本文選題：月球鉆取采樣器 + 動力學　； 參考：《中國礦業(yè)大學（北京）》2012年博士論文

【摘要】：月壤鉆取采樣器中,細長鉆桿的運動有回轉、軸向沖擊及進給。文中分別建立了采樣器中鉆機回轉運動系統(tǒng)的驅動電機轉子、齒輪傳動、鉆桿動力學方程；鉆桿軸向受壓與受扭的耦合動力學方程；采樣器中電機驅動滾筒,滾筒纏繞鋼絲繩拉動鉆機,鉆機推動鉆桿軸向進給運動的系統(tǒng)動力學模型及方程。應用Runge-Kutta法和Matlab軟件求解了上述動力學方程,對鉆桿在不同的復雜動載荷作用下的響應和非線性特性進行了分析,研究了系統(tǒng)動力學特性及主要參數對鉆進性能的影響。建立了考慮鉆桿受軸向壓力和與鉆桿軸線傾斜的月球低重力作用下簡支梁式支承鉆桿的橫向彎曲非線性振動方程,采用攝動多尺度法得出主共振漸進解；分析了幅頻響應、運動穩(wěn)定性、振幅突變性等,并進行了幅頻響應的試驗研究。建立了中間簡支梁式支承、端部懸臂梁式支承的鉆桿復雜振型的非線性方程,對鉆桿振動和穩(wěn)定性進行了分析。上述研究工作為確保鉆桿鉆進過程中安全、可靠和采樣器的參數設計提供了理論基礎。研制了一種無人自主鉆取式采樣器樣機,用于對月球表面下月壤自動采樣與收集。在實驗室完成的采樣器功能、性能試驗顯示,在取芯、沖擊回轉鉆進、樣品纏繞整形及回收等關鍵技術方面獲得成功,為我國探月采樣及未來深空探測采樣技術做了基礎性工作。
[Abstract]:In the sampler of lunar soil drilling, the movement of slender drill pipe includes rotation, axial impact and feed. In this paper, the dynamic equations of driving motor rotor, gear drive and drill pipe in the rotary motion system of drilling rig in sampler, coupling dynamic equation of axial compression and torsion of drill pipe, driving drum of motor in sampler, are established respectively. The system dynamic model and equation of roller winding wire rope pulling rig and drilling rig pushing the axial feed motion of drill pipe. The above dynamic equations are solved by using Runge-Kutta method and Matlab software. The response and nonlinear characteristics of drill pipe under different complex dynamic loads are analyzed. The dynamic characteristics of the system and the influence of main parameters on drilling performance are studied. In this paper, the nonlinear vibration equation of lateral bending of simply supported drill pipe is established under the influence of low gravity of the moon under axial pressure and inclined axis of drill pipe. The asymptotic solution of main resonance is obtained by using perturbation multi-scale method, and the amplitude frequency response is analyzed. Motion stability, amplitude mutation and so on, and the experimental study of amplitude frequency response are carried out. The nonlinear equations of complex modes of drill pipe supported by intermediate simply supported beam and end cantilever beam are established, and the vibration and stability of drill pipe are analyzed. The above work provides a theoretical basis for ensuring the safety, reliability and parameter design of the sampler during drill pipe drilling. A prototype of an unmanned self-drilling sampler is developed for automatic sampling and collection of lunar soil under the lunar surface. The function and performance tests of the sampler completed in the laboratory show that the key technologies, such as coring, percussive drilling, sample winding, shaping and recovery, are successful. The basic work has been done for Chinese lunar exploration sampling and deep space exploration sampling technology in the future.
【學位授予單位】：中國礦業(yè)大學（北京）
【學位級別】：博士
【學位授予年份】：2012
【分類號】：P184.5

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