本文選題：模擬月壤 + 承壓特性��； 參考：《吉林大學(xué)》2013年碩士論文

【摘要】：我國(guó)探月工程計(jì)劃在2013年下半年首次開(kāi)展著陸器就位探測(cè)與月球車巡視探測(cè)的聯(lián)合探測(cè)。由于月面通過(guò)性較差，容易導(dǎo)致巡視器車輪深陷其中，并且造成嚴(yán)重打滑，所以了解月壤的物理力學(xué)性質(zhì)以及巡視器車輪在其上面的通過(guò)性極為重要。 本文在了解月壤粒徑分布范圍的基礎(chǔ)上，采用輝南縣境內(nèi)的火山渣為原料制備了三種不同粒徑分布的模擬月壤，對(duì)模擬月壤的粒徑分布、顆粒比重、容重、含水率、孔隙比等物理力學(xué)性質(zhì)進(jìn)行了檢驗(yàn)，并且與月壤的物理力學(xué)性質(zhì)進(jìn)行了比較，以月壤的緊實(shí)度為標(biāo)準(zhǔn)，對(duì)模擬月壤的整備方法進(jìn)行了研究，總結(jié)出了針對(duì)不同緊實(shí)度的制備方法。將剛性履刺輪與模擬月壤的相互作用簡(jiǎn)化為垂直載荷-沉陷和剪切應(yīng)力-位移兩個(gè)獨(dú)立的過(guò)程，，分別對(duì)模擬月壤的承壓特性和剪切特性進(jìn)行了研究，并且測(cè)量出了模擬月壤的承壓和剪切特性參數(shù)。以沉陷量、滑轉(zhuǎn)率、扭矩、掛鉤牽引力、牽引效率為指標(biāo)，通過(guò)室內(nèi)輕型月壤-車輪土槽測(cè)試系統(tǒng)研究剛性履刺輪在不同緊實(shí)度下和不同輪上載荷的牽引通過(guò)性能。通過(guò)有限元仿真軟件對(duì)月壤-車輪土槽牽引試驗(yàn)進(jìn)行了仿真分析，并且對(duì)重力加速度對(duì)月壤-土槽牽引試驗(yàn)的影響進(jìn)行了模擬和分析。該研究為巡視器地面力學(xué)試驗(yàn)及其仿真提供了標(biāo)準(zhǔn)和參考，對(duì)巡視器識(shí)別可靠路徑、提高自主性能，有著重要的意義。
[Abstract]:In the second half of 2013, China's lunar exploration project plans to carry out the first joint exploration of the landing vehicle in position and the lunar rover patrol detection in the second half of 2013. Because of the poor transmissivity of the lunar surface, it is easy to cause the wheel of the patrol to be trapped in it and cause serious skid, so it is very important to understand the physical and mechanical properties of the lunar soil and the transmissivity of the patrol wheel on it. On the basis of understanding the distribution range of lunar soil particle size, three kinds of simulated lunar soil with different particle size distribution were prepared by using volcanic slag in Huinan County as raw material. The particle size distribution, particle specific gravity, bulk density and moisture content of simulated lunar soil were studied. The physical and mechanical properties such as void ratio are tested and compared with the physical and mechanical properties of lunar soil. Based on the compactness of lunar soil, the preparation method of simulated lunar soil is studied. The preparation methods for different compactness were summarized. The interaction between rigid wheel and simulated lunar soil is simplified as two independent processes of vertical load-subsidence and shear-stress-displacement. The bearing and shear characteristics of simulated lunar soil are studied respectively. The pressure and shear characteristics of the simulated lunar soil were measured. Based on the index of subsidence, slip rate, torque, hook traction force and traction efficiency, the traction performance of rigid stuffing wheel under different compactness and load on the wheel was studied by indoor light lunar soil-wheel soil trough test system. The influence of gravity acceleration on the traction test of lunar soil-soil trough is simulated and analyzed by finite element simulation software. The research provides the standard and reference for the ground mechanics test and simulation of the patrol, and it is of great significance to identify the reliable path and improve the autonomous performance of the patrol.
【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】：2013
【分類號(hào)】：P184;V416

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