本文選題：太陽(yáng)能電池帆板 + 固有頻率��； 參考：《吉林大學(xué)》2016年碩士論文

【摘要】：太陽(yáng)能電池陣是為在太空中運(yùn)行的航天器提供能量來(lái)源的撓性結(jié)構(gòu)。隨著衛(wèi)星技術(shù)的不斷發(fā)展,太陽(yáng)能電池陣的構(gòu)造形式也在不斷的變化。現(xiàn)在使用最廣泛的太陽(yáng)能電池陣結(jié)構(gòu)是折疊式的太陽(yáng)能電池帆板結(jié)構(gòu)。對(duì)太陽(yáng)能電池帆板的要求一般有以下幾個(gè)方面:太陽(yáng)能電池帆板的整體構(gòu)型要求、太陽(yáng)能電池帆板的質(zhì)量要求,還有太陽(yáng)能電池帆板的剛度要求、強(qiáng)度要求等。而太陽(yáng)能電池帆板的剛度要求一般是對(duì)于它固有頻率的要求,以保證航天器在太空中運(yùn)行時(shí)不發(fā)生動(dòng)力耦合現(xiàn)象,從而給航天器造成損壞。因此太陽(yáng)能電池帆板的頻率優(yōu)化設(shè)計(jì)具有重要的意義。現(xiàn)在對(duì)于結(jié)構(gòu)的頻率優(yōu)化設(shè)計(jì)主要有以下兩個(gè)方面:基于頻率約束,以質(zhì)量為目標(biāo)的優(yōu)化設(shè)計(jì);基于質(zhì)量或體積約束,以固有頻率為目標(biāo)的優(yōu)化設(shè)計(jì)。三維連續(xù)體結(jié)構(gòu)的頻率優(yōu)化設(shè)計(jì)是現(xiàn)如今結(jié)構(gòu)優(yōu)化設(shè)計(jì)中的熱點(diǎn)問(wèn)題。Niels Olhoff等人于2012年提出了一種頻率帶寬極大化的優(yōu)化設(shè)計(jì)方法,本文正是基于這種方法對(duì)于單側(cè)固支的太陽(yáng)能電池帆板進(jìn)行了優(yōu)化設(shè)計(jì)。本文的主要工作:(1)由于小衛(wèi)星星體的整體性要求,我們對(duì)于直接安裝在星體表面(單側(cè)固支)的太陽(yáng)能電池帆板以4、5階固有頻率之間的頻率帶寬極大化為目標(biāo),以太陽(yáng)能電池帆板原體積的三分之二為約束,使用Niels Olhoff等人推出的頻率帶寬極大化優(yōu)化設(shè)計(jì)方法,對(duì)于太陽(yáng)能電池帆板進(jìn)行了優(yōu)化設(shè)計(jì),得到了其優(yōu)化模型圖;(2)根據(jù)組成太陽(yáng)能電池帆板的基板的主要形狀和得到的優(yōu)化模型圖確定了組成太陽(yáng)能電池帆板的基板的形狀、數(shù)量和基板間鉸鏈的連接剛度,建立了太陽(yáng)能電池帆板的簡(jiǎn)化模型,并對(duì)于模型進(jìn)行了模態(tài)分析,確認(rèn)了設(shè)計(jì)的合理性;(3)分別得出了添加加強(qiáng)框、基板間鉸鏈的數(shù)量、鉸鏈的位置、鉸鏈的拉伸與彎曲剛度、約束端基板的蜂窩內(nèi)芯厚度與板的厚度、自由端蜂窩內(nèi)芯厚度與板的厚度、中間板的蜂窩內(nèi)芯厚度與板的厚度、還有添加前端連接架、連接架的剛度、連接架的拓?fù)湫螤�、連接架的縱向長(zhǎng)度這些情況對(duì)于模型各階固有頻率影響的結(jié)論,這些結(jié)論能為太陽(yáng)能電池帆板的頻率優(yōu)化設(shè)計(jì)提供一定的借鑒意義。
[Abstract]:Solar cell arrays are flexible structures that provide a source of energy for spacecraft operating in space. With the development of satellite technology, the structure of solar cell array is constantly changing. The most widely used solar cell array is the foldable solar panel structure. The requirements of solar cell panels are as follows: the overall configuration of solar cell panels, the quality requirements of solar cell panels, the stiffness requirements of solar cell panels, the strength requirements and so on. However, the stiffness requirement of solar panels is generally the requirement of its natural frequency to ensure that the spacecraft does not have dynamic coupling when it is running in space, thus causing damage to the spacecraft. Therefore, it is of great significance to optimize the frequency of solar panels. At present, there are two main aspects in the frequency optimization design of the structure: the optimal design based on the frequency constraint, with the quality as the objective, and the optimal design with the natural frequency as the objective based on the quality or volume constraints. The frequency optimization design of three-dimensional continuum structure is a hot issue in structural optimization design nowadays. Niels Olhoff et al proposed an optimal design method for maximizing the frequency bandwidth in 2012. Based on this method, the solar panel with one side clamping is optimized in this paper. The main work of this paper is: (1) due to the overall requirement of small satellite stars, we aim at maximizing the frequency bandwidth between the natural frequencies of 4 ~ 5 order for solar cell panels directly mounted on the surface of the stars (unilateral clamping). With the restriction of 2/3 of the original volume of solar panels, the optimal design method of frequency bandwidth maximization developed by Niels Olhoff et al is used to optimize the design of solar panels. According to the main shape of the substrate and the optimized model diagram, the shape, quantity and joint stiffness of the base plate are determined. The simplified model of solar cell panel is established, and the modal analysis of the model is carried out, and the rationality of the design is confirmed. (3) the added frame, the number of hinges between the substrates, the position of the hinge, the tensile and bending stiffness of the hinge are obtained, respectively. The thickness of honeycomb core and plate, the thickness of honeycomb core and plate of free end honeycomb, the thickness of honeycomb core and plate of intermediate plate, the addition of front end connecting frame, stiffness of connection frame, topological shape of connecting frame, The conclusions of the influence of the longitudinal length of the connecting frame on the natural frequencies of each order of the model can be used for reference for the optimum design of the solar cell panel frequency.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：V442

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