摘要
受仿生观念启发,通过对力学与传热性能的表征和优化分析,研究了多层薄壁结构的承载和热防护的一体化设计问题。以生活在印度洋底的蜗牛壳结构为原型,构造了分层薄壁结构受力和传热的概念性模型,开展了热防护和承载性能的表征与分析。通过三维气动加热算例和基于遗传算法的优化设计,验证了仿生结构具有最佳的材料参数的排布,是综合热防护和承载性能于一体的优越结构形式。
The bionics-based integrated analysis and design is performed for loading capacity and thermal protection of multilayer thin-walled structures through mechanical computations and optimization. The prototype of the thin multilayer model is inspired by the shell of snails that live on the floor of Indian Ocean. The layering model considering force and heat transfer is created and analyzed for characteristics of thermal protection and loading capacity. Through an example of three dimensional aerodynamic heating and a structural optimization based on genetic algorithm, it is demonstrated that the bionics-inspired multilayer structure has the best distribution of materials, and can be adopted as a superior prototype for the design of thermal protection and loading capacity.
出处
《工程力学》
EI
CSCD
北大核心
2015年第7期26-31,共6页
Engineering Mechanics
基金
国家自然科学基金重点项目(91216201)
关键词
仿生
热防护
承载
一体化设计
优化
遗传算法
bionics
thermal protection
loading capacity
integrated design
optimization
genetic algorithm