本文選題：暗物質(zhì)探測衛(wèi)星 + 靜力分析��； 參考：《北京工商大學(xué)》2014年碩士論文

【摘要】：暗物質(zhì)粒子探測衛(wèi)星的首要科學(xué)目標(biāo)是尋找暗物質(zhì)粒子，整顆衛(wèi)星包括塑閃陣列探測器、硅陣列探測器（STK）、BGO量能器、中子探測器。作為衛(wèi)星的有效載荷，暗物質(zhì)粒子探測衛(wèi)星必須經(jīng)歷發(fā)射過程的考驗，在發(fā)射過程中，要受到相應(yīng)的慣性力、以及正弦振動和隨機(jī)振動，，要求起支撐作用的硅陣列探測器要有足夠的剛度、強(qiáng)度和優(yōu)良的動態(tài)性能；硅陣列探測器是我國目前研制的規(guī)模最大、結(jié)構(gòu)最復(fù)雜的空間探測器系統(tǒng)，無法采用理論分析,主要采用有限元分析結(jié)合試驗的方法進(jìn)行設(shè)計。 本文應(yīng)用INVENTOR和大型通用有限元分析軟件ANSYS，對硅陣列探測器在初樣至鑒定樣階段的多個設(shè)計方案進(jìn)行了有限元建模研究、各種工況下的有限元動態(tài)分析以及結(jié)構(gòu)的改進(jìn)設(shè)計。論文首先以單層蜂窩板為研究對象，通過有限元分析結(jié)合振動試驗，對蜂窩板的有限元建模方案進(jìn)行了研究，并將其應(yīng)用于整尺寸蜂窩板，結(jié)合復(fù)合材料失效準(zhǔn)則，對蒙皮和支撐結(jié)構(gòu)的材料進(jìn)行了選取，根據(jù)環(huán)境模擬試驗條件，完成了整尺寸蜂窩板的超載靜力計算和模態(tài)計算，對其設(shè)計進(jìn)行了評估；在此基礎(chǔ)上，建立了探測器整體的有限元模型，并對其進(jìn)行了超載靜力分析、模態(tài)分析、正弦振動分析以及隨機(jī)振動分析，參與了暗物質(zhì)硅陣列探測器初樣的振動試驗，并對有限元結(jié)果和試驗結(jié)果進(jìn)行了對比分析，對暗物質(zhì)硅陣列探測器初樣的設(shè)計方案進(jìn)行了評估；根據(jù)評估結(jié)果，提出了單層板的3種改進(jìn)方案，并對其進(jìn)行了對比分析，對改進(jìn)后的硅陣列探測器進(jìn)行了超載靜力分析和模態(tài)分析，并對其力學(xué)動態(tài)特性進(jìn)行了評定。通過研究工作，得到了與實際形狀蜂窩芯子蜂窩板模態(tài)結(jié)果，及振動試驗掃頻結(jié)果吻合度較高的蜂窩板簡化建模方案；結(jié)合有限元方法，并考慮到實際加工的因素，確定了蜂窩板蒙皮及支撐結(jié)構(gòu)的材料；提出了滿足強(qiáng)度、剛度以及動態(tài)性能要求的暗物質(zhì)硅陣列探測器設(shè)計方案。研究結(jié)果為產(chǎn)品的進(jìn)一步改進(jìn)提供理論依據(jù)，研究工作具有較強(qiáng)的理論和實際應(yīng)用價值。
[Abstract]:The primary scientific goal of the dark matter particle detection satellite is to search for dark matter particles. The whole satellite includes a plastic flashover array detector, a silicon array detector, a BGO calorimeter and a neutron detector. As the payload of the satellite, the dark matter particle detection satellite must undergo the test of the launching process. During the launching process, it must be subjected to the corresponding inertial force, as well as sinusoidal vibration and random vibration. The silicon array detector must have enough rigidity, strength and excellent dynamic performance, the silicon array detector is the largest and most complicated space detector system developed in our country at present, so it can not be analyzed theoretically. The method of finite element analysis combined with test is used to design. In this paper, by using Inventor and ANSYS, the finite element modeling, dynamic finite element analysis and structural improvement of silicon array detector in the initial stage to the identification stage are studied. Firstly, the finite element modeling scheme of honeycomb plate is studied by finite element analysis combined with vibration test, and it is applied to the whole size honeycomb plate, and combined with the failure criterion of composite material. The materials of skin and bracing structure are selected. According to the conditions of environmental simulation test, the static calculation and modal calculation of the whole size honeycomb plate are completed, and the design of the honeycomb plate is evaluated. The finite element model of the whole detector is established, and the static analysis, modal analysis, sinusoidal vibration analysis and random vibration analysis of the detector are carried out, which participate in the initial vibration test of the dark matter silicon array detector. The results of finite element analysis and experiment are compared, and the design scheme of the initial sample of dark matter silicon array detector is evaluated, according to the evaluation results, three improved schemes of single layer plate are put forward, and the results are compared and analyzed. The static analysis and modal analysis of the modified silicon array detector are carried out, and the dynamic mechanical characteristics of the detector are evaluated. Through the research work, the modal results of honeycomb plate with actual shape, and the simplified modeling scheme of honeycomb plate with high coincidence with the results of vibration test and frequency sweep are obtained, the finite element method is combined and the factors of actual machining are taken into account. The materials of honeycomb sheet skin and supporting structure are determined, and the design scheme of dark matter silicon array detector which meets the requirements of strength, stiffness and dynamic performance is proposed. The research results provide theoretical basis for further improvement of the product, and the research work has strong theoretical and practical application value.
【學(xué)位授予單位】：北京工商大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：V476;P145.9

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 彭永超;張慧萍;崔建偉;晏雄;;淺談纖維增強(qiáng)復(fù)合材料在航空工業(yè)中的應(yīng)用[J];產(chǎn)業(yè)用紡織品;2006年10期

2 常進(jìn);;暗物質(zhì)粒子探測:意義、方法、進(jìn)展及展望[J];工程研究-跨學(xué)科視野中的工程;2010年02期

3 王錫明;多自由度線性振動系統(tǒng)運動微分方程的確定[J];北京輕工業(yè)學(xué)院學(xué)報;1993年01期

4 龍英;滕召金;趙福水;;有限元模態(tài)分析現(xiàn)狀與發(fā)展趨勢[J];湖南農(nóng)機(jī);2009年07期

5 楊康,韓濤;ANSYS在模態(tài)分析中的應(yīng)用[J];佳木斯大學(xué)學(xué)報(自然科學(xué)版);2005年01期

6 張新民;陳學(xué)雷;;暗物質(zhì)、暗能量研究進(jìn)展及中國的機(jī)遇[J];中國科學(xué)院院刊;2011年05期

7 劉義,許志沛;機(jī)械設(shè)計中基于有限元方法的模態(tài)分析[J];機(jī)械;2003年S1期

8 曹妍妍;趙登峰;;有限元模態(tài)分析理論及其應(yīng)用[J];機(jī)械工程與自動化;2007年01期

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