基于改进弹簧-质点模型的纬编织物三维模拟

3-D simulation of weft knitted fabric based on improved mass-spring model

为解决弹簧-质点模型在模拟组织结构复杂的纬编织物时模拟效果不真实、立体感不足等问题,对传统弹簧-质点模型进行改进,提出了立体化的弹簧-质点模型。改进的弹簧-质点模型能够很好地模拟组织结构较复杂的纬编织物,通过非线性的弹簧力模拟织物动态仿真中出现的超弹性现象。同时,采用Velocity-Verlet数值积分方法对质点的空间位移进行计算,实现了对纬编织物受到三维状态多外力作用时的动态模拟。所提方法计算速度快,实时性好。

In order to solve the problem in simulating of the complicated organization of weft knitted fabric and lack sense of reality, mass-spring model was improved and three-dimensional mass-spring model was proposed. The complicated organization of weft-knitted fabric could be well simulated via the improved mass-spring model. The phenomenon of super-elastic in fabric dynamic simulation was also solved by non-linear spring force. The spatial displacement of particles was calculated using Velocity- Verlet numerical integration to realize the 3-D dynamic showed its advantages on computing speed and real-time simulation of weft knitted fabric. The algorithm performance.