摘要
基于遗传算法和数值分析一体式优化平台,以设计压力因子为目标函数,结构失稳和材料静强度破坏为约束条件,纤维缠绕策略和铺层方式为变量,对静水压力作用下碳/环氧、硼/环氧和玻璃/环氧等三种复合材料壳体的耐压因子进行优化设计。结果表明,复合材料耐压壳体在深海环境下能够提供充足的正浮力;对于不同的复合材料,最大设计压力受限的因素有所不同,主要受限于结构失稳或材料强度破坏;纤维缠绕策略和铺层方式对设计压力因子具有显著影响。文中最后提出变厚度设计、复合材料肋骨等增强方式,旨在解决结构失稳或材料强度破坏对最大设计压力的限制,研究成果可为复合材料耐压壳体结构设计提供参考。
This paper presented an optimization design of composites pressure h ull subjected to hydrostaticpressure. An Optimization Platform was set up by interworking genetic algorithm and numericalanalysis. The design pressure factor was considered as the objective function. Buckling andmaterial failure were constraint conditions. Types of layup, fiber angle and ply number are optimizedfor Carbon/epoxy, Boron/epoxy and Glass/epoxy composites. The results revealed that the bucklingpressure or the material failure pressure would restrict the design pressure for different kind of composites.Different types of layup impacted the design pressure factor significantly. Application of compositematerials for deep-water pressure shell had more reserve buoyancy. Results of this study couldprovide a valuable reference for designers of underwater vehicles. And this paper suggests that newway of enhancement, such as variable thickness, composites ribs would be used to solve the conflictof buckling pressure and material failure pressure, and increase the smaller one to improve the designpressure.
作者
沈克纯
潘光
施瑶
SHEN Ke-chun;PAN Guang;SHI Yao(School of Marine Science and Technology;Key Laborator^^ for Unmanned Under^-ater Vehicle ,Northwestern Polytechnical University , X i5an 710072, China)
出处
《船舶力学》
EI
CSCD
北大核心
2017年第12期1551-1563,共13页
Journal of Ship Mechanics
基金
Supported by the National Natural Science Foundation of China(Grant Nos.51479170 and 11502210)
the National Key Research and Development Program(Grant No.2016YFC0301300)~~
关键词
静水压力
复合材料壳体
优化设计
失稳
破坏
hydrostatic pressure
composites pressure shell
optimization
buckling
failure
