摘要
扇贝形体是大自然进化的产物,是符合力学机理的空间壳体。本文针对扇贝形曲面进行形态仿生研究,应用计算机辅助几何设计中的双三次B样条方法重构曲面造型,并结合空间网壳结构特点,对曲面进行网格合理划分。同时,运用应变能最小原理,考察结构的整体力学性能,进行形体优化分析,最终实现了仿扇贝形体的网壳结构快速建模。
Scallop-shaped surface is the product of evolution and a kind of spatial shell that can satisfy the mechanical requirements. The theory of bionics is utilized to imitate the scallop：shaped surface, and the method of Bicubic B- Spline Interpolation Surface in CAGD is improved to obtain the modeling. Combining with features of space structures, mesh method is applied to divide the surface. Meanwhile, the concept of strain energy is introduced to optimize the model and finally achieve the rapid modeling of the lattice shells.
出处
《科技通报》
2008年第2期224-230,共7页
Bulletin of Science and Technology
基金
国家重大项目(50638050)
关键词
结构工程
造型
扇贝形曲面
应变能
形体优化
structure engineering
modeling
scallop-shaped surface
strain energy
optimization
