模擬地形 的英文怎麼說
中文拼音 [mónǐdexíng]
模擬地形
英文
artificially generated terrain-
Virtual reality is an advanced man - machine interface which allows the behaviors of the human being, such as viewing, listening and touching, to be conducted in a natural but virtual environment
虛擬現實是一種高度逼真地模擬人在自然環境中視、聽、動等行為的人機界面。圖形生成是虛擬現實的一項關鍵技術。The results show that : the surface temperature in the central beijing is 6 - 8 higher than that in the suburbs. due to the unique topography the wind of beijing area during the day time is southern anabatic wind and is northern katabatic wind in the night
模擬結果表明城郊之間存在明顯夏季熱島效應,市區和郊區的溫差最大可達68邊界層風場受西北特殊地形的影響,白天盛行由南往北的上坡風,夜間轉為由北向南的下坡風。In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後,對巖土工程領域至今尚未解決,甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討,提出了考慮地基變形的地基承載力上程計算方法;對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎(空間問題)的承載力界限荷載p _ ( 1 / 4 ) ,並與國內外土力學專著及地基基礎設計規范中的條形基礎(平面問題)的界限荷載p _ ( 1 / 4 ) ,進行了對比,從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況;根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作,本文以截頭錐模型模擬地基,對地基(巖基)承載力的動測法進行了研究,為各類地基(包括巖基) ,匯總了動力分析和檢測川的參數:針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題,從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論;本文作者根據多年現場載荷試驗的工程實踐,對深井荷試驗裝置的核心部分? ?反力裝置,設計了側壁支撐反力加載系統,該加載系統具有實用、簡便、穩定及安個等優點。The following are such theories and methods as nonlinear theory considering interaction between support and rock mass, which, based on quantity analysis technology and actual data of initial crust stress, can simulate complex geological condition, carven shape and supporting so that provide important reference for analysis of stability of rock mass around underground carven and design of supporting
隨之而來的是考慮支護與圍巖共同作用的非線性理論和方法。這些理論和方法一般都以數值分析為手段,以實測地應力資料為基礎,能模擬復雜的地質條件、洞室形狀及支護措施,從而為地下洞室圍巖穩定性評價和支護設計提供重要的參考依據。Based on studying of the unequal rainfall in space - time and the asymmetry physical geography parameters in space, which can influence the process of the runoff, this paper puts forward a sort of slope conflux and watercourse conflux simulating model based on grid, and that gains flux at random time and grid in basin
本模型針對降雨時空分佈不均勻與下墊面自然地理參數空間分佈不均勻,對產匯流形成過程的影響,提出了一種基於柵格的坡面產匯流與河道匯流的數值模擬模型。Using the rock resistivity meter with simulating in - situ conditions, the relations between rock resistivity and temperature were observed from 6 sandstone samples with different porosity and permeability, while samples were brine water - saturated and subjected to certain confining pressure. it is found that the resistivities of water - saturated rock samples decrease in the form of power expression with the temperature increase. although the resistivity of brine water decreases with temperature in the same rule, it can not entirely account for the decreasing of rock resistivity. the cementation factor
利用模擬地層條件巖芯電阻率測量儀,對6塊孔隙度滲透率各不相同的砂巖巖芯,在一定圍壓條件下,巖芯完全飽和鹽水時,考察了巖芯電阻率隨溫度的變化。發現飽和鹽水巖芯的電阻率隨溫度升高,以冪函數形式下降。雖然巖芯中飽和鹽水的電阻率同樣隨溫度以冪函數形式下降,但巖芯電阻率的下降不能完全用巖芯飽和鹽水的下降表徵。At last, the paper presented the visualization implementation of the under working state for a cutter suction dredging simulator in detail after a brief introductions of the basic knowledge of computer graphics science. this part includes terrain visualization, interactive operations between vr model and control panel, the profile system of the dredge working state and so on
在介紹完本文中用到的計算機圖形學的基本知識之後,文章詳細介紹了水下視景模擬的設計方案和實施步驟,這里包括虛擬地形建模、使用vc + + 6 . 0結合opengl開發應用程序、虛擬模型與控制盤臺的交互、疏浚作業剖面模擬等內容。Then above the typical terrain and under the disturbance the terrain following system is simulated. the result shows the flight control system can withstand the disturbance and track the optimal trajectory
在典型地形情況下進行地形跟隨模擬,並且為了真實模擬地形跟隨,在控制通道加入風擾動,結果表明該飛控系統能夠很好的抵抗風擾動,緊緊跟隨最優軌跡飛行。The application of transverse resonance theory is firstly extended further from plane homogeneous medium to the inhomogeneous spatial region by primarily combining the current martcatili method. then the simplex method is used to calculate the source point " s best position, frequency and the correspond wavenumber of the region
重點結合已有的marcatili法,首次將橫向諧振法從平面均勻分層介質中的應用進一步延伸到模擬地殼波導的三維非均勻空間區域中,再利用單純形法,確定源點在該區域的最佳位置、最佳頻率和對應的傳播常數。And a post - liquefaction test method has been put forward, in which the cyclic loading and the static loading courses are both controlled by stress mode. this method reflects the in - situ conditions well and truly, and a lot of tests have been done using this method. in these tests the effects of confining pressure, relative density, liquefaction severity etc. have been thoroughly investigated
主要工作內容如下:參與研製了振動扭剪全自動多功能三軸儀,並利用其獨特試驗功能設計了一套飽水砂土液化后特性的試驗方法,試驗過程中模擬地震作用的動加載過程及模擬大變形發生的靜加載過程均採用應力控制的方式進行,試驗方法跟現場條件更為接近並用該試驗方法對相對密實度、固結壓力、液化度等對液化后變形特性的影響進行了研究。This dissertation presented a simulation method for producing ideal echoed data based on the analysis of the point ideal echoed signal model, the 2 - d format of the echoed data and the feasibility of creating simulation geography map using bmp images for distributed targets. simulation results proved that this method is efficient and reliable for the study of imaging algorithms and validation of the system parameter settings
論文討論了系統點目標回波信號的理論模型,分析了回波信號的二維數據格式,描述了利用位圖圖像生成分散式目標模擬地形圖的方法,在此基礎上給出了一種理想情況下回波模擬數據的產生方法,用它來進行成像演算法研究及檢驗系統參數設置的合理性非常有效可靠。Several classical methods of interface element, soil behaviors and structure characters are presented in this paper. the author made great effort on the modeling of the interface element and the underground structure element, while considering the soil obey the mohr - columnb yielding principle, modified the existing beam element for solid rectangle pile and applies this element into thin - wall hollow pile, proposes a kind of board element. some examples are presented in the paper to test these new concepts and corresponding formulas
本文在總結已有的結構與土相互作用問題中的接觸面單元形式、土的本構關系以及結構的數值模擬方法的基礎上,對滿足摩爾庫侖屈服條件的土體材料用常規的薄層單元模擬進行了更加深入的驗證,在已有實心矩形截面樁與土相互作用描述模式的基礎上推導了薄壁筒樁用梁模擬時與土相互作用分析模式,和考慮與土相互作用時用板單元模擬地下連續墻的分析方法。In this paper involved several aspects about the inner and outer loops design for helicopter flight control system, maneuver flight simulation for helicopter, terrain following simulation and 3d animation flight simulation system designed with opengl
主要的內容包括直升機飛行控制系統內外迴路設計、直升機機動飛行的模擬、地形跟隨的模擬以及opengl三維動畫模擬等方面的內容。The two - dimensional statistical model of terrain is described by planar non - stationary random process and function w - m in topography. on the basis of the statistical model of terrain, the simulated digital maps are produced by computer
對模擬中用到的二維隨機過程和分形學中的w - m函數產生地形數學模型的方法做了討論,採用二維隨機過程的方法產生了數字模擬地圖。Implementation of the simulated terrain of 3d based on opengl
的三維模擬地形的實現Designs the framework of the 3d scene graph system based on the real - time simulation environment, introduces the multigen creator, vegaprime and the modeling method of the uav and the terrain, explains the model motion, the control of the angle of view and the data communication, summarizes the character of the scene graph system
在總體框架設計一章中設計了具有三維視景模擬的無人機半物理模擬系統結構,介紹了模型構造工具multigencreator和三維系統開發環境vegaprime ,闡述了無人機建模和地形建模的方法,說明了模型運動、視點控制和數據通信的實現方式,並概括了該系統的特點。Taken the poyang lake region as test site, we firstly build the lod models ( including terrain and culture feature data ) based on viewpoint. secondly, we adopt active surface definition, a real - time framework, to manage the terrain data, and then apply clip texture to efficiently manage the high - resolution textures. thirdly, the parallel processing technology is used to deploy the scene database dynamically and optimize real - time simulation graphics, which result in higher fidelity and better simulation effects in the virtual scene we finally built up
首先建立基於視點的lod模型(包括地形和地物) ,然後採用活動表面定義( activesurfacedefinition )這一實時架構來管理地形數據的調度,並結合剪切紋理( cliptexture )技術對高解析度紋理數據進行有效的管理,以及利用并行處理技術對場景數據庫進行動態調度管理和實時模擬圖形優化處理,從而建立真實感強、模擬效果佳的大規模虛擬場景,有效地解決了這一問題。In the pseudo static tests of the middle joint and border joint, the failure modes, the carrying capacity, the ductility, the hysteresis loops and the stress transfer mechanism of the src column and steel beam joints under seismic loads are researched, which are compared with rc beam - column joints and src beam - column joints
通過中柱節點和邊柱節點的擬靜力試驗,著重分析了勁性柱?鋼梁節點在模擬地震作用下的破壞形態、承載力、延性、滯回特性與應力傳遞機制,並與鋼筋混凝土節點、勁性混凝土節點進行了比較。Using the latest techniques in laser scan and computer technology, prof ruther and his colleagues are creating three - dimensional models and virtual landscapes of several unesco world heritage sites
使用最新的雷射掃描科技和電腦科技,路德教授和他的同僚創造出數處聯合國教科文組織世界遺產的3d模型和虛擬地形。Through analyzing the functions of the simulator, it is reasonable to adopt a programmable computer controller pp41 developed by b & r company as the simulating platform
通過分析模擬儀的功能,考慮實時性、輸入輸出量的實現和模擬圖形顯示等特點,採用奧地利b & r公司的帶有面板功能的可編程計算機控制器pp41作為模擬硬體。分享友人