Flexible Rope Simulation Based on Improved Mass-Spring Mode

In a virtual hoistin training system, to address the issues of real-time and fidelity in flexible rope simulation, a novel cellular mass-spring model was proposed. According to the characteristics of slenderness and flexibility of rope, the square grid mass-spring model is refined into cellular mass-spring model and every part of the rope has uniform mass distribution. The model is composed of multi-group hexagonal columns, and four types of spring are used for the simulation of internal deformation such as bending, torsion and tension. In order to improve the efficiency and precision, the method of verlet-trapezoid-predictor-corrector is proposed on numeric computation. The simulation results verify the feasibility of such a mass-spring model, and the results of numeric computation show that the verlet-trapezoid-predictor-corrector is more efficient and accurate than the others.