摘要
文章提出一种用于太阳能飞机的超轻质太阳能电池嵌入式蒙皮结构,以硬质聚氨酯泡沫作为机翼上蒙皮,太阳能电池片胶接在蒙皮上。对具有多块太阳能电池的嵌入式结构进行有限元分析,随着粘接点数的增加,结构的应力和位移均减小,当粘接点数增加到16点以后,应力和位移变化不大。通过增加硬质聚氨酯泡沫的厚度或利用玻璃纤维带进行局部加强均可改善结构的刚度,但后者效果更为明显。通过优选玻璃纤维带的参数,嵌入式结构的刚度有了极大提高。
Sections 1 through 3 of the full paper explain our exploration mentioned in the title, which we believe has succeeded in providing some useful results for conceptual design. Their core consists of： ＂To improve the structural efficiency of solar powered aircraft, an ultra-light solar cell embedded structure was designed, in which solar cells were adhesively bonded to the upper wing skin made of rigid polyurethane foam （RPUF）. Three-point bending tests were carried out for both raw solar cells and cells encapsulated lay epoxy, t hen the stress ano oeIormauon of the embedded structure under air pressure was analyzed by FEM （finite element method） software. Local reinforcement by glass fiber ribbons was used to improve the stiffness characteristic of the embedded structure. And the size of the glass fiber ribbon was optimized according to the FEM results. ＂ The simulation results, presented in Tables 4 through 6, and their analysis show preliminarily that ： （ 1 ） the encapsulated solar cells have better flexibility and are more suitable for embedded structures; （2） both the stress and deformation of the embedded structure decrease with increasing number of bonded points between cell and skin until it reaches 16; （3） the reinforced structure has remarkable stiffness improvement compared with the original design scheme; it decreases the structural deformation by 93 % with only 3 % weight increment. Section 4 gives three preliminary conclusions with more detailed descriptions.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2012年第5期663-667,共5页
Journal of Northwestern Polytechnical University
关键词
太阳能飞机
太阳能电池
硬质聚氨酯泡沫蒙皮
嵌入式结构
aircraft, computer simulation, computer software, efficiency, experiments, finite element method,photovoltaic cells, schematic diagrams, stiffness, structural analysis, structural design, structural optimization, wings
RPUF （ rigid polyurethane foam） skin, embedded structure
