深害采矿力学行为分析VIP免费

2015届毕业设计（论文）说明书深海采矿输运软管力学行为分析院、部：机械工程学院学生姓名：指导教师1：职称指导教师2：职称专业：机械设计制造及其自动化班级：机本1104完成时间：2015-5-28摘要随着陆地资源的日渐枯竭，海洋矿藏已成为矿物开采的方向。海洋采矿的难度相对陆地采矿较大，把金属结核矿物输运到海面的技术是关键。国际上最公认的技术是利用管道流体提升，其中效率最高的是软管运输。输运软管的参数设计和材料选择是否合理，决定着整个采矿系统的性能是否优良。本文对输运软管进行力学分析，旨在为恰当确定软管的形状、尺寸和材料提供参考依据。本文针对海洋采矿作业过程中输运软管进行了静力学分析，研究分析得出输运软管在深海采矿系统作业过程中受到了自身重力、内部流体重力、浮力体拉力、海洋阻力、海水浮力、集矿机的拖拽力的作用力。讨论这些变量因素为后文的模拟仿真提供了依据。在静力学分析的基础上，本文利用ANSYS软件建立输运软管和内部流体的有限元模型。在模拟仿真计算时通过改变输运软管参数弹性模量E、管外径大小D、内流速度v、内流密度V、内流的粘性系η来研究输运软管的最大侧向位移m、最大主应力这个两大力学特性受这些因素的作用效果。通过静力学分析和模拟仿真为工程设计与实际应用提供了直观的参考结论。关键字：深海采矿、软管、静力学分析、力学特性。AbstractWiththeexhaustionofthelandresources,Marinedepositshavebecomethedirectionofthefuturemineralexploration.Andthedifficultyoftheoceanminingarerelativelythanterrestrialminingismoredifficult.AmongthemthemetalTBmineralisthekeytothesea.Themostrecognizedinternationaltechnologyistheuseofpipelinefluidtoascend,oneofthehighestefficiencyisthehose.Transporthoseparameterdesignisreasonable,determineswhetherthewholesystemhasgoodperformance.Andinthispaper,thetransporttubeisanalyzedwithmechanics,andtodetermineappropriatehoseprovidedareferencefortheshape,sizeandmaterial.Basedonthisbackground,theoceanminingoperationsintheprocessofstressiscomplex,throughthereasonablesimplification.Firsthoseforthestaticsanalysis,thispaperstudiedandanalyzedthetransporthosesareintheprocessofdeepseaminingsystemworkingload(fromtension,Marinegravity,buoyancybodyofhose,setminingmachinethedragforces).Discussthesevariablefactorssimulationprovidedthebasisforlater.Onthisbasis,setupbyuseofANSYSsoftware,atransporthoseandfiniteelementmodeloftheinternalfluid.Insimulationcalculationbychangingthetransporthoseinherentparameters(elasticmodulusE,tubediametersize),internalflowparameters(internalflowvelocityv,internalflowdensity,theviscositycoefficientofinternalflow)tostudythetransporthosemechanicalcharacteristics(themaximumlateraldisplacement,themaximumprincipalstress)bytheeffectsofthesefactors.Bystaticsanalysisandsimulationfortheengineeringdesignandpracticalapplicationprovidesavisualreferenceconclusions.Keyword:deep-seamining;hose;staticsanalysis;mechanicalcharacteristicsI目录1.绪论..............................................................11.1深海采矿输运软管力学行为分析的研究背景及意义................11.2深海采矿输运软管力学行为分析的研究现状......................21.2.1国外输运软管的研究现状.................................31.2.2国内输运软管的研究现状.................................31.3本文的工作..................................................41.4本章小结....................................................52.深海采矿输运软管静力学分析........................................62.1深海采矿系统组成............................................62.2输运软管静力学分析..........................................82.2.1浮力体对输运软管的作用力...