本文關(guān)鍵詞：深層月壤取芯方案設(shè)計(jì)與驗(yàn)證技術(shù)研究　出處：《哈爾濱工業(yè)大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 無滑差軟袋取芯 方案設(shè)計(jì) 參數(shù)優(yōu)化 試驗(yàn)驗(yàn)證

【摘要】：探月工程三期的核心目標(biāo)是“采樣返回”，預(yù)計(jì)于2017年前后實(shí)施，屆時(shí)將利用鉆取、表取兩種采樣方式獲取月球樣品。鉆取采樣的目標(biāo)是：獲取月面以下2m保持原態(tài)層理信息的月壤樣品。其中，月壤取芯動(dòng)作是采樣成敗的關(guān)鍵性環(huán)節(jié)，取芯方案、取芯機(jī)構(gòu)設(shè)計(jì)是探月工程三期預(yù)先研究需首先予以突破的關(guān)鍵技術(shù)之一。本文以哈爾濱工業(yè)大學(xué)承擔(dān)的月面采樣預(yù)先研究項(xiàng)目為工程背景，結(jié)合我國(guó)月面采樣的初步方案規(guī)劃，開展深層月壤取芯多方案比較與分析工作，對(duì)優(yōu)選的取芯方案進(jìn)行細(xì)化設(shè)計(jì)和試驗(yàn)驗(yàn)證，支撐鉆取采樣裝置工程實(shí)施方案的制定。 本文深入調(diào)研分析了國(guó)內(nèi)外星球土壤樣品取芯技術(shù)，通過理論分析和試驗(yàn)對(duì)比，提出了滿足我國(guó)探月工程三期采樣指標(biāo)要求的取芯總體方案“內(nèi)翻式無滑差軟袋取芯”；基于“內(nèi)翻式無滑差軟袋取芯”原理，根據(jù)目前采樣鉆具和鉆進(jìn)驅(qū)動(dòng)機(jī)構(gòu)設(shè)計(jì)適應(yīng)性要求，在充分滿足取芯機(jī)構(gòu)輕量化、低功耗、高取芯率、高層理信息保持性等約束條件的基礎(chǔ)上，完成了兩套深層月壤取芯功能實(shí)現(xiàn)方案的詳細(xì)設(shè)計(jì)，兩套方案均涵蓋軟袋布置方案及封口方案。 基于巖土力學(xué)和理論力學(xué)等理論體系，研究了取芯特性參數(shù)與取芯負(fù)載間的關(guān)系，以低功耗為目標(biāo)初步完成了取芯特性參數(shù)的優(yōu)化，為后續(xù)試驗(yàn)件參數(shù)的制定提供了理論依據(jù)；定性分析了取芯材料特性參數(shù)對(duì)取芯率及層理信息的影響，給出了取芯柔性組件材料的設(shè)計(jì)優(yōu)化方向。 根據(jù)參數(shù)優(yōu)化分析結(jié)果，結(jié)合取芯機(jī)構(gòu)特殊工作環(huán)境的需要，，提出了深層月壤取芯機(jī)構(gòu)的詳細(xì)性能需求，并給出了相應(yīng)的性能實(shí)現(xiàn)方案，研制出了針對(duì)兩套方案的取芯驗(yàn)證試驗(yàn)件。 研制了取芯功能驗(yàn)證試驗(yàn)裝置，完成了針對(duì)兩套試驗(yàn)件的取芯功能驗(yàn)證試驗(yàn)與封口效果驗(yàn)證試驗(yàn)；利用環(huán)境設(shè)備、材料性能測(cè)試設(shè)備等試驗(yàn)條件完成了取芯柔性組件的高低溫、輻照環(huán)境下力學(xué)性能驗(yàn)證試驗(yàn)、可靠性驗(yàn)證試驗(yàn)以及化學(xué)穩(wěn)定性驗(yàn)證試驗(yàn)，從功能和性能兩個(gè)角度驗(yàn)證了方案的可行性與可靠性。
[Abstract]:The core goal of the third phase of the lunar exploration project is "sampling and return", which is expected to be implemented around 2017, when drilling will be used. The goal of drilling sampling is to obtain the lunar soil sample which is 2 m below the lunar surface to keep the original stratigraphic information. The core action of lunar soil is the key link of the success or failure of sampling. The design of core-fetching mechanism is one of the key technologies that need to be broken through in the third phase of lunar exploration project. This paper takes the project of lunar surface sampling as the engineering background of Harbin University of Technology. Combined with the preliminary plan of lunar surface sampling in China, the comparison and analysis of the core extraction schemes of deep lunar soil were carried out, and the detailed design and experimental verification of the selected core extraction scheme were carried out. Make the project implementation scheme of the supporting drilling sampling device. In this paper, the coring technology of the soil samples of the planets at home and abroad was investigated and analyzed, and the theoretical analysis and experimental comparison were carried out. This paper puts forward the overall core-fetching scheme, which meets the requirement of sampling index in the third phase of the lunar exploration project in China. Based on the principle of "unslip soft bag coring", according to the design adaptability requirement of sampling drilling tool and drilling driving mechanism, it can fully meet the requirements of light weight, low power consumption and high coring rate of coring mechanism. On the basis of the constraint conditions such as the retention of high-level information, two sets of deep lunar soil coring schemes are designed in detail, both of which cover the soft bag arrangement and sealing scheme. Based on the theoretical system of geotechnical mechanics and theoretical mechanics, the relationship between coring characteristic parameters and coring load is studied, and the optimization of coring characteristic parameters is preliminarily completed aiming at low power consumption. It provides a theoretical basis for the formulation of the parameters of the subsequent test piece. The influence of characteristic parameters of coring material on coring rate and bedding information is analyzed qualitatively, and the optimization direction of material design for core-taking flexible assembly is given. According to the results of parameter optimization analysis and the need of special working environment of coring mechanism, the detailed performance requirements of deep lunar soil coring mechanism are put forward, and the corresponding performance realization scheme is given. A coring and verification test piece for two sets of schemes has been developed. The coring function verification test device was developed, and the coring function verification test and sealing effect verification test for two sets of test pieces were completed. The high and low temperature, irradiation mechanical properties, reliability and chemical stability tests of core-taking flexible assembly were completed by using environmental equipment, material performance testing equipment and other test conditions. The feasibility and reliability of the scheme are verified in terms of function and performance.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：P634;V476.3;P184

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相關(guān)期刊論文 前9條

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本文編號(hào)：1394943