Spring model-based ball B spline tricot deformation simulation method

Abstract

The invention discloses a spring model-based ball B spline tricot deformation simulation method. According to the method, deformation simulation is performed on a ball B spline structure-based tricot, a ball B spline is characterized by defining a series of control points, control radii of the control points and B spline curves associated with the control points to show 2D (two dimensional) and 3D (three dimensional) drawings, during operation, spring models are built among coils of the tricot based on a Hooke law, accurate deformation of the tricot can be realized by changing the ball B spline curve control points and corresponding depths, and storage efficiency and transmission efficiency are improved. The spring model-based ball B spline tricot deformation simulation method has the advantages that a parameterization method is adopted for computer three dimensional simulation on the weft knitting tricot, user interactive operation is facilitated, a tricot deformation model can be truly simulated in a computer by less data, an excellent simulation effect is achieved, and a new thinking and method is provided for deformation simulation on the tricot in a CAD (Computer Aided Design) system.

Description

technical field [0001] The invention relates to a method for simulating deformation of spherical B-spline knitted fabrics based on a spring model, and belongs to the field of computer graphics. Background technique [0002] Three-dimensional fabric dynamic simulation technology is to study how to use the theories and technologies in the fields of computer graphics, computational geometry, textile materials, and elastic mechanics to realistically simulate the natural space state of fabrics on the computer. It is accompanied by the rapid development of computer hardware and graphics algorithms. a high-tech. [0003] For example, the patent application number CN201010565036.6 discloses a soft tissue deformation simulation method based on smooth particle hydrodynamics, which belongs to the field of graphics processing technology. The method uses smooth particle hydrodynamics to reflect soft tissue deformation with a viscoelastic model. The biomechanical properties of the biomec...

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Problems solved by technology

The finite element model calculates the deformation of the fabric from the essence of the continuum. Its expression is not as complicated as the particle model, and the calculation efficiency is higher. However, in a word, the common problem of the above methods is that the nonlinear processing of large deformation is directly related to the results. Accuracy; comparatively speaking, the calculation efficiency is not low, but it still cannot meet the real-time requirements

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