擬塑性區 的英文怎麼說
中文拼音 [nǐsùxìngqū]
擬塑性區
英文
pseudoplastic region-
Based on the analysis of mechanism for joint region, the " frame - wall " and " aslope compression stub column " mechanical models and yielding patterns of core zone of the joints are set up. the shear load - carrying formulation for joint core zone is also given in terms of plastic ultimate analysis. and then, the comparisons between the formulas given in this paper and that of chinese design code ( draft ) and nonlinear fem as well are presented
對節點核心區的抗剪，通過受力機理的分析，建立了鋼「框架剪力墻」加混凝土「斜壓短受力體系及其屈服機制，根據塑性極限分析，給出了節點核心區抗剪承載力計算的迭加公式， 《規程》公式和非線性有限元近似模擬分析結果進行了比較。Based on the regional structure dynamics analysis of the lithosphere imbricate structure in lanping - weixi area, the middle section of three - rivers area ( n26 - 28 ), the bouguer gravity anomaly of deep structures was completed and the fractal of these faults was calculated. the geology structure model and the elasticoplastic three - dimension finite - element mathematic are described, made and calculated ; and physical simulation was accomplished
針對三江中段n26 - 28蘭坪-維西地區的巖石圈正交疊加構造的區域構造動力學分析，進行了深部構造的布格重力異常延拓處理和淺部的斷層分維計算，描述、製作計算了地質結構模型、彈塑性三維有限元數學模型和物理模擬。From the feature of the force and deformation of the tpih, 5 different elements are used to mesh the different zones of the tube, which are structural beam 3d elastic 4, structural pipe plastic straight 20, structural pipe elastic elbow 18, structural shell elastic 4 node 63 and contact 3d pt - to - surf 49 ; the contact problem is assumed to be flexible - to - flexible ; the temperature field is assumed to be body load. a mechanical model corresponding to reality has been established for numerical simulation. based on the above, the 3 - d fem numerical simulation of tpih has been carried out by using the ansys program
針對加熱彎管過程的受力和變形特點，採用三維梁單元、三維塑性直管單元、三維彈性曲管單元、三維殼單元與三維點對面接觸單元等5種不同的單元分別對管毛坯不同區域進行劃分，並對接觸單元採用柔體-柔體的處理方法，將溫度場作為體載荷處理，建立了符合實際的加熱彎管問題數值模擬力學模型：在此基礎上，應用商用軟體ansys對加熱彎管過程進行三維有限元模擬與研究，獲得了成形時推力、彎矩、支撐力大小及其變化趨勢。Relating closely to the main problem of the high sidewall and wide span underground cavities excavation stability of xiluodu hydroelectric project, the evolution characters of geo - stress field in deep - cutting gorge and the whole features of the stress field, strain field and plastic failure zone around the underground chambers after excavation are studied systematically in the dissertation, based on a great deal of data gathered in field investigation and taking the flac3d v2. 0 software as basic computation tools. meanwhile, in the course of research, the new methods of dynamic numerical simulation are summarized and applied. furthermore, the effects of rock mass qualities, initial geo - stress field and excavation procedure on surrounding rock mass stability are discussed
本文緊密結合溪洛渡水電工程大跨度、高邊墻復雜地下廠房洞室群，施工開挖過程中和開挖后圍巖穩定性研究這一重大課題，在詳盡的野外地質調查工作和對大量基礎地質資料的整理與分析基礎上，以目前國際工程地質界公認的最新通用軟體flac ~ （ 3d ） 2 . 0版作為基本計算工具，從整個壩區地應力場的研究開始，通過動態數值模擬分析這一新的模擬思路，系統地研究了深切峽谷區地應力場多階段的特徵和演變規律，進而對左、右岸地下廠房洞室群開挖全過程中圍巖應力場、變形場和塑性破壞區的變化特徵，進行了全過程動態數值模擬研究，並詳細討論了圍巖質量、初始地應力場、施工開挖順序對大型地下洞室群圍巖穩定性的影響。During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中，模擬結果表明，保壓時間是影響製件成形質量的關鍵因素之一，擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大，需進行參數之間的協調，只有當變形區內部始終維持準固態時，才能實現穩定的液-固擠壓成形過程；在變形場的模擬中，根據液態浸滲擠壓的成形特徵，選用了雙曲正弦剛-粘塑性有限元計算模型，研究了變形過程中應力應變場的變化規律，研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。Non linear static & dynamic finite element procedure is adopted for the true emulation of the four typical geologic profiles of the dam, and imitates to compute the each stage deformation and stress distribution from the dam fill to full water run and during the 7 degree seismic intensity, the article also imitates to compute the response to earthquake force, the excess vibration pore water pressure distribution and permanent deformation, predicting the occurrence possibility of the crac ^ plastic zone and earthquake liquefaction
採用非線性靜、動力有限元分析程序對圍壩的4個典型剖面進行了靜、動力模擬模擬，模擬計算了壩體自填築至蓄水運行和發生7地震各階段壩體及壩基的變形以及應力分佈，地震應力響應和地震引起的超靜振動孔隙水壓力分佈以及永久變形。判斷了壩體和壩基中出現裂縫、塑性區以及地震液化的可能性。Secondly, in view of the limitation and shortage of traditional simulation of finite element approaches for bolt, a new composite grouted bolt element including nonlinear contacting relation will be built based on the above study of the mechanics mechanism of fully grouted bolt. then, an elastic - plastic finite element program will be developed for the analyses of tunnel stability, in which the composite grouted bolt element and nonlinear finite element analysis method will be used ; the patterns and the affect of main design parameters on the support effect of bolt will be analysed using the program, and conclusions of guidance importance for tunnel support design will be drawn. finally, simulation compution for the excavation and support of a highway tunnel will be made out using the above production, and the method of application of the program will be discussed ; analysis of the deformation, stress and distribution of plastic range will be done, and rational support plan will be worked out, which is of guidance importance for tunnel support design and the thery and technique of fully grouted bolt used in tunneling will be perfected further
首先，本文在綜合分析隧道穩定性影響因素及失穩破壞模式的基礎上，對全長粘結式砂漿錨桿作用力學機理進行了深入研究，為全長粘結式砂漿錨桿的有限元模擬分析奠定了基礎;其次，針對傳統錨桿有限元模擬方法的局限性與不足，在上述全長粘結式砂漿錨桿作用力學機理研究基礎上，建立出能反映界面非線性粘結的新型復合砂漿錨桿有限單元模型;然後，運用上述復合砂漿錨桿單元模型，引進非線性有限元分析手段，開發了隧道支護穩定性分析的有限元程序，並就全長粘結式砂漿錨桿的型式與設計參數對支護效果的影響進行了深入探討，得到了對隧道支護設計具有指導意義的結論;最後，運用本文研究成果對某公路隧道工程實例進行了開挖與支護的模擬計算，探討了其應用方法，並就隧道變形與應力及塑性區分佈規律進行了分析，從而提出了合理的支護方案，為隧道支護設計提供了參考依據，完善了隧道全長粘結式砂漿錨桿支護的理論與方法。Abstract : the comprehensive fem analysis for the shimen arch dam and its abutment is carried out as an example to demonstrate the proposed method utilizing the monitoring data for calculation. based on teh back analysis of permeability coefficient and tensile strength of the seam between dam and foundation, the 3 | d seepage flow and elastoplastic fem analysis of arch dam and its abutment are conducted. the safety factor against sliding of arch dam is determined using some different methods to verify the stability of the dam
文摘:本文以石門拱壩為例，說明基於原觀資料進行拱壩及其基礎的綜合分析的方法.內容包括：在反演擬合滲透系數和壩與基巖接觸面的抗拉強度參數的基礎上，進行壩址區三維滲流場分析、拱壩與基礎的三維線彈性、彈塑性力學分析，並用多種方法探求了拱壩抗滑穩定安全系數Secondly, grounded on the study of the distribution of the high external waterpressure and high geostress and the characteristic of the rock in engineering area, the paper built the elastoplastic fem numerical simulation model, and think over the procedure in tunnels excavation and the history of work of water load, and then get the relations between the different tunnels diameter, different permeability coefficient and depth of the grouting rock and the deformation, stress distribution and plastic range of the surrounding rock and support structure. finally, according to the modern design theory of tunnels construction, the particular design of country rock reinforcement and support structure are researched and presented for diversion tunnels
接著，本文在深入研究工程區高外水壓力及高地應力分佈規律及巖體特性的基礎上，建立起高地應力、高外水壓力作用下隧洞圍巖結構非線性有限元模擬計算模型，然後考慮隧洞的開挖過程、水荷載的作用歷史，通過計算分析得出了不同洞徑、不同的灌漿圈滲透系數和不同的灌漿圈深度以及不同開挖過程與圍巖及支護結構的應力、位移和塑性區的關系。At last, with the program, 18 one - storey and one - span prestressed frames are simulated. some conclusions are reached with the taking into account the, secondary moment and types of load applying : ( 1 ) the in the beam affects the ductility of the section and rotary property of the plastic hinge. so total coefficient of the modulation of moment becomes less with the becoming bigger
最後，本文利用編制的非線性程序，模擬了18榀單層單跨預應力框架，重點研究截面相對受壓區高度、次彎矩、加載方式對塑性內力重分佈和彎矩調幅的影響，從中得出了以下主要的結論和規律： （ 1 ）框架梁相對受壓區高度在很大程度上反映了截面的延性，體現了塑性鉸的轉動能力，框架的總彎矩調幅系數隨著相對受壓區高度的增大而減小。Numerical modeling for porphroblast s rotation and deformation of augen fabrics in ductile shear zones is done by a large plastic deformation programm based on detailed investigation to three ductile shear zones, taihangshan mountains
在對太行山阜平地區三條剪切帶作了詳細觀察和測量的基礎上，就斑晶旋轉和眼球構造進行了塑性大變形的計算機模擬。Separately select and use the slice method based on rigid body theory of ultimate equilibrium and the ai theory based on neural network to justify loess side slope stability and finite element numerical stimulation based on elastoplastic theory to further research the factors of slope failure and deformation mechanism of landslide
分別採用基於剛體極限平衡理論的條分法和基於神經網路的人工智慧理論判別黃土邊坡穩定性；又採用基於彈塑性理論的有限元數值模擬，進一步探討了黃土地區邊坡失穩的影響因素及其滑坡變形機制。( 4 ) according to the new methods of dynamic numerical simulation analysis and resting on the engineering geological conditions of surrounding rock mass and the project design, the three numerical simulation results are obtained, from which the author analyze systematically the distribution features of stress field, strain field and plastic zone in the surrounding rock mass of the underground cavities after the excavation and also the variable features of stress field, strain field and plastic failure zones in the surrounding rock mass of the underground cavities in the course of excavation
（ 4 ）按照動態數值模擬新思路，以地下洞室群圍巖的工程地質條件和工程設計方案為依據，系統研究了大跨度、高邊墻地下洞室群開挖完成後圍巖的二次應力場、變形場和塑性破壞區的分佈特徵，開挖過程中圍巖的應力場、變形場和塑性破壞區的變化特徵。First, based on comprehension analysis of the present study status on optimizing method to displacement back analysis in underground engineering home and abroad, intelligent optimizing method, which fits the features of underground engineering, has been developed by introducing annealing algorithm and genetic algorithm and improving them. second, according to practical features of nonlinear displacement for underground engineering, the mechanical model on back analysis to initial ground stress and mechanical parameters of surrounding rock mass in underground engineering is established, which is based on the measuring results of displacement of convergence in underground holes. while, by introducing finite element method and combining improved annealing algorithm and improved genetic - annealing algorithm, the theory and method of elastic - plastic displacement back analysis to surrounding rock in underground engineering has been founded
首先，本文在綜合分析國內外地下工程優化位移反分析方法研究現狀的基礎上，引進模擬退火與遺傳演算法，並對其進行改進，建立了適合於地下工程問題特點的智能優化演算法;其次，根據地下工程非線性特點，基於地下工程洞周收斂位移量測結果，建立了用於地下工程初始地應力與圍巖力學參數反演分析的力學模型，並引進有限元分析手段，結合改進模擬退火演算法與改進遺傳-模擬退火演算法，分別建立了基於這兩種智能優化演算法的地下工程圍巖彈塑性位移反分析理論與方法，並開發了相應的分析計算程序，為地下工程圍巖穩定性與開挖順序優化分析奠定了基礎;然後，在上述基礎上，根據地下工程開挖施工順序優化設計的特點，建立了基於圍巖塑性區面積的地下工程開挖施工順序優化分析模型，基於改進模擬退火演算法與改進遺傳-模擬退火演算法建立了地下工程開挖施工順序優化分析方法，並開發了相應的分析計算程序;最後，將上述分析計算程序用於工程實例分析，探討了其應用方法，證明了該文研究成果的合理性和可靠性。To eliminate the residual stress formed during the process of al board cold rolling, the distribution of stress in the deformation region was stimulated by elas - plastics large deformation finite element analysis
摘要?消除鋁板冷軋過程中?生的殘餘應力，採用彈塑性大變形有限元法對變形區內殘餘應力的分佈進行數值模擬。In this paper, systematic numerical test have been carried out to study the stability of surrounding rock mass with different distribution of weak interbed, different distance between weak interbed and limit of excavation, different thickness of weak interbed, in the different confining coefficient and representational surrounding rock mass graded ii, iii, iv. all of the numerical modeling is plain - strain type with elastic - plastic constitutive law and mohor - coulomb failure criterion, through the integrated numerical analysis program final. plentiful numerical test results have been drawn via analyse the deformation, tensile stress region, plastic region of surrounding rock and the stress status of shot - crete
大量的工程實踐表明，軟弱夾層對地下洞室圍巖穩定性的影響有著決定性的作用，本文以大型數值模擬分析系統final為平臺，採用彈塑性應力應變關系和m - c屈服準則建立平面應變問題有限元模型，對軟弱夾層的分佈部位、分佈距離、軟弱夾層的厚度對圍巖穩定性的影響以及在具有不同側壓力系數的地應力場中和、 、類代表性圍巖中軟弱夾層對圍巖穩定性的影響進行了系統的數值試驗，研究得出了軟弱夾層對圍巖位移、拉應力區、塑性區以及噴射混凝土層內力等影響豐富的量化成果，以便直接為工程設計人員提供參考。The analysis of slope stability by using strength reduction fem in software ansys. the safe coefficient and the glide of the slope is base on the judge criterion of the development of the plasticity area
採用有限元分析軟體ansys ，結合了強度折減理論，在基於塑性區開展的評判標準下，對邊坡體的穩定性進行模擬分析。Then a dynamic visualization software - - afterdraw, which aims at 2d elastic - plastic fem, is programmed. afterdraw is capable of drawing the deformation figures of material, the regions of plasticity and the regions of tension distributing figures, primary stress vector figures and primary strain vector figures. besides, atterdraw could realistically dynamically simulate the deformation of the whole process of construction
在此基礎上，研究了針對二維彈塑性有限元的動態可視化后處理軟體afterdraw ， afterdraw能夠繪制基坑工程各步施工的結構變形圖、塑性區和受拉破壞區分布圖、主應力矢量圖和位移矢量圖， afterdraw還能夠逼真地動念模擬基坑工程整個施工過程變形情況。After the engineering slope was dug, several small plastic zone the designed rock - fill dam will coming in the temporary slope, because rock - fill dam change the stress field on a small degree. but a gravity dam will arouse a great area of plastic zone in the permanent slope, which will bring a stability problem. after detail and depth study, the rock - fill dam project is more compatible of the engineering geology condition in nuozadu hydraulic - power station ' s dam site
工程邊坡開挖后，擬定的堆石壩方案由於嵌入淺，應力的調整有限，塑性區主要分佈在壩頂高程附近的較小范圍內；而擬定的重力壩方案，由於嵌入深，引起了一定程度的應力調整，邊坡巖體表層產生了鬆弛變形，塑性區主要分佈在壩頂高程到坡頂前緣（永久邊坡）的v ivb類巖體分佈區。Taking the - 190 level southern roadway in gequan coal mine in china as the object of study, the numerical analysis of stress distribution, plastic zone, displacement of surrounding rock and stress state of rock - bolt under the conditions of both shotcrete - bolt support and combined bolting - shotcreting - grouting support was carried out with udec software
摘要以葛泉礦190南翼運輸大巷為研究對象，採用udec數值模擬軟體對該巷道在全斷面錨噴支護和全斷面注漿與錨噴聯合支護兩種條件下圍巖應力分佈、圍巖塑性區范圍、圍巖位移和錨桿受力情況進行了分析。分享友人