A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Secondary design method of topological optimization bridge
The invention discloses a secondary design method for a topological optimization bridge. The method comprises the steps that the shape contour and the size of the bridge are preliminarily designed; generating a grid structure of the bridge to determine material distribution and geometric shape of the bridge; performing zooming and stretching on the grid structure to generate a 3D structure with a cavity; dividing the 3D structure into a plurality of segmented structures so as to facilitate 3D printing of the segmented structures; determining rib materials of the bridge and an arrangement mode of the rib materials so as to improve the tensile and anti-cracking capacities of the bridge; performing finite element analysis on the bridge subjected to secondary design; judging whether the strength and the deformation of the bridge are reasonable or not, if yes, executing the next step, and if not, repeating the previous steps; and generating a secondary design structure and generating a 3D printing file of the bridge based on the 3D structure, the plurality of segmented structures, the rib materials of the bridge and the arrangement mode of the rib materials. According to the invention, the problems of insufficient structural performance, high manufacturing complexity and high cost of a bridge in topological optimization design are solved.
本发明公开了一种拓扑优化桥梁的二次设计方法，包括：初步设计桥梁的形状轮廓和尺寸；生成桥梁的网格结构以确定桥梁的材料分布和几何形状；将网格结构通过缩放和拉伸生成带空腔的3D结构；将3D结构划分为多个分段结构以便于分段结构的3D打印；确定桥梁的筋材及其布置方式以提高桥梁的抗拉和抗裂能力；对二次设计后的桥梁进行有限元分析；判断桥梁的强度、变形和是否合理，若合理，则进行下一步，若不合理，则重复前述步骤；基于3D结构、多个分段结构和桥梁的筋材及其布置方式，生成二次设计结构并生成桥梁的3D打印文件。本发明解决了拓扑优化设计的桥梁存在结构性能不足和制造复杂度高、成本高的问题。
Secondary design method of topological optimization bridge
The invention discloses a secondary design method for a topological optimization bridge. The method comprises the steps that the shape contour and the size of the bridge are preliminarily designed; generating a grid structure of the bridge to determine material distribution and geometric shape of the bridge; performing zooming and stretching on the grid structure to generate a 3D structure with a cavity; dividing the 3D structure into a plurality of segmented structures so as to facilitate 3D printing of the segmented structures; determining rib materials of the bridge and an arrangement mode of the rib materials so as to improve the tensile and anti-cracking capacities of the bridge; performing finite element analysis on the bridge subjected to secondary design; judging whether the strength and the deformation of the bridge are reasonable or not, if yes, executing the next step, and if not, repeating the previous steps; and generating a secondary design structure and generating a 3D printing file of the bridge based on the 3D structure, the plurality of segmented structures, the rib materials of the bridge and the arrangement mode of the rib materials. According to the invention, the problems of insufficient structural performance, high manufacturing complexity and high cost of a bridge in topological optimization design are solved.
本发明公开了一种拓扑优化桥梁的二次设计方法，包括：初步设计桥梁的形状轮廓和尺寸；生成桥梁的网格结构以确定桥梁的材料分布和几何形状；将网格结构通过缩放和拉伸生成带空腔的3D结构；将3D结构划分为多个分段结构以便于分段结构的3D打印；确定桥梁的筋材及其布置方式以提高桥梁的抗拉和抗裂能力；对二次设计后的桥梁进行有限元分析；判断桥梁的强度、变形和是否合理，若合理，则进行下一步，若不合理，则重复前述步骤；基于3D结构、多个分段结构和桥梁的筋材及其布置方式，生成二次设计结构并生成桥梁的3D打印文件。本发明解决了拓扑优化设计的桥梁存在结构性能不足和制造复杂度高、成本高的问题。
Secondary design method of topological optimization bridge
拓扑优化桥梁的二次设计方法
YANG SHUO (author) / FENG MINGYANG (author) / HAN LIFANG (author) / YANG YAN (author) / WU SIYUAN (author) / LOU TING (author)
2024-11-08
Patent
Electronic Resource
Chinese
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