金属薄片自适应变形
发布时间：2019-06-29 12:50
【摘要】：近年来,基于物理模型的可视化仿真技术不断进步,如帽子自由落体与桌面碰撞变形、旗帜在风中飘扬、粘弹性物体之间的互相撞击等,具有高度真实感的仿真技术已经成为未来几年里各计算机应用领域中最为热门的发展方向。本文基于对金属材料特性的分析,通过对金属薄片弯折变形、冲压成型等物理过程进行模拟,在相关研究工作的基础上,对变形过程进行优化,给出了一个快速有效的金属薄片自适应变形仿真的框架,并给出多种金属材料的变形实验对比,以验证其有效性和先进性。本文的主要工作内容和创新点如下:1.提出了新的、针对金属材料薄片变形的虚拟仿真框架,研究分析、并验证了金属薄片材料各种物理特性,如弹性模量,弯曲刚度,拉伸刚度等;2.在金属薄片网格中嵌入加劲肋,针对不同的金属材料,通过调整相关参数,针对不同的弯曲刚度、实现了不同程度的加劲肋,提高了金属薄片变形仿真的真实感效果;3.在自适应重新网格化的过程中,考虑金属独特的拉伸性能,对现有工作中的网格最佳尺寸优化条件做了增删,相关实现结果及分析表明,改进后的自适应重新网格化算法具有更为真实的变形模拟效果;
[Abstract]:In recent years, visual simulation technology based on physical model has made continuous progress, such as hat free fall and desktop collision deformation, flag fluttering in the wind, interaction between Viscoelastic objects and so on. The highly realistic simulation technology has become the most popular development direction in the field of computer applications in the next few years. In this paper, based on the analysis of the characteristics of metal materials, the physical processes such as bending deformation and stamping forming of metal sheets are simulated. On the basis of the related research work, the deformation process is optimized, a fast and effective framework for adaptive deformation simulation of metal sheets is given, and the deformation experiments of various metal materials are given to verify its effectiveness and advanced nature. The main contents and innovations of this paper are as follows: 1. A new virtual simulation framework for sheet deformation of metal materials is proposed, and various physical properties of metal sheet materials, such as elastic modulus, bending stiffness, tensile stiffness and so on, are verified. The stiffener is embedded in the metal sheet grid, and according to different metal materials, by adjusting the relevant parameters and different bending stiffness, the stiffener is realized in different degrees, and the realistic effect of metal sheet deformation simulation is improved. 3. In the process of adaptive regridding, considering the unique tensile properties of metals, the optimal grid size optimization conditions in the existing work are added and deleted. The related implementation results and analysis show that the improved adaptive regridding algorithm has a more real deformation simulation effect.
【学位授予单位】：辽宁师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG115.5
本文编号：2507829
[Abstract]:In recent years, visual simulation technology based on physical model has made continuous progress, such as hat free fall and desktop collision deformation, flag fluttering in the wind, interaction between Viscoelastic objects and so on. The highly realistic simulation technology has become the most popular development direction in the field of computer applications in the next few years. In this paper, based on the analysis of the characteristics of metal materials, the physical processes such as bending deformation and stamping forming of metal sheets are simulated. On the basis of the related research work, the deformation process is optimized, a fast and effective framework for adaptive deformation simulation of metal sheets is given, and the deformation experiments of various metal materials are given to verify its effectiveness and advanced nature. The main contents and innovations of this paper are as follows: 1. A new virtual simulation framework for sheet deformation of metal materials is proposed, and various physical properties of metal sheet materials, such as elastic modulus, bending stiffness, tensile stiffness and so on, are verified. The stiffener is embedded in the metal sheet grid, and according to different metal materials, by adjusting the relevant parameters and different bending stiffness, the stiffener is realized in different degrees, and the realistic effect of metal sheet deformation simulation is improved. 3. In the process of adaptive regridding, considering the unique tensile properties of metals, the optimal grid size optimization conditions in the existing work are added and deleted. The related implementation results and analysis show that the improved adaptive regridding algorithm has a more real deformation simulation effect.
【学位授予单位】：辽宁师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG115.5
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