theory plasticity 中文意思是什麼

theory plasticity 解釋
范性理論
  • theory : n. 1. 理論，學理，原理。2. 學說，論說 （opp. hypothesis）。3. 推測，揣度。4. 〈口語〉見解，意見。
  • plasticity : n. 1. 黏性；可塑性；柔順性。2. 適應性。3. 【物理學】塑性學。
  1. This paper referred to the massive domestic and foreign technical material, elaborated in the sheet forming value simulation theory essential technology in detail, points out when analysis sheet forming question should use the big distortion ball plasticity fem and introduce the application characteristic and the function summarizes of the sheet forming simulation software dynaform. secondly, analyzed the cover forming characteristic, simultaneously introduced the influence cover forming factor in detail : such as ramming direction, the craft addendum surface and the material pressing surface, the radius of convex - concave mold, draw bead, pressure strength, blank size and craft margin and so on. and simulates many typical automobiles cover panel with software : such lateral board, back taillight pedestal and storage cover

    其次，分析了覆蓋件成形的特點和要求，同時詳細介紹了影響覆蓋件成形的因素如沖壓方向、工藝補充面和壓料面、凸凹模圓角、拉延筋、壓邊力、坯料尺寸和工藝切口等，並用數值模擬軟體對多個典型的汽車覆蓋件汽車后側圍板、后燈座以及轎車后備箱蓋的沖壓成形情況進行模擬，用模擬結果優化拉延工藝方案，比較了內覆蓋件和外覆蓋件在成形特點和要求的一些異同點，以及常見的起皺、拉裂和回彈、成形不足等缺陷的產生機理和相應對策，重點介紹工藝補充面和壓料面的設計及優化方法，因為拉延是沖壓工藝的關鍵工序，而工藝補充面和壓料面的設計是拉延工序的關鍵，對消除缺陷至關重要。
  2. Most existing constitutive models do not take into account the interactions between different phases of pearlitic steel and cannot illustrate why such kind of materials has excerllent mechanical properties. it is, therefore, necessary to develop a new method, which can describe the macroscopic behavior, damage and failure of the materials and their micro structural dependence. in this paper, based on a non - classical theory of plasticity and the continuum damage mechanics, a damage evolution based on an ellipsoidal void model for mixed hardening materials is obtained

    已有的關于珠光體鋼的本構模型多難以考慮珠光體材料的微結構及其相互作用，難以解釋珠光體材料何以具有較好的綜合力學性能，因此有必要發展一種多層次的細觀力學分析方法以研究此材料在復雜加載條件下計及微結構特徵的宏觀響應特性，使材料的強度、疲勞壽命的預測與其微結構及各組成相的損傷及微觀應力應變演化規律聯系起來，進而為材料微結構的設計提供依據。
  3. First, mathematical expressions for hoop strain based on linear elasticity theory and deformation plasticity theory, and thus diametral strain is derived

    模型推導過程是：首先根據線性彈性理論和變形塑性理論推導出周向應變的數學表達式，進而導出徑向應變。
  4. In this paper, based on the analysis of the rlem of theory foundation, computing method, preference, applicability, etc, we anatomized the rlem of three self - deficiencies and six scarcities. moreover, we adopted the parallel ways of contrasting the rlem with the fem and applied it to analyzing the impact of slide block of elasticity and plasticity, slip surface of coefficient and slip bed of elasticity, plasticity upon the stability of slope and in the plain linearity slope, the plain refracted line slope and the plain arc slope. in addition, we discussed the warp of between the lem of ( sarma, janbu, order, bishop, morgenstera - price, etc ) and the fem of result and the distributing of positive stress and shear stress on the slip surface

    本文從剖析剛體極限平衡法的理論基礎、計算方法、參數選取、適用條件等方面入手，剖析了剛體極限平衡方法的3點自身缺陷和6點不足，並在此基礎上採用了剛體極限平衡法（平面滑動破壞法、 sarma法、傳遞系數法、普遍條分法、 janbu法、 bishop法、 morgenstern - price法）與大型有限元法對比研究的方法，分析研究了平面直線型滑坡、平面折線型滑坡、平面圓弧型滑坡在漸進破壞中邊坡的滑體彈塑性參數、滑麵塑性參數） 、滑床的彈塑性、以及極限平衡法無法考慮開挖應力釋放等因素對邊坡穩定性的影響與滑動面上的正應力、剪應力分佈規律、安全系數的解答的差異。
  5. According to elasto - plasticity theory, with the help of finite - method program ansys, the paper undertakes the computer analogue tests about the bearing capacity of pile tip arranged by orthogonal principle, and attains the relations of pile - tip bearing capacity to embedment depth, pile diameter, cohesion, internal friction angle and modulus of deformation. by the means of mathematical statistic, regression equation of the ultimate bearing capacity calculated by finite element method is gained through the regression analysis of 81 group data from the computer analogue tests. by comparison and analysis of the values calculated by finite - element regression equation and the values of in situ loading test, the regression equation is gained which calculates the size effect for base resistance of large diameter pile

    根據彈塑性理論，運用大型有限元軟體ansys按正交設計理論對樁端承載力進行模擬計算，獲得樁端承載力與樁長（埋置深度） 、樁徑、粘聚力、內摩擦角及變形模量等主要影響因素的關系，並採用數理統計方法，對81組ansys模擬試驗結果數據進行回歸分析，得到有限元法確定樁端極限承載力的回歸公式，並將有限元法回歸公式計算值與現場小壓板載荷試驗值進行比較分析，得到大直徑樁端阻的尺寸效應系數計算公式。
  6. It overcomes the limitation in the assumption in other semi - supervised learning algorithms that probabilistic distribution of data is known, and has the strong ability of learning new patterns and correcting errors because of stability and plasticity of the adaptive resonance theory

    在該系統中取消了一般半監督學習演算法中假定已知數據概率分佈的條件限制，利用自適應諧振理論的穩定性和可塑性，使其具有非常強的學習新模式和糾正錯誤能力。
  7. 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。
  8. The research focus on soil c compaction principle under the action of combination impaction and vibration by the test and theory method based on elasticity, plasticity and rheology performance. put a lot of stress boxes in the soil. measure and record the soil stress directly, then process the record datas by mathematic method

    在方法上採用了理論與試驗相結合的研究方法，在土體彈、塑特性及土體流變特性的理論基礎之上，在土體中埋放了大量的壓力盒，通過測量和觀測儀器直接記錄土體內部各點在沖擊與振動聯合作用下的內應力值。
  9. The paper deduced the deformation and flexural bearing capacity formula by the theory of elasticity - plasticity, ultimate - state method

    本文分析研究中用彈性理論、彈塑性理論、極限狀態方法推導組合板受彎承載力和變形計算公式。
  10. Third, a theoretic approach based on total theory of plasticity is for the first time applied to analyze elastoplastic torsion rigidity of the tubular, and the results are well proved by the test data. also for the first time, the plastic stability of the spiral skew stiffening shell is studied. it is shown in the experiments that there is the comparability between the stability of the members at plastic limit and that of the thin - shelled steel tubular with the spiral skew stiffening concrete rib

    本文首次分析了扭轉作用下的螺旋斜向加勁殼的塑性穩定性問題，還根據試驗觀象的觀察，對構件在塑性極限時的狀態，簡化為內壁襯朽螺協剎向加勁混凝土肋的薄壁鋼管的塑性穩定問題，利用塑性殼體穩定理論進行了探討。
  11. Finally, based on the elasto - plasticity theory, plastic design and analysis for metal hub of flywheel was performed

    最後，利用彈塑性理論，對飛輪轉子的金屬輪轂進行彈塑性設計與分析。
  12. A lagrangian finite plasticity theory

    型有限變形彈塑性本構理論
  13. Because of its simplicity of the critical moment and the good precision, the solutions based on gjelsvik theory are used in the elastic - plastic phase. the ultimate load carrying capacity of box section beams are calculated considering the effect of plasticity and residual stresses

    其次，運用基於gielsvik約束扭轉理論推導了箱形偏壓桿的彈性彎扭屈曲荷載，同時給出了壓彎桿在彈性彎扭屈曲的軸力和彎矩相關關系。
  14. Plasticity theory of hencky

    亨奇塑性理論
  15. Analysis of lateral deformation of rock specimen based on gradient - dependent plasticity : basic theory and effect of constitutive parameters on lateral deformation

    基本理論及本構參數對側向變形的影響
  16. For the vertical partial bending of the thick slab, the author has also compared the elasticity theory with plasticity theory

    而對轉換厚板所受的豎向局部彎曲，作者比較了彈塑性理論對于問題解決方法的異同。
  17. Firstly the paper introduces and generalizes the distribution, engineering classification and engineering properties of the tertiary mudstone in guangxi. then the paper analyzes the pile - tip bearing behaviour of the tertiary mudstone in guangxi. last aiming at the tertiary mudstone in nanning basin, the paper studies on its bearing capacity of pile tip by methods of in situ plate loading test, rigid - plastic body theory and elasto - plasticity theory

    本文首先歸納介紹了廣西第三系泥巖的分佈、工程分類與物理力學特性，分析了廣西第三系泥巖的樁端承載性狀，然後以南寧盆地第三系泥巖為代表，採用原位載荷板試驗、剛塑體理論及彈塑性理論三種方法研究其樁端承載力。
  18. Abstract : based on soil plasticity and limit analysis theory, the second failure surface of backfill behind retaining wall with gentle back surface are studied from two view points of maximum active soil pressure and minimum resistive overturning safety factor, and it is further considered that the minimum resistive overturning safety factor is the best approach to studying the failure mechanism of backfill under complex back surface conditions of retaining structures

    文摘:基於土的塑性極限分析理論，從擋土墻最小抗傾覆安全系數和擋土墻背上的最大主動土壓力兩個角度，分別研究了坦墻後土體中第二破裂面的位置，認為在復雜的擋土結構墻背條件下，用最小抗傾覆安全系數來研究擋土墻後土體的破壞機制較為合理。
  19. Incremental theory of plasticity

    塑性增量理論
  20. The distribution of stress and strain and the variety of blank thickness is analyzed during different forming stages of laminose stepped tubular part. the condition of one - off drawing of laminose stepped tubular part is obtained. plasticity theory and numerical simulation technology of finite element are applied synthetically to analyze the forming technological characteristic of stepped tubular part,

    通過綜合應用塑性力學理論、有限元數值模擬等手段成功地分析了階梯筒形件成形工藝特點，獲得了階梯筒形拉深的合理工藝方案及階梯筒形件一次拉深成形的規律，最後通過實驗檢驗對此工藝方案及規律進行了驗證，結果表明本文所提出的工藝方案及階梯筒形件一次拉深成形規律是正確可靠的，能直接用於指導生產。
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