In this paper, ackerman steering linkage of double - wishbone suspension is taken as the study object, choosing the splitting joint and steering lever joint to carry out the design of optimization the mathematics models are established based on the multi - body system dynamics, applying its analysis method of kinematics to study the mechanism kinetic principles owing to more spatial factors considered, and calling off many hypotheses affecting the accuracy, compared with the traditional methods, the models are better to reflect the realistic motion principles, the results are more exact and applicable moreover, the force analysis is applied to the conduct mechanism the analysis method of dynamics in the multi - body dynamics is applied to study the forces applied on every component, working out the constraint reaction force of up and down ball joints, and developing the current computation program in the end, produce the upper wishbone geometry model in the ansys software package, meshing and carrying out the fea, testifying if the intensity of the wishbone meet with the requirements
本文以雙橫臂獨立懸架的轉向傳動機構作為研究對象，選擇對斷開點和節臂球銷的位置進行優化設計，在此基礎上建立了基於多體系統動力學的導向機構和轉向傳動機構的數學
模型，運用該學科的運動學分析方法研究機構的運動規律，編制了通用優化設計軟體。由於考慮了更多的空間因素，取消許多影響準確性的假設，因此建立的數學
模型與傳統的方法相比更能反映實際運動規律，得到的優化結果也更加精確實用。此外，本文還針對導向機構進行受力分析，在建立該機構的空間動力學
模型后，運用多體動力學中的動力學分析方法研究各個
桿件的受力，計算出上下球鉸的約束反力，並開發出了相應的通用計算程序。
Fist of all, on the basis of the research of agone boffins, this author investigates the interaction mechanism of bolts and rock, and introduces the elastic ? lastic analytical resolution which is consist of the liner structure, the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design. on the basis of coulomb friction model, the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc. marc. finally, combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction, the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts, and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports
首先，在前人研究成果的基礎上，對錨
桿與圍巖的相互作用機理進行研究，利用全長錨固錨
桿的中性點理論，從等效均化的角度來考慮錨
桿對圍巖的加固作用，並推導了在簡單荷載作用下，含有襯砌、等效加固后的圍巖、原始圍巖三者的彈塑性解析解，對工程設計有著重要的參考意義；在數值
模擬方面，以考慮錨固圍巖滿足規則化庫侖摩擦
模型為基礎，利用虛功原理推導了接觸問題的有限元方程的計算格式，為開發運用大型商用有限元軟體msc . marc提供了理論根據，也形成了本文的理論基礎：最後，論文以南水北調東線穿黃隧洞穩定性分析項目為工程實例，利用本文所述的接觸問題的摩擦
模型理論，對錨
桿支護結構的應力場、位移場的變化規律進行了研究，分析了加錨支護對隧洞圍巖應力、變形的影響。
The practical issue of drum brake with oversized overall stroke was resolved by experiments, and it indicates that major effect factors of air chamber overall stroke, which are the drum - shoe clearance, the elastic modulus of lining, the torsion deflection of cam shaft
研究結果表明，氣室推
桿總行程過大的主要影響因素為制動蹄與制動鼓之間的間隙、摩擦片的彈性
模量、凸輪軸的扭轉變形。
Carried on the optimized design using the optimized design module to the support, finally changed to 14 equal - angle iron to replace the used steel
利用優化設計
模塊對支架進行了優化設計，結果改用14號等邊角鋼代替原主弦
桿用鋼。
With the help of the electronic computers, engineers employ it to figure out nearly all kinds of engineering problems ranging from astronavigation, construction, waterpower projects, ship - building and mechanical engineering etc. owing to the strong power of finite element method, one kind of software pack which based on the method is exploited and named algor feas to resolve problems on structure analysis for trusses and shells. this paper also employ algor feas software pack to analyze and compute the cableway towers, giving the accurate result on stress and displacement both in location and whole. finally, we also bring out some advice on structure improving
在此分析過程中：首先將物理
模型簡化為力學
模型，主要是將塔架結構按空間
桿單元簡化為空間桁架結構，目的是將力學
模型變換為數學
模型；這一過程主要是利用autocad2000建立塔架的計算
模型；再者，利用algorfeas軟體包讀入autocad建立的塔架計算
模型生成初始數據卡利用計算機進行編程進行風載計算，再將計算結論整合入algorfeas產生的初始數據卡中，生成計算數據卡；接著，利用algorfeas軟體包計算塔架在不同載荷情況下的應力圖，位移圖，並且求出在不同載荷條件下的最大位移和最大應力等；然後，對塔架的穩定性進行分析；最後；根據計算結果提出改進建議。
Atomistic simulation of tension properties of nano crystal copper wire under surface effects
表面效應對納米銅
桿拉伸性能影響的原子
模擬
In the simulation, the mpc technique of msc. nastran is used to simulate the mechanical behavior of contact between the interfaces of piston pin and bearing of small end, crankpin and big end bearing, connecting rod body and bearing cap ; also constraints are applied to the connecting rod reasonably
分析中採用了patran中的多點約束（ mpc ）技術，有效地
模擬了活塞銷與小頭孔內表面、曲柄銷與大頭孔內表面以及連
桿體與大頭蓋接觸面的力學接觸狀態，並對連
桿進行合理的約束。
The calculation modes of the coefficient of shrinkage and creep of the bulgy core concrete in steel tube are discussed. based on a few reasonable hypotheses and the stress - strain relation of concrete acquired by the " adjusting valid modulus depending on load time " method, a compact formula is reasoned out, which is applied to calculate the equivalent elastic modulus of the bulgy core concrete considering the affection of shrinkage and creep. so, the analysis of the affection on cfst arch bridge by shrinkage and creep can be progressed by pole - girder fem, further more, the analysis precision is quite high
本文還對核心膨脹混凝土特殊的收縮、徐變系數計算
模式展開了探討，在合理的假設前提下，採用「齡期調整的有效
模量法」得到的混凝土的本構關系，推導出鋼管內核心混凝土在考慮徐變影響后的等效彈性
模量計算公式，並以此為基礎採用
桿系有限元方法來對鋼管混凝土拱橋進行較高精度的收縮徐變分析。
In the computation module, mindlin formula is applied to calculable the displacement of the rock ( soil ). based on the presumption that the rock ( soil ) and the anchor has the same displacement at the interface, the equation of displacement of rock ( soil ) and the anchor is made
在該計算
模型中，運用mindlin公式計算巖體位移，並基於在
桿體與巖土體接觸面上位移相等的假定與
桿體的位移建立等式，進而求出沿
桿體全長的剪力分佈。
Based on vc and opengl software platform, as a part of integrate planar mechanism analysis and simulation cai, the mechanism theory has been adopted to analysis the movement trace and profile of linkage ; adopt oriented object method to capsulate the class module. each corresponding class module complete parameter storage and process ; adopt message - map, message - trigger to organize the programming and response the user " s input ; use the document - view structure of the visual vc + + mfc class foundation as the basis of the programming architecture to complete those functions. use oriented object method to product the following class module : control class, render class, document class, mechanism class and other classes ; adopt opengl library to draw the three dimensional graph based on the result of mechanism analysis ; use model transforming, lighting, material, color, frame - buffer, display - list, graphics - component combine etc to draw the three - dimension mechanism and make the simulation of linkage has high reality
本文敘述了平面連
桿機構運動分析和可視化
模擬的理論演算法及其編程實現方法，基於微機vc平臺，採用opengl圖形庫編程，利用面向對象的方法對機構進行功能封裝，利用vc + +的文檔視結構作為最基本的窗架，生成並控制三維繪制類、文檔類、主窗口類和一些輔助類，利用windows平臺的消息映射、事件驅動來組織程序運行和響應用戶反饋，利用機構分析得出坐標數據驅動opengl庫繪制三維機構圖形。
In this study, iltv - nm98a strain and iltv - wanggang strain were multiplied in chorioallantois. a pair of primers were devised according to the nucleic acid sequence of iltv tk gene and the dna of multiplied virus was used as pattern to amplify the gene of tk by polymerase chain reaction ( pcr ). the product of pcr was linked with suitable plasmid. then, the recombined plasmid was converted to escherichia coli. the converted escherichia coli
根據已發表的iltvtk基因的核苷酸序列設計一對pcr引物，以增殖的兩株iltv的dna為
模板，分別對它們的tk基因進行pcr擴增。將回收的pcr產物連接到適當的質粒載體上，轉化感受態大腸
桿菌，通過篩選對iltvtk基因的陽性克隆進行擴增培養。
The existing theoretical analyses have n ' t refelcted this true mechanism of the force transfering in fixed segment of anchor bar. for the sake of studying the working course from elastic to elastoplasticity slide better, this paper put forward shear stress - displacement curve, and solve the internal force distribution along anchor bar by the basic equntion. at the same time, this paper analysize the difference of columniform fixed segment and the segmeng with anchor slab at the foot of anchor bar
為了更好的研究錨
桿在不同荷載作用下，錨
桿的工作狀態從彈性到彈塑性發展的整個過程，本文進行了錨
桿受力的
模型實驗研究，根據實驗結果提出了剪應力與位移的彈塑性本構關系表達式，並根據錨
桿受力的基本方程，求解得出了錨
桿在不同工作狀態下從彈性到彈塑性滑移的全過程中錨
桿的內力分佈。
Main products include suited offset point imprinter bearing sets comber gear for weaving industry metal mould and gear vacuum gear synchro gear worm worm wheel. acme whorl fitting and all kinds of fittings with various gears
主要產品：印刷行業各種膠印機和印后設備輪及軸承套，紡織行業精梳機輪，金屬板材壓延
模具和輪，真空泵輪同步帶輪蝸
桿蝸輪副acme螺紋副各種直斜錐及各種盤類和軸類件等機械加工件。
In mode 2, the right control stick operates the aileron and elevator and the left stick operates the rudder and throttle
在
模式2中，右邊的操縱
桿控制副翼和升降舵，左邊的操縱
桿控制方向舵和油門。
Application of strut - and - tie model to the design of corbel distributed steel
壓
桿模型法在牛腿配筋設計中的應用
Simulation based on matlab software for the hooke ' s joint driven shaft
八關節三動
桿蛇形機器人的運動
模擬
As - sbc contains a basic four - bar loop ( bfbc ) and a dyad. base on the distance of two common joints shared by the bfbc. and the dyad, the model of circuit identification is established
將stephenson六
桿鏈（ s - sbc ）看作由一個基礎四
桿鏈（ bfbc ）和雙
桿組組成，基於bfbc和雙
桿組的兩個公共副之間的距離，建立了s - sbc迴路識別
模型。
Die - casting die components - part 16 : flat ejector pin
壓鑄
模零件第16部分:扁推
桿
Components of injection mould for plastics - ejector pins
塑料注射
模具零件推
桿
Components of injection mould for plastics. ejector pins
塑料注射模零件.頂桿
