摘要
为了解决平板型太阳能聚光器因受力不均匀导致的聚光效率下降的问题,提出了以9块阵列透镜作为聚光模组的装配方式.设定聚光模组阵列与光波导板之间的空气间隙为2mm,通过ANSYS软件对聚光器进行线性静力分析和模态分析.设定风速为18m/s,高于指标等级14m/s,聚光器的模态分析基频为0.038s,满足结构刚度无需考虑动态影响的条件.讨论了结构组件在受到极限静风载的情况下,聚光模组与光波导板结构之间的位移变化和对应的前6阶的模态系数.结果表明:静力分析情况下聚光模组结构与光波导板之间的空气间隙最大位移为0.049mm,满足设计精度要求;在5种角度工况下,前6阶模态振型与施加预应力的模态振型相差在1%以内,且对应振型图形态类似,证明风载荷对于振型无影响.
In order to solve the problem of the drop of the condenser efficiency caused by the nonuniform force of the flat panel solar concentrator,an assembly method using nine array lenses as the condenser module was proposed.The air gap between the condenser module array and the optical waveguide board was set to 2 mm.Linear static analysis and modal analysis of flat solar concentrators were performed using ANSYS software.The set wind speed was 18 m/s,which was higher than the index level of 14 m/s,and the modal analysis fundamental frequency of the concentrator was 0.038 s.It is not necessary to take into account the dynamic influence conditions for the structural rigidity.The displacement of the concentrator and the optical waveguide plate structure under the condition of extreme static wind load and the modal coefficients of the first six orders in the corresponding case were discussed.The results show that the maximum displacement of the air gap between the concentrator and the optical waveguide plate structure is 0.049 mm,meeting the accuracy requirement.In the five kinds of the angle condition,the difference between the front 6 modes modal shape prestressed and processing mode shape is within 1%,and the corresponding shape patterns are similar.It is proved that the wind load has no effect on the mode shape.
作者
刘欣然
张宁
徐熙平
尹鹏
LIU Xin-ran;ZHANG Ning;XU Xi-ping;YIN Peng(College of Photoelectrical Engineering, Changchun University of Science and Technology, Changchun 130022 ,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2018年第7期119-129,共11页
Acta Photonica Sinica
基金
吉林省科技发展项目(No.20170204048GX)资助~~
关键词
太阳能聚光器
震动特性
有限元
聚光模组
模态参数
预应力
静力分析
Solar concentrator
Vibration characteristics
Finite element
Spotlight module
Modalparameters
Prestress
Static analysis
