本文選題：盾構機 + 刀具�。� 參考：《湖南大學》2015年碩士論文

【摘要】：盾構機是集機械、電氣、液壓、測量、控制和巖土等多種學科技術于一體的大型掘進設備,刀盤刀具是其關鍵部件,易磨損失效。到目前為止,刀具的巖土層適應性設計方面還缺少完整的分析依據(jù),在刀具的可靠性和壽命等預估方面依舊處于起步階段;同時,雖然目前CAE技術已廣泛應用于刀盤刀具設計工作,但是計算有效性和效率一直成為其相關數(shù)字化設計領域的瓶頸問題。因此,本文基于上述相關問題的廣泛調研和分析,設計并制作了盾構實驗平臺,運用歐拉-拉格朗日耦合法(CEL法)對刀具切削機理及影響因素進行了研究,并結合遺傳算法對滾刀刀刃進行了多目標優(yōu)化設計,所獲得的主要研究成果如下:(1)基于盾構掘進技術要求和指標,設計并制作了土壓平衡盾構平臺;(2)運用牛頓定律,對盾構刀具巖土切削機理進行了深入分析,得到了切刀和滾刀受力模型;(3)基于歐拉-拉格朗日耦合法(CEL法),建立了刀盤刀具掘進的有限元模型,試驗結果驗證了計算模型的有效性和結果精確度;(4)基于CEL法的有限元計算模型,對刀具切削過程進行了分析,獲得了切刀和滾刀切削力的主要影響因素為切刀前刃角、切刀圓弧半徑、切深,其中切深的影響最大,而切削速度影響較小;滾刀刀刃寬度增加,切削力隨之增加,刀刃圓弧半徑越大,切削力越大;刀刃角增大,破碎巖石量迅速增加,磨損增加,而切削速度影響較小。(5)結合遺傳算法,對滾刀的結構參數(shù)進行多目標(磨損量和軸承支撐力)優(yōu)化,得到了17寸滾刀作用于紅砂巖時的最優(yōu)解,減小了軸承受力,降低了滾刀的磨損量,理論計算結果驗證了該優(yōu)化模型和遺傳算法求解該模型的可行性和有效性。
[Abstract]:The shield machine is a large excavating equipment integrating various disciplines such as mechanical, electrical, hydraulic, measurement, control and rock and soil. The cutter plate tool is its key component, and it is easy to wear and failure. So far, the adaptability design of the rock and soil layer of the cutter is still lacking a complete analysis basis, and is still in the predictor of the reliability and life of the cutter. At the beginning stage, at the same time, although CAE technology has been widely used in cutting tool design, the effectiveness and efficiency of calculation have been a bottleneck in the field of digital design. Therefore, based on the extensive investigation and analysis of the related problems mentioned above, a shield experiment platform is designed and made, and Euler Lagrange is used. The coupling method (CEL method) has studied the cutting mechanism and the influencing factors of the cutter, and combined the genetic algorithm to the multi-objective optimization design of the hob blade. The main research results are as follows: (1) based on the requirements and indexes of the shield tunneling technology, the earth pressure balance shield platform is designed and made, and (2) the shield tool rock is used by Newton's law. The mechanism of soil cutting is deeply analyzed, and the force model of cutter and hob is obtained. (3) based on Euler Lagrange coupling method (CEL method), the finite element model of cutting tool cutting tool is established. The test results verify the validity and result accuracy of the calculation model. (4) the cutting process of cutting tool is carried out by the finite element calculation model based on the CEL method. The main factors affecting the cutting force of the cutter and hob are the cutting edge angle before the cutter, the radius of the cutting arc and the depth of cutting, and the cutting depth has the greatest influence, but the cutting speed has little influence; the blade width increases, the cutting force increases, the greater the radius of the arc, the greater the cutting force, the increase of the blade angle and the rapid increase of the broken rock. The wear increases and the cutting speed has little effect. (5) combining the genetic algorithm, the multi-objective (wear and bearing support force) of the structural parameters of the hob are optimized. The optimal solution of the 17 inch hob on the red sandstone is obtained, the bearing force of the shaft is reduced and the grinding loss of the hob is reduced. The theoretical calculation results verify the optimization model and the genetic algorithm. The feasibility and effectiveness of the model are solved.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U455.39

【參考文獻】

相關期刊論文 前10條

1 徐孜軍;譚青;夏毅敏;易念恩;朱逸;劉川;;盾構切刀順次破巖機制的數(shù)值模擬研究[J];巖土力學;2013年12期

2 劉小剛;;TBM在巖石城市軌道交通建設中的應用研究[J];現(xiàn)代隧道技術;2012年05期

3 蘇翠俠;蔡宗熙;王燕群;亢一瀾;;基于數(shù)值仿真的盾構刀盤載荷影響因素分析[J];機械設計與研究;2012年04期

4 ;The three-dimension model for the rock-breaking mechanism of disc cutter andanalysis of rock-breaking forces[J];Acta Mechanica Sinica;2012年03期

5 王夢恕;;中國鐵路、隧道與地下空間發(fā)展概況[J];隧道建設;2010年04期

6 夏毅敏;黃利輝;周喜溫;薛靜;;盾構切刀切削巖土的試驗研究[J];礦山機械;2010年01期

7 夏毅敏;周喜溫;劉玉江;吳遁;;某型土壓平衡盾構刀盤布刀規(guī)律研究[J];湘潭大學自然科學學報;2009年04期

8 邢彤;龔國芳;楊華勇;;盾構刀盤驅動扭矩計算模型及實驗研究[J];浙江大學學報(工學版);2009年10期

9 張照煌;;盤形滾刀與巖石相互作用理論研究現(xiàn)狀及分析(一)[J];工程機械;2009年09期

10 譚青;屠昌鋒;暨智勇;夏毅敏;;盤形滾刀切割巖石的數(shù)值仿真[J];現(xiàn)代制造工程;2009年02期

，

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