某無人機起落架改型設(shè)計
本文選題:滑橇式起落架 + 復(fù)合材料 ; 參考:《南京航空航天大學(xué)》2016年碩士論文
【摘要】:無人機具有成本低、重量輕、無人員傷亡、機動性能好、適應(yīng)性強等優(yōu)點,在軍事和民用領(lǐng)域上有著廣泛的發(fā)展前景。起落架是無人機的重要組成部分,它的工作性能直接影響無人機的安全;潦狡鹇浼芙Y(jié)構(gòu)簡單、質(zhì)量較輕,主要用于雪地和沙灘等松軟著陸面不適合采用輪式起落架,或者著陸時平飛速度較小而無需采用輪式起落架的情況。本文根據(jù)一般起落架的基本任務(wù)和設(shè)計思路,提出了某型無人機滑橇式起落架的結(jié)構(gòu)設(shè)計,根據(jù)起落架的使用要求,確定了起落架的基本形式和結(jié)構(gòu)材料。對起落架分別進行靜力學(xué)和動力學(xué)分析,根據(jù)靜強度的分析結(jié)果調(diào)整結(jié)構(gòu)參數(shù),然后進行動力學(xué)分析,使結(jié)構(gòu)滿足使用要求。根據(jù)起落架的初步設(shè)計參數(shù),使用ABAQUS建立了滑橇式起落架的有限元模型,對結(jié)構(gòu)進行合理地鋪層,將起落架的使用要求等效成合適的載荷和約束施加在模型上,計算其靜強度和動強度,通過計算結(jié)果發(fā)現(xiàn)設(shè)計的模型符合起落架的強度要求,說明了該設(shè)計方案的合理性。然后對細節(jié)處進行分析,同樣建立有限元模型進行力學(xué)仿真,得到在各工況下的應(yīng)力和變形,計算結(jié)果表明細節(jié)處的設(shè)計同樣滿足要求。該滑橇式起落架通過本文的設(shè)計不僅滿足無人機的使用要求和各工況下的強度要求,而且大大減輕了質(zhì)量和使用成本,達到了本文的研究目的。
[Abstract]:Unmanned aerial vehicle (UAV) has the advantages of low cost, light weight, no casualties, good maneuverability, strong adaptability and so on. Landing gear is an important part of UAV. Its performance directly affects the safety of UAV. The skid landing gear is simple in structure and light in mass. It is mainly used in soft landing surface such as snow and beach, which is not suitable for wheeled landing gear, or when landing speed is small and the wheel landing gear is not needed. According to the basic tasks and design ideas of the general landing gear, the structure design of the skid landing gear for a certain type of UAV is put forward, and the basic form and structure material of the landing gear are determined according to the requirements of the landing gear. The structural parameters are adjusted according to the results of static strength analysis, and then the dynamic analysis is carried out to make the structure meet the requirements of application. According to the preliminary design parameters of the landing gear, the finite element model of the skid landing gear is established by using ABAQUS. The structure is reasonably covered, and the requirements for the use of the landing gear are equivalent to the appropriate loads and constraints to be applied to the model. The static strength and dynamic strength are calculated. It is found that the designed model meets the strength requirements of the landing gear, and the rationality of the design scheme is illustrated. Then the details are analyzed and the finite element model is established to simulate the stress and deformation under various working conditions. The calculation results show that the design of the details also meets the requirements. The design of the skid landing gear not only meets the requirements of UAV use and strength under various conditions, but also greatly reduces the quality and cost of use, and achieves the purpose of this paper.
【學(xué)位授予單位】:南京航空航天大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:V279
【參考文獻】
相關(guān)期刊論文 前10條
1 唐見茂;;航空航天復(fù)合材料發(fā)展現(xiàn)狀及前景[J];航天器環(huán)境工程;2013年04期
2 景巖;;無人機發(fā)展綜述[J];才智;2013年16期
3 魏凱;陳銘;;輕型直升機起落架的載荷分析與設(shè)計[J];飛機設(shè)計;2012年02期
4 陳紹杰;;復(fù)合材料技術(shù)發(fā)展及其對我國航空工業(yè)的挑戰(zhàn)[J];高科技纖維與應(yīng)用;2010年01期
5 張中利;于存貴;馬大為;樂貴高;;復(fù)合材料定向管動力響應(yīng)及優(yōu)化分析[J];南京理工大學(xué)學(xué)報(自然科學(xué)版);2009年03期
6 張永剛;王淑沅;方灶旺;陶文斌;;復(fù)合材料夾層結(jié)構(gòu)翼型件的有限元分析[J];纖維復(fù)合材料;2009年02期
7 方媛媛;曹榮生;張智;;基于VC++的起落架的三維仿真系統(tǒng)實現(xiàn)[J];應(yīng)用科技;2009年05期
8 施興燦;趙美英;;復(fù)合材料層合板有限元分析及疲勞壽命預(yù)測[J];航空計算技術(shù);2009年02期
9 蘇云洪;劉秀娟;楊永志;;復(fù)合材料在航空航天中的應(yīng)用[J];工程與試驗;2008年04期
10 沈軍;謝懷勤;;先進復(fù)合材料在航空航天領(lǐng)域的研發(fā)與應(yīng)用[J];材料科學(xué)與工藝;2008年05期
,本文編號:1908329
本文鏈接:http://sikaile.net/kejilunwen/hangkongsky/1908329.html