geometry evaluation 中文意思是什麼

geometry evaluation 解釋
幾何形狀評定
  • geometry : n. 1. 幾何學。2. 幾何形狀。3. 幾何學著作。
  • evaluation : n. 1. 估價，評價。2. 【數學】賦值，值的計算。
  1. A new method for evaluation of geometric properties of plane geometry

    平面圖形幾何性質計算的一種方法
  2. The manufacturability includes many aspects, such as geometry structure of parts, the rationality of the tolerance specification, fixturability and the assemblability etc. in the research, the main research topics are focused on the following aspects : the study on the incremental evaluation approach during the detailed design process, the study on the entireness evaluation after the design has completed and the study on the fixturability evaluation of the machined parts for modular fixture

    本文的研究內容主要涉及以下幾個方面：詳細設計過程中的可製造性逐步評價方法、基於簡化加工工藝規劃的整體可製造性評價方法、面向組合夾具的零件可裝夾性評價方法等。在本研究中，零件的設計方案以b _ rep實體模型表示，零件的公差和表面質量以實體模型中各個相關面的屬性表示。
  3. Based on the fractal geometry theory, this paper constructed the fractal geometry of road network, and applied the hausdorff dimension to the overall evaluation of road network

    摘要基於分形幾何學理論，構建了公路網的分維數概念，並將其應用於公路網規劃整體性評價。
  4. Based on the feature technology and object - oriented mechanism, we found the manufacture - oriented three levels ( namely part, feature and geometry ) model of mechanical part and the resource model ; secondly, we realize the concurrent design of mechanical part and process through decomposing cycle, and then we constitute the evaluation guidelines on the basis of evaluation strategy of levels, which carry out from two levels ( part and feature ) and four phases ( part rough evaluation, feature rough evaluation, feature detail evaluation and part general evaluation ) ; thirdly, we put forward some evaluation methods according the evaluation guidelines, which include the rule - based process evaluation method, rule - based and fuzzy evaluation - based method associated with resources, case - bas ed and feature - based cost estimation method ; at last, we give a manufacturing - oriented evaluation system of rotating mechanical part, which validate the evaluation guidelines and method of the dissertation useful and practical

    以特徵技術為基礎，面向對象的編程機制為手段，建立了面向製造的三層次（即零件層、特徵層、幾何層）零件模型；同時進行了面向製造的資源建模。第二，通過細化循環，採用分層遞階的評價策略，分兩層（零件層和特徵層）四個階段（零件初評價、特徵初評價、特徵詳細評價和零件總體評價）建立可製造性評價指標；第三，以評價指標為基礎，分別提出了基於規則的結構工藝性評價方法、基於規則和模糊綜合評判定性和定量相結合的加工可行性評價方法、以及基於實例和特徵的加工成本估算方法；最後，以solidworks為開發平臺， vb6為編程工具，初步構建了面向製造的回轉類零件可製造性評價系統，它們驗證了本文評價指標和評價方法的實用性和可行性。
  5. To master in time the status of railway track geometry under repeated train loads, modem track inspection car and computer processing techniques are adopted to inspect it and evaluation standards concerned are established in many countries

    摘要為了及時掌握列車反復荷載作用下的軌道幾何形位狀態，各國鐵路管理部門都採用了現代軌檢車和計算機處理技術來監測其變化情況，並制定了相應的評價標準。
  6. After the evaluation of the three parameters in the proposed creep model, which is based on the large numbers of experimental measurements of concrete creep, the influential regularities of concrete filled steel tube columns under long - term loading are investigated. by dispersing time, the method of tangent modulus is adopted to study the relation of creep strain and load time. in the end, this paper took cft specimens with representative geometry and sectional dimensions as examples and adopted the proposed method as an approach to investigate the influencing regularities of many factors, which include the ratio of long - term load to strength, the slenderness ratio, the eccentricity ratio, and the intensity grade of concrete, on cft structures

    在對鋼管混凝土構件長期荷載效應的分析中，本文基於三維粘彈性理論，採用三參數粘彈性模型，提出了核心混凝土徐變的三維有限元分析理論，在總結過去大量關于混凝土徐變試驗實測結果的基礎上擬合了模型中的三個參數，並成功將其應用於鋼管混凝土徐變的三維分析計算中，得到徐變與持荷時間的關系，以典型截面形式的圓鋼管混凝土軸壓、偏壓構件為例，對軸壓比、長細比、含鋼率、偏心率以及核心混凝土等級分別進行了大量的參數分析和實驗對比研究，結果表明二者符合較好。
  7. At the meantime, the rock mass may alternate between loading and unloading and it exists in certain kind of liquid, such as surface water, unconfined water, confined water etc for its intrinsic crannies. the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security, economy, feasibility and validity. however, the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation, the corresponding structure design must ensure enough safety with all the determinate or random force combination, so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress, for the simulation of the real process and for the determinate evaluation system and optimization

    由於實際工程巖體其固有的非線性和復雜性，使得求解對應的諸如其穩定性、變形等問題面臨較大的困難，而有關的工程結構的設計必須保證該結構在外來因素的作用下具有足夠的安全度、經濟性和合理性，這必然要求對巖體及其工程結構的受力與變形有一套量化評判體系和優化技術，抓住實際工程問題的本質特徵並建立可行的符合幾何模擬、本構模擬、受力模擬、過程模擬四原則的求解模型，通過該模型的數值模擬成果來指導巖體工程的設計、施工及運營、管理；而巖體結構面的存在使得基於傳統連續介質力學理論的理論分析和數值模擬面臨巨大的挑戰，物理模擬的試驗周期和成本也大大增加，而巖土體工程問題則成為典型的數據有限、了解程度有限類問題，這類問題的解決需要綜合應用理論分析、經驗判斷、物理模擬和數值模擬等方法，數值模擬可以完成目前許多技術手段無法完成的實驗，如參數控制，復雜條件下的邊界條件的處理，同時數值模擬具有高可重復性，且數值模擬的成本和人力開銷等遠低於物理模擬，因此研究巖土體工程問題的流形元數值模擬方法是一項具有理論和實際工程應用價值的重要課題。
  8. This paper has a further study on the key technology called validity maintenance mechanism in semantic feature modeling in order to maintain the intent of designers and satisfy them. the method combines geometry model and semantic feature modeling, setting up new feature representation 、 cell element naming and identification method. in the meantime, a history - independence interactive feature boundary re - evaluation algorithm is presented based on feature editing. moreover, the validity recovery mechanism after invalid feature operation can maintain the original feature model. the above ideas have been realized on hust - caid ( computer aided industry design system developed by harbin university of science and technology ) preliminarily

    為了能夠正確地維護設計者的設計意圖和滿足用戶的需求，本文在原有造型的基礎上對語義特徵造型中的關鍵技術即有效性維護機制進行深入的研究，將幾何模型，語義特徵模型結合起來統一進行研究，建立了語義特徵造型在產品模型設計過程中特徵表示方法的新理論、細胞元素命名方法和辨別機制，同時對系統原有特徵編輯過程進行了研究，提出了獨立於歷程樹的特徵邊界重構演算法以及模型操作無效時的有效性恢復方法。
  9. At first, the model about information requirement in manufacturability evaluation is set up. based on the feature technology and object - oriented mechanism, the manufacture - oriented part model with three levels ( namely part, feature and geometry ) and the resource model is build ; secondly, the evaluation guidelines on the basis of evaluation strategy of fining with levels is constituted ; thirdly, an evaluation method according the evaluation guidelines is put forward, which is the rule - based and fuzzy evaluation - based method associated with resources. fourthly, a manufacturing - oriented evaluation system for machining blade part is built

    以特徵技術為基礎，面向對象的編程機制為手段，建立了面向製造的三層次（即零件層、特徵層、幾何層）零件模型，同時進行了面向製造的資源建模；第二，採用分層逐步細化的評價策略，建立可製造性評價指標；第三，以評價指標為基礎，採用基於約束規則和模糊綜合評判的加工可行性評價方法；第四，以ug為開發平臺， vc6 . 0為編程工具，航空發動機葉片為應用對象，初步構建了面向製造的葉片類零件的可製造性評價系統。
  10. The geometry compatibility evaluation of aircraft cockpit plays key role in the efficiency of pilot - cockpit system and flight safety

    摘要飛機駕駛艙人機幾何適配性評價對于保障人機效能的充分發揮和飛行安全至關重要。
分享友人
分享到 Line

分享到臉書