针织轴向织物面内拉伸性能理论研究进展  

Theoretical Research Progress in the In-plane Uniaxial Tensile Properties of the Directionally Oriented Knitted Fabric

作　　者：董赵勇 姜亚明[1,2] 齐业雄[1,2] Dong Zhaoyong;Jiang Yaming;Qi Yexiong(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composite of Ministry of Education,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学先进纺织复合材料教育部重点实验室,天津300387

出　　处：《针织工业》2024年第1期7-12,共6页Knitting Industries

摘　　要：采用宏观几何结构处理针织轴向织物拉伸变形,并建立单轴拉伸模型。结合拉伸模型计算单根衬纱在任何角度的拉伸应变。然而,单根衬纱理论计算应变存在误差。推导针织轴向织物在单轴拉伸中单纱应变理论计算值与实际值之间误差,并获得误差的Open M-shaped Curved Surface。根据误差规律,拟合误差公式,实现单根衬纱理论计算应变的修正。该修正方程可对织物应变范围在0~50%内的单根衬纱进行任意角度的修正。此修正公式比理论计算公式具有更大的使用范围和更准确的计算结果。选取角度为±30°、±45°、±60°和±75°的单根衬纱进行修正方程验证,结果显示修正效果良好。因此,修正后方程可代替单根衬纱应变实际值。该研究对针织轴向织物及复合材料开发和力学研究具有重要意义。This paper reviews a simplified method for dealing with deformation using the macroscopic structure of the directionally oriented knitted fabric,from which a uniaxial tensile model is established.Accordingly,the tensile strain of single inserting yarn at any angle can be calculated.However,there are errors in the theoretical calculated strain.As a result,the error between the theoretical calculated and actual values of single inserting yarn strain of the directionally oriented knitted fabric under the uniaxial stretching process is calculated,and the “open M-shaped curved surface” of error is obtained theoretically.Based on the law of errors,the error formula is fitted and the correction of the theoretical calculated strain of single inserting yarn is successfully achieved.The correction equation can correct the inserting yarn at any angle in the fabric strain range of 0 ~50%,which has a larger using range and more accurate results than the theoretical calculated formula for inserting yarn.And the validation is carried out with bias inserting yarn at ±30°,±45°,±60° and ±75° angles and the results are very good.Therefore,the corrected equation can replace the actual value of bias inserting yarn strain.Therefore,it is of great significance for the development of the directionally oriented knitted fabric.

关 键 词：形变 织物应变 单向拉伸 单根衬纱 误差 修正方程 

分 类 号：TS186.1[轻工技术与工程—纺织材料与纺织品设计]