中文摘要：

编织增强体结构参数是影响复合材料力学性能的关键因素,而在环形编织中纱线间接触作用对编织增强体结构参数会产生影响。采用连续杆单元对柔性纱线进行建模,设定符合实际情况的边界条件及材料参数,对编织过程进行有限元仿真。通过实验验证理论分析和有限元仿真结果的有效性。对有限元仿真结果和实验结果对比分析,总结得出不同纱线摩擦系数、纱线张力、纱线接触点数量对编织增强体结构参数编织角影响规律：当纱线摩擦系数较大时,编织过程中纱线出现更明显偏移,编织增强体编织角小于理论设定值;当纱线所受张力增大时,编织增强体编织角更接近于理论设定值;编织过程中使用的纱线数量增多时,纱线接触点数量增多,彼此间相互接触作用影响增强,使编织角小于理论设定值。

英文摘要：

Structural parameter of knit reinforcement is a key factor influencing mechanical properties of composites.In circular knit,yarn interaction will influence structural parameter of knit reinforcement.Continuous rod unit was used to model flexible yearns.The boundary conditions and material parameters meeting actual conditions were set to carry out finite element simulation for the knitting process.Experiments were done to verify theoretical analysis and effectiveness of finite element simulation result.Through contrastive analysis of finite element simulation result and experimental results,the influence law of friction coefficient,yarn tension and the number of yearn contact points on knitting angle of structural parameter of knit reinforcement was concluded as follows：when friction coefficient of yearns is large,obvious excursion occurs in the knitting process,and the knitting angle of knit reinforcement is less than the theoretical value;when yearn tension increases,the knitting angle of knit reinforcement is closer to the theoretical value;when the quantity of yearns increases in the knitting process,the number of yearn contact points rises,and interaction effect is ehanced so that the knitting angle is less than the theoretical value.