质点在4种弹簧复合作用下的受力,引入弹簧阻尼力以减小质点弹簧系统的振动;采用显式欧拉方法求解任意时刻质点的运动状态来减少线圈形变模拟过程的计算时间;通过实样举例,将形变模拟的预测效果与上机编织样布进行对比,验证了所建质点弹簧模型的正确性和实用性。
Deformation,caused by various jacquard meshes,is the key core of simulation for multi-bar jacquard fabrics. To perfect its deformation simulation,a tailored mass-spring model is built in agreement with structure features and jacquard theory. With this model,ground pillars are referred to as particles,while underlap between two courses is referred to as a longitudinal structural spring. Similarly,spandex inlay is referred to as coil spring,jacquard inlay as transverse structural spring and pattern lapping as restriction spring. Resultant force on particles by these four springs is calculated to analyze motion state and simulate deformation with explicit Euler method. Finally,simulated deformation based on the massspring model is proved accurate when compared with real samples.
Deformation,caused by various jacquard meshes,is the key core of simulation for multi-bar jacquard fabrics. To perfect its deformation simulation,a tailored mass-spring model is built in agreement with structure features and jacquard theory. With this model,ground pillars are referred to as particles,while underlap between two courses is referred to as a longitudinal structural spring. Similarly,spandex inlay is referred to as coil spring,jacquard inlay as transverse structural spring and pattern lapping as restriction spring. Resultant force on particles by these four springs is calculated to analyze motion state and simulate deformation with explicit Euler method. Finally,simulated deformation based on the massspring model is proved accurate when compared with real samples.
引文
[1]顾沁婷,李艳梅,刘翔.基于质点弹簧模型的织物形象化仿真技术与展望[J].纺织学报,2013,34(3):147-153.GU Qinting,LI Yanmei,LIU Xiang.Visualization simulation technology of cloth deformation based on mass-spring model and its prospect[J].Journal of Textile Research,2013,34(3):147-153.
[2]ZHANG Jiahua,GEORGE Baciu,JUSTIN Cameron.Particle pair system:an interlaced mass-spring system for real-time woven fabric simulation[J].Textile Research Journal,2012,82(7):655-666.
[3]雷惠,丛洪莲,张爱军,等.基于质点模型的横编织物结构研究与计算机模拟[J].纺织学报,2015,36(2):43-48.LEI Hui,CONG Honglian,ZHANG Aijun,et al.Research of flat knitted structure and compute simulationbased on particle model[J].Journal of Textile Research,2015,36(2):43-48.
[4]刘卉,陈纯,施伯乐.基于改进的弹簧-质点模型的三维服装模拟[J].软件学报,2003,14(3):619-627.LIU Hui,CHEN Chun,SHI Baile.Simulation of 3-D garment based on improved spring-mass model[J].Journal of Software,2003,14(3):619-627.
[5]惠卫华,关正西.基于质点-弹簧模型的布料仿真研究[J].计算机工程与设计,2007,28(3):664-667.HUI Weihua,GUAN Zhengxi.Research on cloth modelting simulation based on mass spring model[J].Computer Engineering and Design,2007,28(3):664-667.
[6]邓文,王田田,邓中民.弹簧质点模型用于经编贾卡织物仿真[J].武汉纺织大学学报,2011,24(3):74-78.DENG Wen,WANG Tiantian,DENG Zhongmin.Simulation of warp-knitted jacquard fabrics based on mass-spring model[J].Journal of Wuhan Textile University,2011,24(3):74-78.
[7]蒋高明.经编针织物生产技术[M].北京:中国纺织出版社,2010:343.JIANG Gaoming.Production Technology of WarpKnitted Fabric[M].Beijing:China Textile&Apparel Press,2010:343.
[8]沙莎,蒋高明,马丕波,等.基于改进弹簧-质点模型的纬编织物三维模拟[J].纺织学报,2015,36(2):111-115.SHA Sha,JIANG Gaoming,MA Pibo,et al.3-D simulation of weft knitted fabric based on improved mass spring model[J].Journal of Textile Research,2015,36(2):111-115.
[9]王志斌,刘检华,刘佳顺,等.面向电缆虚拟装配仿真的多分支弹簧质点模型[J].机械工程学报,2014,50(3):174-183.WANG Zhibin,LIU Jianhua,LIU Jiashun,et al.A multi-branch mass-spring model for virtual assembly of cable harness[J].Journal of Mechnical Engineering,2014,50(3):174-183.
[10]孔川,罗大庸.利用弹簧质点模型和隐式方法的布料模拟研究[J].计算机工程与应用,2011,47(9):225-227.KONG Chuan,LUO Dayong.Research of cloth simulation using mass-spring and implicit method[J].Computer Engineering and Applications,2011,47(9):225-227.
[2]ZHANG Jiahua,GEORGE Baciu,JUSTIN Cameron.Particle pair system:an interlaced mass-spring system for real-time woven fabric simulation[J].Textile Research Journal,2012,82(7):655-666.
[3]雷惠,丛洪莲,张爱军,等.基于质点模型的横编织物结构研究与计算机模拟[J].纺织学报,2015,36(2):43-48.LEI Hui,CONG Honglian,ZHANG Aijun,et al.Research of flat knitted structure and compute simulationbased on particle model[J].Journal of Textile Research,2015,36(2):43-48.
[4]刘卉,陈纯,施伯乐.基于改进的弹簧-质点模型的三维服装模拟[J].软件学报,2003,14(3):619-627.LIU Hui,CHEN Chun,SHI Baile.Simulation of 3-D garment based on improved spring-mass model[J].Journal of Software,2003,14(3):619-627.
[5]惠卫华,关正西.基于质点-弹簧模型的布料仿真研究[J].计算机工程与设计,2007,28(3):664-667.HUI Weihua,GUAN Zhengxi.Research on cloth modelting simulation based on mass spring model[J].Computer Engineering and Design,2007,28(3):664-667.
[6]邓文,王田田,邓中民.弹簧质点模型用于经编贾卡织物仿真[J].武汉纺织大学学报,2011,24(3):74-78.DENG Wen,WANG Tiantian,DENG Zhongmin.Simulation of warp-knitted jacquard fabrics based on mass-spring model[J].Journal of Wuhan Textile University,2011,24(3):74-78.
[7]蒋高明.经编针织物生产技术[M].北京:中国纺织出版社,2010:343.JIANG Gaoming.Production Technology of WarpKnitted Fabric[M].Beijing:China Textile&Apparel Press,2010:343.
[8]沙莎,蒋高明,马丕波,等.基于改进弹簧-质点模型的纬编织物三维模拟[J].纺织学报,2015,36(2):111-115.SHA Sha,JIANG Gaoming,MA Pibo,et al.3-D simulation of weft knitted fabric based on improved mass spring model[J].Journal of Textile Research,2015,36(2):111-115.
[9]王志斌,刘检华,刘佳顺,等.面向电缆虚拟装配仿真的多分支弹簧质点模型[J].机械工程学报,2014,50(3):174-183.WANG Zhibin,LIU Jianhua,LIU Jiashun,et al.A multi-branch mass-spring model for virtual assembly of cable harness[J].Journal of Mechnical Engineering,2014,50(3):174-183.
[10]孔川,罗大庸.利用弹簧质点模型和隐式方法的布料模拟研究[J].计算机工程与应用,2011,47(9):225-227.KONG Chuan,LUO Dayong.Research of cloth simulation using mass-spring and implicit method[J].Computer Engineering and Applications,2011,47(9):225-227.