Research And Implementation Of 3D Cloth Simulation Technology For Garment Deformation

With the continuous development of computer software and hardware technology,computer network has become an indispensable part of people's daily life,especially in whose field,the virtual simulation technology based on computer network has gradually become the mainstream direction of research.In the field of virtual simulation,computer-aided design and clothing simulation based on e-commerce has become an increasingly important research direction.Nowadays,as the computer network has become increasingly powerful,users' requirements of fabric simulation in the virtual reality has also become increasingly high,and it has higher demand for the authenticity and the real-time peculiarity of the garment simulation.However,the current simulation technology is not enough to meet the higher requirements,as well for many aspects of the authenticity of the simulation,the effects of modeling has not yet reached the ideal state.The paper mainly builds fabric model based on the physical characteristics as well as use the dynamic simulation technology to carry out research and analysis over the issues of the authenticity of cloth simulation,which includes the following aspects.In the paper,the mass-spring model based on the physical properties of the fabric was used as the basic cloth model,and then the analysis of the physical mechanics was carried out on each particle in the model.After that,the internal force and the external force can be drawn based on the analysis of the physical properties of the fabric and force analysis of the actual state of cloth.After determining the internal force and external force of the particles in mass-spring model,the differential equation in the dynamic cloth simulation can be listed according to the formula and the size of the resultant force.In order to solve these differential equations,in this paper,three explicit integration methods and Verlet integral method are used adaptively to realize the effect of the final garment.Traditional cloth simulation will take a single integral method and cannot choose a more appropriate method based on the results,this paper can be compared through four kinds of integration method to determine which is more suitable for this skirt simulation of analytical methods.For the super-elastic phenomenon generated in the process of cloth simulation,the improved mass constrained method was used to modify the phenomenon.According to the judgement condition,the position correction and velocity correction ways of the method is applied to the particles at both ends of the springs.In the paper,the method and the basis of speed correction are put forward in detail.The improved mass constrained method can simulate the movement of fabric more effectively,avoid the phenomenon of super-elastic in a better way and make the results of simulation more real.In the paper,an effective simulation of the skirt model was carried out.Unlike the other fabrics which see the rectangle as the main prototype of cloth simulation,the paper presented the simulation of circular fabric based on the mass-spring model.As the paper mainly simulate the simulation effects of the skirt on the waist of the human body,it is different from other simulation work applied on the rectangle or the circular object.The paper puts forward the idea of seeing the ellipse as the waist model of the human body,and finally emulates the circular shaped skirt on the ellipse shaped waist model.In the simulation process,after the corresponding force analysis,four kinds of integration methods were used in the paper respectively for the cloth simulation analysis in the paper to generate the comparison as the final results.According to the different integration methods,different states of skirts can be obtained as the final simulation results,which has realistic effects and has real drapes and folds.