关键词: 纬编针织物, 弹簧-质点, 线圈模型, 三维仿真, 线圈变形

Abstract: With the advancement of computer-aided design technology, the diversity of weft-knitted CAD systems is increasing, providing efficient and convenient design solutions. Simultaneously, research on three-dimensional simulations of weft-knitted fabrics is flourishing, focusing on different types of weft-knitted fabric structures. This study aims to explore a mechanics-based method to enhance the three-dimensional simulation of single-faced weft-knitted fabrics, particularly in simulating deformations under various structural organizations. By constructing coil-based nodal point models and spring-mass particle models, the research aims to achieve precise three-dimensional simulations of different types of weft-knitted fabrics.
Regarding the research methodology, this study builds upon existing research by creating a coil mesh model to ensure a specific proportion between the coordinates of coil-based nodal points and mesh points, thereby achieving an ideal-state three-dimensional simulation of weft-knitted fabrics. Subsequently, by combining a spring-mass particle model with Newton's second law and Hooke's law, the study uses the Velocity-Verlet numerical integration method to calculate the forces and displacements of different particles at different times. Finally, by measuring deformation data of fabrics with different organizations, the study analyzes the force situations of each coil type and successfully accomplishes the deformation simulation of three fabric types. The research results indicate that by constructing a coil mesh model and employing a spring-mass particle model, this study successfully analyzes the force characteristics of coils in single-faced weft-knitted variable-structure fabrics. The proposed method has achieved the three-dimensional simulation of various types of single-faced weft-knitted fabrics and validated the feasibility of the simulation results through comparisons with physical samples. This method is not only suitable for introducing single loop and floating loop structures but also applicable for simulating deformations of single-faced weft-knitted fabrics with different structural organizations. This advancement makes fabric simulation more realistic, opening up new research directions in the field of three-dimensional simulation of weft-knitted fabrics.
In conclusion, the method proposed in this study brings new possibilities to the three-dimensional simulation technology of weft-knitted fabrics, deepening the understanding of the force relationships and deformation patterns of single-faced weft-knitted variable-structure fabrics. However, in future research, especially in investigating the force mechanisms of double-faced fabrics, Z-direction force factors should be comprehensively considered to further enhance the applicability and accuracy of this method.

Key words: weft-knitted fabric, spring-mass particles, coil model, three-dimensional simulation, coil deformation