塑性失穩 的英文怎麼說
中文拼音 [sùxìngshīwěn]
塑性失穩
英文
plastic buckling-
Abstract : based on destructible feature of plastically drawing unsteadiness of pressure vessel, this paper calculated elastical / viscoplastical drawing unsteadiness of pressure vessel made of revolving shells
文摘:依據壓力容器拉伸塑性失穩破壞特徵，計算了旋轉薄壁殼壓力容器在彈粘塑性材料下的塑性失穩破壞。Especially for the tough, ductile materials used in nuclear plant piping, ordinary plastic collapse analyses will possibly suffice.
尤其是對于核電管道的韌性材料，一般的塑料失穩分析可能足夠了。The content of this thesis, through the deformation destruction process of th e typical nanlidu landslide along the national highway 318, uses the finite unit a nalysis of computation, revealing the elastic, plastic stress and displacement of each joint inside the slide area pointing out the distribution range of the tension stress and the plastic deformation range, computering the stability safety factor of the slide area, gaining the fixed quantity, quota that evaluates the stability of the slide area, revealing the position of the slide area which is most likely to los e its stability, thus, it can provide theoretic proof for the programs which renova te landslides
本文的研究內容是通過318國道南里渡典型滑坡的變形破壞過程，採用有限元計算分析，揭示滑體內部每個節點上的彈、塑性應力及位移，找出拉應力分佈區和塑性變形區，計算滑體穩定安全系數，得出衡量滑體穩定的定量指標，揭示滑體最可能失穩的部位，從而為滑坡整治方案提供理論依據。When the element studied lost the stability during the elastic - plastic period, the stability balance equation turn to the special coefficient differential equation, and the analytic value cannot be got
當所研究構件是在彈塑性階段失穩時，穩定平衡微分方程變成非常系數微分方程，而無法求得其解析解。The 3 - d numerical simulation shows that the temperature rise of necking region is higher than that of no - necking region
對無氧銅在破碎前出現塑性失穩多重頸縮進行了初步分析，利用能量平衡的破碎理論給出了無氧銅環的破碎分佈。According to the practical geological model of slope, by means of the finite element analysis, from the constitutive equations of the elastoplasticity and the viscoelasticity - viscoplasticity, the process and mechanism for progressive failure of the locked segment of rockmass are quantitatively revealed and simulated during the rupture, deformation, destruction, and failure of highsteep slope rockmass, and the dynamics driving the motion of rocky landslide with violent starting velocity by high pressure water flow is dealed with
根據邊坡實際地質模型，基於彈塑性與粘彈-粘塑性理論的本構方程，通過有限元模擬分析，定量地揭示和模擬再現了高邊坡巖體破裂、變形、破壞及失穩前後鎖固段巖體漸進性破壞的機制和過程，探討了高壓水流作用下滑坡啟程劇動的破壞機理。With improvement of material composition and processing, the failure modes demonstrate predominately elevated wear and plastic deformation, and no earlier failure occurred, leading to a considerable improvement of service life and a stable number of 6000 ~ 7000 times, 80 % more than forging steel dies
經改進材質及工藝后，熱磨損、塑性變形為主要失效形式，而未出現早期斷裂失效，壽命得到明顯提高，穩定在6000 ~ 7000件，高於鍛造模具鋼80 %以上。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。Relational marketing ( relation marketing ) a word by white switzerland ( c l. l. berry ) introduced the literature first in 1983 new years. the home comprehensive viewpoint thought the relational marketing is refers to the enterprise through with the main partner between, like the supplier, the customer, the dealer and so on long - term construct, satisfaction strategy partner relations, and fulfills the promise through the mutually beneficial exchange to cause related all quarters together to realize respective goal, thus seeks the communal development. first relates the marketing the beginning and the end point is the value process, next exchange process is relates the marketing the core, finally converses the process is relates the marketing the key to be at
本文介紹了關系營銷的基本理論，分析了rh公司實施顧客市場關系營銷的理論依據? ?顧客讓渡價值，就rh公司顧客市場中暴露出的嚴重的顧客流失問題，從維系顧客關系、穩固市場份額的角度論證了該公司實施顧客市場關系營銷的必要性和可行性;有針對性地研究了該公司實施顧客市場關系營銷的幾種策略? ?從傳統的營銷環節擴展到產品研發等全過程，並將研究范圍延伸到國際顧客市場;提出搞好內部關系營銷、組織設計、資源配置和塑造品牌優勢等完善rh公司顧客市場關系營銷內部措施。Researching on the technology if reverse order is to study strains if pits, structural systems if basement, environmental surwey and underpinnings. on account of emphasizing developing methods if checking strength if pick - ets, modemizing machenes of excavation and studying methods of underpinning is put forward and is a way if controlling the quality of pickets in sites, which leads an active effect ; synthetic application if rankintheory, spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward and the time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found ; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it. duringh the temporary survey and the environmental warship, bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration ; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed
鑒于國內外的研究把重點放在大力發展工程樁的實驗室承載力監測方法與設備、如何使土方開挖機械現代化及對周圍建築的臨測方法上，本文提出了現場利用聲波層析成像技術監測鋼砼樁內部質量的方法與程序，並得出了聲波層析成像技術是砼樁的動態質量檢測的有效手段，這對指導施有積極、現實意義；提出了綜合運用朗肯土壓力理論、基坑空間和時間效應影響理論來分析逆作法施工過程中基坑邊坡土體應力及應變的變化情況，指出粘土地區也應考慮時間效應，並且進一步分析了基坑邊坡土體的塑性區形成和發展，找出邊坡最不利的區域，以確定地下室土體的挖掘的方式和順序，指出憑主觀臆斷與經驗來施工是不可取的；在分析、經較逆作法與大開挖順作法的地下室結構體系受力情況及施工順序的不同，提出了節點處理技術；分析了逆作法施工期間樁的沉降變化原因及由此而產生的差異，並探討了解決的方法；本文還提出了環境振動對土體邊坡穩定產生影響的觀點，並分析了在環境振動影響下，土體的應力狀態及土休失穩破壞概率，並且還運用彈性力學知識和數學分析的方法定量地分析了地下混凝土墻受力狀態，指出了被監測墻體的最大應力、應變位置。The critical crack and stress put forward provides theoretic foundation for monitoring portal machine. 3. applying steady theory of board, studying the problem of early curvature, flexibility model, welding remaining stress, elastic transmutation and brace condition and so on, conclude that structure of beam is primary place where metal structure of portal crane lose stabilization and the break of main beam is result of losing partial stabilization of main board
文章提出的界限應力和臨界裂紋對于港口機械的監測提供了理論依據； 3 、運用板的穩定理論，探索了作為薄壁構件的門機金屬結構在失穩破壞中所涉及到的初曲率問題、彈性模量問題、焊接殘余應力問題、彈塑性變形問題以及支承條件問題等，得出了門機金屬結構發生失穩破壞的主要部位為臂架結構，且主臂架的折斷是由於受壓翼板局部失穩引起整體破壞； 4 、探討了焊接對結構承載的影響。Story - based elastic - plastic stability coefficients of frames
框架彈塑性失穩的層穩定系數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。The effect of different sizes of sections, modes and values of residual stresses are studied. through the analysis, the conclusion is arrived at that the universal slenderness ratio should be used to better correlate the stability of box section beams with the member length instead of the out - of - plane slenderness, and the stability coefficient is taken to be 1. 0 for practical used box girder. then, the elastic critical loads of box section beam - columns are obtained based on the gjelsvik theory, and the relationship between axis force p and moment m is given
最後，運用ansys通用有限元程序的beam189單元，引入初彎曲和殘余應力的影響，用考慮幾何和材料雙重非線性的有限元求解格式求得箱形柱在不同軸力和彎矩比例作用下的彈塑性極限承載力，通過對十幾個不同截面尺寸構件在不同長細比下的承載力計算，發現在軸力p遠大於彎矩m時，構件將是平面外失穩控制，而當軸力p遠小於彎矩m時，構件則以平面內失穩為主。Magneto - elastic - plastic dynamic responses and instability of beam - plate excited by magnetic pulse
磁脈沖作用下鐵磁梁式板的磁彈塑性動力響應與失穩The optimal course is automatically implemented with matlab. the cusp catastrophe model is established by means of the upper bound theorem of plastic limit theory. the characteristic formula of the failure of slope is also deduced
根據分析邊坡穩定性的塑性極限方法的上限理論建立了邊坡失穩尖點突變模型，並得出邊坡突發式滑坡的特徵關系式，用突變理論對非飽和土邊坡穩定進行了初步研究。The proposed beam model satisfied the rigid - body test requirement. by using general displacement control method ( gsp method ) to determine the incremental load parameter and using incremental tangent method to deal with material non - linearity, the proposed beam model were proved to be able to track the entire procedure of deformation, numerically effective during buckling or snap - through of structure
一系列的典型算例分析表明，本文提出的彈塑性大位移梁單元，能夠準確的跟蹤結構變形的整個過程，包括極值點失穩和跳躍屈曲的情況，可以運用於框架結構的屈曲后性能研究和非線性極限承載力的分析計算。分享友人