荷載應變圖 的英文怎麼說
中文拼音 [hézǎiyīngbiàntú]
荷載應變圖
英文
load-strain diagram-
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。The dynamic force - displacement relation curve is of crucial important to the design and operation of mechanical impact devices. using one - dimensional wave mechanics and characteristic line theory, this paper presents a testing method for determination of dynamic force - displacement relation curve from one - point strain measurement on an elastic rod endface. the principle of measurement, data processing method and experimental results for penetration into granite are discussed. 4figs., 5refs
沖擊載荷下彈性桿端的作用力-位移關系曲線是沖擊機械繫統研究的重要內容.基於一維波動力學方程，應用特徵線方法，探討了已知一點應變求取彈性桿端的作用力-位移曲線的測試原理與數據處理方法，以及在花崗巖上沖擊鑿巖機具的測試結果，對一點應變測試法的可行性進行了論證.圖4 ，參5The damage parameter versus fatigue life figures, which were plotted based on the stress - strain analysis and test results, could be used to predict the fatigue lives of the composite with different winding angles
根據雙軸載荷條件下管狀試樣的應力-應變分析及雙軸疲勞實驗結果，繪制出了基於臨界平面的多軸損傷參量與疲勞壽命關系圖，可對不同纏繞角的復合材料疲勞壽命進行預測。The obtained results has been shown that the temperature field of sfrc pavement structure is non - linearly distributed along its thickness. the temperature which is close to the surface changes quickly, whereas slowly which is far. under the affect of temperature field, the temperture stress of sfrc pavement structure is also distributed non - linearly. the deflection and stress responses of sfrc pavement structure are waved declingly under the effect of shock load
計算結果表明：鋼纖維混凝土路面板結構的溫度場沿其厚度方向呈非線性分佈；在距路面表面較近的地方，溫度變化較快，而在距路面表面較遠的地方，溫度沿厚度方向的變化較為緩慢，整個圖形呈下凸形。鋼纖維混凝土路面板在上述溫度載荷的作用下，其溫度應力沿其厚度方向呈非線性分佈。Author thinks that the direction of the maximum plastic distortion along a constant radius around the crack tip may be considered as the direction of shear - mode fracture ( named pmax - criterion ) and the load when located shear band prongs the ligament in the front of crack tip is regarded as the limited load of shear - mode fracture. ( 3 ) the fad ( fracture assessment diagram ) of titled crack is proposed based on achievements of mesomechanics about i - ii complex ductile fracture of metal, and the titled crack is classified two kinds : void - mode fracture is assessed by fracture assessment curve, and shear - mode fracture by limited load. ( 4 ) using a fe program based on plantle - ressue theory to calculate some mesomechanical parameters, a flange joint structure of a high pressure vessel ( design pressure 31. 4mpa and the thickness of the hemispherical head is half of that of shell. ) is analyzed to determine whether the structure under operation pressure is safe or not, forecast the mode of potential invalidation and argue for the rationality of design of the structure
試件的整體斷裂為剪切型，但在試件芯部裂尖鈍化區中部出現了韌窩型啟裂並有一定的擴展，說明局部較高的應力三軸度也會使韌窩型機制得以發展，但是不改變試件整體的剪切型斷裂模式；對韌性斷裂的剪切模式的細觀機理做了一定的探討，並且提出了含裂紋構件剪切型斷裂的宏觀判據：認為裂紋前方的集中剪切帶中與裂紋尖端等半徑處最大有效塑性應變出現的方向可以作為裂紋剪切斷裂的方向（可簡稱為_ （ pmax ）準則） ，集中剪切滑移帶貫穿裂紋前方承載韌帶時的載荷可以作為極限載荷；本文運用金屬韌性斷裂細觀力學在一復合型韌性斷裂方面的研究成果，採用失效評定圖的形式，提出了傾斜裂紋的安全性評定方法的基本框架。Firstly, the paper introduces the development and application of computer graphics & image technique, discusses the principle and method of cg and digital image processing, such as matrix of the graphic transformation, homogeneous reference frame, sampling and quantization of the image, file format of the image, template operation, etc. secondly the paper introduces the purpose and method of image enhancement processing, explains the each occasion of those methods such as threshold transformation, smoothing processing, sharpening processing, analyzes and contrasts the processing results of object image. thirdly, the paper introduces the method of mathematics morphologic, edge detection and thinning processing, attains character description of image and character dots of the contour. fourthly, the paper processes the coordinate transformation to character dots and basic splines fitting, imports correlative condition to devise meshing line and meshing track
本文首先介紹了計算機圖形圖像技術的發展與應用情況，對計算機圖形學和數字圖像處理的一些基本理論和方法如圖形變換矩陣、齊次坐標系、圖像采樣和量化、圖像文件格式、模板操作等內容進行了討論：然後對圖像增強處理的目的和方法進行了介紹，對諸如閥值變換、平滑處理、銳化處理等方法的應用場合進行了說明，並對實物圖像的處理結果進行了分析與比較；接下來介紹了數學形態學方法、對增強后的圖像進行邊緣檢測的方法和圖像的特徵描述方法，並獲取輪廓的特徵點：隨后對獲取的特徵點進行坐標變換，並進行b樣條曲線擬合，引入相關條件生成齒輪副的嚙合線及嚙合軌跡：最後引入等值線和區域填充表示方法，並以等值線和區域填充的形式對弧齒錐齒輪嚙合模擬的載荷分佈情況進行了直觀的表示。The pmma ' s craze damage is observed on line in different temperature and invariable load, which show that the change pricks up with the increase of time and temperature. with the disposal of the image, we get a changing rule that the change of the sample of pmma ' s surface crazing damage density follow the change of time and stress. then the data from experiment is to match in non - linearity, pmma ' s density of crazing damage changing with time and stress is available
對pmma在恆定荷載作用下，不同基溫下的pmma銀紋損傷進行了實時在線觀測，結果表明： pmma試件的銀紋隨持荷時間增加，而且隨著溫度的升高，可以加劇這種銀紋隨時間的變化；經圖像處理，得到了不同基溫下、不同應力水平下， pmma試件銀紋損傷面密度值；進而，對所得數據進行非線性擬合，得到pmma試件銀紋損傷密度隨時間演化規律，以及應力水平依賴性； 3The data used by calculation program and post - processing are formed by dialog boxes, and fed back by figure. a finite element program which considers the influence of axial deformation can analyze the prestressed concrete frame structure, then the structure is designed according to the code of concrete structure gbj10 - 89. post - processing can give the result of calulation by text file and graph, and plot construction drawings in autocad
前處理模塊通過對話框採集數據來建模，並利用圖形反饋建模結果；計算核心利用考慮了軸向變形的桿系有限元程序計算荷載效應和預應力效應，並按《混凝土結構設計規范》 gbj10 ? 89計算承載能力極限狀態和正常使用極限狀態；后處理模塊通過文本文件和圖形顯示來完成結果查詢，並直接在autocad環境下生成施工圖。分享友人