限界法 的英文怎麼說
中文拼音 [xiànjièfǎ]
限界法
英文
bound method-
Introducing the theory and application of boundary element method on the sound radiation, giving the process of solving vibration noise radiation problem using boundary element analysis software ; presenting the coupling theory and the combination analysis of finite element method and boundary element method, and doing relevant analysis based on close drum shell ; programming the noise data simulation program using the numerical calculation software, simulating the acoustic and pressure data of a key point in the transient response acoustic field of the close drum shell, realizing the audibility of the noise, using the virtual reality tools to simulate the vibration noise of the drum shell ; combining the finite element method and boundary element method to analyze the vibration noise radiation of some gear box, and completing the whole simulation process of the vibration noise of the gear box
綜合介紹了邊界元法在聲輻射問題上的理論及應用；並給出了運用邊界元法分析軟體求解振動聲輻射問題的過程。闡述了有限元法和邊界元法的耦合理論及組合分析方法，並以封閉鼓形薄殼為分析對象進行了相應的分析。利用數字計算軟體編制了噪聲數據模擬程序，並模擬了通過組合方法分析封閉鼓形薄殼瞬態響應聲場而獲得一關鍵點的聲壓數據，實現聲音的可聽化，隨后通過虛擬現實工具實現了該情形下橢球殼振動噪聲的虛擬模擬。In feature matching, a dot pattern matching method is developed, which combine subschema matching method for solving rotations and scale changes problems, and employ variable bounding box to solve translations problem. then the problems of arbitrary translations, rotations, and scale changes in feature matching have been well
特徵匹配演算法採用了基於點模式的匹配方法，並結合基於結構的匹配方法解決圖像的旋轉、平移問題，同時採用可變限界盒方法解決圖像的變形問題，使得指紋圖像匹配中因圖像旋轉、平移、形變等帶來的問題得到了較好的解決。A great significance of this article is that it changes the branch and bound algorithm and backtracking algorithm into application examples of the generic search algorithm of optimal problems advanced in this article
本文的一個重要意義是將回溯法和分支限界法這兩個傳統的演算法策略轉變為本文所提出的通用搜索演算法的應用例子。In this paper, the bend stress of engine crankshaft was analyzed by the finite element method ( fem ). an one - fouth crankthrow fe model is used to analyze it taking different boundary conditions into account
本文用有限元法計算分析了發動機曲軸的彎曲應力。採用1 4曲拐有限元模型對不同邊界條件進行了研究，計算了安全系數。According to eigenvalue equation ( general formula ) of the energy method of the plane steel frame structure stability, and considering the restriction of the end of the column of the main steel frame and function of deflection curve gained from the differential balance equation general resolution, we get the equation for calculating the length coefficient of the main frame structure stability of the steel arch gate and the resolutions are also given
根據平面剛架穩定性能量法特徵值方程（通式） ，考慮弧形鋼閘門主框架柱的柱端約束的特殊情況，求出撓曲線函數（試解函數）通解，得到弧形鋼閘門主框架柱穩定性計算長度系數方程。其中弧門主框架主橫梁式形框架的臨界荷載比較現行規范推薦的有限元法簡單方便、結果精確及物理概念明確等優點。Fist ly, use mass equivalent method to predigest the original rotor system. secondly, use transfer matrix arithmetic to have finished the relative program to calculate the critical speed of flexible multi - tray rotor bearing system by matlab language. thirdly. finish program the unbalance response using riccati - transfer matrix arithmetic and finity buck arithmetic. fourthly, answer to the high vibration of uncontroled system when cross the critical speed, come out to adopt changing clearance damper bearing to control the viberation
本文對多柔盤轉子-支承系統的振動現象做了以下初步探索：用質量離散化方法把原轉子系統簡化；採用matlab語言編制了對傳遞矩陣法計算多柔盤轉子-支承系統的臨界轉速；用matlab語言對riccati傳遞矩陣法和有限元法編制了程序計算系統的不平衡響應；並針對其過臨界轉速時振動較大的現象，提出採用變間隙控制油膜剛度和阻尼，從而使原系統的在特定轉速（臨界轉速）的一段范圍內不平衡響應減小；並從被動控制與主動控制兩方面進行數值模擬，取的了較好的控制效果。Finally, an energy approach is combined with the fem in the simulation of the crack propagation along the fiber / matrix interface in a pull out process. the simulated results are in nice conformity with experimental results. the second part of the research deals with the characterization of the failure process in the fragmentation tests, which is one of the most frequently used test methods in studying thermal mechanical properties of fiber / matrix interfaces
在這一部分工作的最後，採用能量法與有限元法結合起來，模擬纖維抽拔試驗中裂紋的擴展:針對以往研究工作中的不足之處，在模擬中使用能量釋放率，在表徵界面破壞時，所使用的應力強度因子考慮了纖維和基體兩種材料的不同屬性，並考慮裂紋尖端的單元奇異性，來研究裂紋長度和溫度對裂紋擴展的影響。Here, fem is applied in the analyses of i ) fiber axial stress and interphase shear stress in fragmentation tests during initially applied strain, ii ) influence of temperature on the stress transfer across the interface, iii ) modulus and thickness of the interphase and their influence on interfacial stress transfer, iv ) interfacial debonding process, and v ) fragment aspect ratio, contact friction along the interface and their influences to the interfacial stress transfer efficiency
在論文的這部分工作中，使用有限元法描述和分析了逐節斷裂試驗中初始應變下的纖維軸向應力和界面相剪切應力，溫度對界面應力傳遞的影響，界面相模量和厚度、纖維節長寬比、界面脫粘過程、界面接觸中的摩擦效應等因素對逐節斷裂試驗中應力傳遞的影響。This paper presents an approach to perceptually extract multi - oriented text lines from online handwriting. the approach adopts a bottom - up strategy. by the approach, strokes are first merged into blocks analogous to words, then a link model is constructed upon these blocks. finally, the optimal text line layout is found out by a branch - bound search on the link model. the experimental results show that the approach is effective and also available to extract curved text lines
提出一種多方向手寫筆跡文本行的提取方法.該方法以視覺感知理論為基礎，採取自底向上的策略，先將筆畫組合成類比字元的筆畫塊，然後基於這些筆畫塊建立鏈接模型，最後採用分支限界搜索演算法從鏈接模型中找出最優行排列.實驗結果表明，該方法能有效地提取多方向筆跡行結構，並適用於彎曲文本行的提取From internal classification, external limitation, grammatical functions and category meanings, the thesis expounds some specific grammatical function attributes of chinese onomatopoetic words, which should not be ignored
摘要本文從漢語擬聲詞的內部分類、外部界限、語法功能、類別意義等角度論述了它不容忽視的獨特的語法功能屬性，探討了擬聲詞的一些不大為人們注意的本質問題。( 1 ) systematic triaxial compression tests are made for the sand reinforced by various national geosynthetics. comprehensive investigations into the interaction characteristics are also made between sand / lime fly ash and various national geosynthetics by direct shear tests and pull out tests, which can help choosing geosynthetic type and understanding the geosynthetic reinforcement mechanism ; ( 2 ) this paper is also firstly systematically presents the results of a comprehensive investigation into the interaction characteristics between lime fly ash and various national geosynthetics ; ( 3 ) by non - linear fem, the influence of the modulus of geosynthetics, the thickness of the soft ground and the width of the foundation on the effectiveness of geosynthetic reinforcement are also studied ; ( 4 ) the main conclusions are as followed : ( geotextiles are likely to be suited for projects allowing high displacement, polyester warp knitting geogrids and oriented geogrids for projects allowing medium displacement, glass fiber geogrids for projects allowing low displacement and geonets for secondary projects. ( the confining effect of fill material to act on different kinds of geosynthetics varies largely, which must be considered
（ 1 ）本文利用三軸壓縮試驗，比較各種國產土工合成材料對砂土的加筋效果；利用直剪試驗和拉拔試驗，比較各種國產土工合成材料與砂土或石灰粉煤灰的界面摩擦特性，深入研究土工合成材料的加筋機理，首次明確提出加筋土工合成材料的選型原則； （ 2 ）本文首次系統地研究了石灰粉煤灰與各種國產土工合成材料的界面摩擦特性； （ 3 ）本文採用有限元法，系統研究了加筋模量、軟土地基厚度、基礎寬度等因素對土工合成材料加固軟土地基效果的影響； （ 4 ）本文主要結論如下： （無紡土工織物適合用於允許大變形的加筋土工程；滌綸纖維經編土工格柵和塑料拉伸土工格柵適合用於對變形有較嚴格要求的加筋土工程；玻璃纖維經編土工格柵適合用於對變形有嚴格要求的加筋工程；土工網適合用於低等級的加筋土工程。In this paper, temperature distributions of buried cable were analyzed according to the knowledge of heat transfer, after constructing heat conduction equation and boundary condition, temperature distributions were calculated with the finite element method in which the grids divided into a triangle format
摘要結合傳熱學知識對地下直埋電纜溫度場進行分析，構造出熱傳導方程和邊界條件后利用有限元法計算了地下電纜的溫度場分佈，計算區域採用三角形單元剖分法。Controversy in academe is only aimed at provisions in criminal law and never touches the theory behind said crime, there is still not a clear understanding of said crime
刑法學界對此的爭論一般只是局限於法條分析，沒有深入到理論背後，許多問題還沒有討論透徹就中止了。It also illustrates the differences between the crime of the illegal business operation and other similar crimes, which include the borderline between the crime of illegal business operation and the smuggling crimes, the borderline between the crime of illegal business operation and the crime of dealing official documents, certificate and stamps, the borderline between the crime of illegal business operation and the crime of the production, sale of counterfeit commodities
闡述了非法經營罪與非罪的界限，包括非法經營犯罪行為與正當經營行為的界限；非法經營犯罪行為與一般非法經營行為的界限。也闡述了非法經營罪與其它近似犯罪的區分，包括與走私罪的界限；與買賣國家機關公文、證件、印章罪的界限；與生產、銷售偽劣商品罪的界限等。Considering that the characteristics of our country ' s highway tunnels are always of long spans, tabular and of various geometry, by means of thorough analysis of the different problems existed in the design of support structures of the tunnels at present, this paper pays special attention to the two key problems, optimization method of form selection of structural section of the tunnel as well as the stability and bearing capacity of the support structures, in the design of the long and large tunnel on high - class highway, introduces the simplified complex - form optimum method in the structure optimization theory, discusses the optimum design model of lining section of highway tunnel with satisfying demands in building clearance, ventilation and load conditions, puts forward an optimization method of form selection of three different kinds of lining sectional forms ( i. e. single - center circle, three - center tabular circle and three - center sharp circle ), establishes a complete set of systematic optimum design the ory and method of long and large tunnel on high - class highway, develops the corresponding computer software used on the planned xuefeng mountain highway tunnel on shaoyang to huaihua expressway in hunan province for optimization of form selections of the structural sections, and obtains a series of relatively reasonable structural design parameters
本文針對我國公路隧道多為大跨度、扁平、幾何形狀呈多樣化的特點，通過深入分析目前隧道支護結構設計中存在的各種問題，抓住高等級公路長大隧道設計中隧道結構斷面的優化選型及隧道支護結構的穩定性與承載能力兩個核心問題，引入結構優化理論中的簡易復合形優化方法，深入探討了滿足建築限界、通風條件、受力狀態約束等條件下公路隧道襯砌斷面優化設計模型，提出了三種襯砌斷面形狀（單心圓、坦三心圓和尖三心圓）的優化選型方法，建立起一套完善的高等級公路長大隧道的系統優化設計理論與方法，並開發出相應的計算機程序，用於擬建的上海至瑞麗國道主幹線湖南省邵陽至懷化高速公路雪峰山長大高速公路隧道的結構斷面優化選型，得出了一系列較為合理的支護結構設計參數。2. eigenequation about singularity, singular stress fields and electrical displacement fields near the axisymmetric interface edge of two bonded dissimilar transversely isotropic materials are obtained under axisymmetric distortion. 3
然後，考慮電學物理量的影響，將上述特殊有限元法應用於壓電/壓電以及壓電/彈性接合材料界面端奇異性的求解。Searching of the state space is always being one of the usual ways for solving the optimal problems. the traditional ways of finding solutions only have backtracking, branch - and - bound and implicit graphs search as their theoretical introduction
狀態空間搜索是解決優化問題的常用方法之一，傳統的狀態空間搜索求解技術有回溯法和分支限界法以及隱式圖搜索這些演算法策略作為理論指導。In order to make full use of advantages of high stress precision in iem and wide use of fem, zonal fem - iem is constructed to establish a foundation of method in viscoelastic interface mechanics
為充分利用界面元法應力精度高、有限元法適用范圍廣的優點，還建立了分區界面元-有限元法列式，為粘彈性界面斷裂力學分析奠定了方法基礎。The solution of the interior problem has been obtained by the fem method. ensuring the continuity of the tangential electric field across the aperture plane, the electromagnetic e and h has been gained
分別採用有限元法和矩量法分析封閉腔體和半無限空間的電磁場，在孔徑面上進行邊界條件匹配，從而得出極化雙工柵中的電磁場特性。For spatial, ideal elasto - plastic girder - pane structure system, using the stochastic finite element method, the static response of structural system is analyzed. taking redistribution of internal forces into account, safety margin functions of failure modes are established. using the advanced branch - and - bound method, the significant failure modes are identified, and the reliability of structural system is evaluated by pnet method
對空間理想彈塑性梁板體系結構，採用隨機有限元計算結構系統的響應量；考慮內力重新分配，建立失效模式的安全余量方程，用驗算點法計算失效模式安全余量的可靠性指標；用改進的分枝限界法，尋找主要失效模式：然後用pnet法計算結構系統的可靠性指標（或失效概率） 。分享友人