criterion of failure 中文意思是什麼
criterion of failure
解釋
斷裂標準-
On the basis of investigations into the progressive yield process and the possible failure modes of rcc gravity dams, the quasi - elasticity design limit state of the ctrtical stability criterion is proposed and the real working state of the dams designed according to the ctriterion is discussed. a check formula using the material strength reducing factor as the safety index and a simplified formula similar to against sliding stability fromula are derived. finally, the corresponding design safety factors are given by using fem calculations with various influence parameters to be taken into account
本文在研究碾壓混凝土重力壩漸進破壞過程和可能失穩方式的基礎上，提出了以準彈性臨界作為穩定臨界準則的設計極限狀態，分析了按該準則設計的大壩的實際工作狀態，導出了以準彈性強度儲備系數為設計安全指標的審查公式以及形式與抗剪斷公式相同的簡化公式，探討了定量計算考慮各種因素影響的相應設計安全系數的合理取值，並與現行規范方法進行了比較 -
Deduction of failure criterion for geomaterials based on maximum principal shear strain
巖土材料最大主剪應變破壞準則的推導 -
Failure criterion of strain energy density and catastrophe theory analysis of rock subjected to static - dynamic coupling loading
動靜組合加載下巖石破壞的應變能密度準則及突變理論分析 -
The highlights of this paper include : hoop toughness criterion for longitudinal heat checking of tool joint was introduced firstly ; failure criterion for crescent - shaped wear casing was established according to the results of full - scale collapse tests ; new - typed alloy for hardbanding of tool joint was developed, its property has showed good performance in the tests
本文的主要創新點在於：以現場失效案例分析為基礎，提出了鉆桿接頭縱向熱裂的橫向韌性判據；通過對已磨損套管的實物擠毀試驗研究，確定了不均勻磨損套管的擠毀失效準則；設計出了具有獨立知識產權的鉆桿接頭硬化帶用新型耐磨減摩合金的成分，經實驗室試驗表明其性能可以達到或超過國外同類產品。 -
The main research is below : ( 1 ) the influence to intensity and rigid with corner angle ( 60, 75 and 90 degree ) of crack and the board axes ( 2 ) do a fem stress / strain and crack growth simulation analysis when the corner angle of crack and the board axes is 60 degree ( 3 ) do a intensity resume analysis for the structure which is repaired with a titanium patch in a mechanical way when the corner angle of crack and the board axes is 60 degree through simulation analysis for three failure criterion, we have : ( 1 ) in 60, damage extend quickly with damage analysis in hashin criterion ; it is slower for analysis in maximum stress or hashin - rotem criterion. ( 2 ) in special term ( physical condition incision, shape or maximum load ) the compression strength of the stiffened plate will decline 45 % ~ 50 % under compression loads
通過採用三個不同損傷判據的數值模擬模擬，得到如下結論： （ 1 ）在60時，用hashin判據進行的損傷分析，損傷擴展較快；最大應力及hashin - rotem判據進行的損傷分析，損傷擴展基本相當，且較慢； （ 2 ）在所給加筋板的物理條件、切口大小及形狀、最大載荷等一定的條件下，該加筋板在壓縮載荷作用下，其壓縮強度下降了45 50 ； （ 3 ）在本文提及到的機械連接修理方法以及載荷條件下，修理后的結構強度恢復能夠滿足戰時要求。 -
I. a mtil ( iaxial elastic - plastic hardening - sofling constitutive model of concrete is proposed iii order to offer a nonlinear material model of concrete for space restoring force analysis of reinforced concrete members taking into account the softening behavior of concrete. the concrete material model is incorporated the elastic - plastic hardening fracturing constitutive model of concrete with the plastic - fracturing theory of concrete, modified without defining two loading functiomis, and based on five parameter power function failure criterion proposed by guo zheng - hai etc from tsingliua ( jniversity, or three parameter unified strength theory proposed by yu mao - hong from x ian iiaotong university
1 、將砼彈塑性硬化斷裂本構模型與塑性斷裂理論結合起來，並加以改進，但無需定義兩個加載面，以清華大學過鎮海建議的五參數冪函數或以西安交通大學俞茂宏建議的，參數統一強度理論作為砼的強度破壞準則，建立了砼多軸彈塑性硬化松馳本構模型，能為鋼筋砼構件空間恢復力分析提供砼非線性材料模型，並能反映砼材料的軟化段。 -
Through the excel program, and combining the inside and outside environment of the excavation and stress field and displace field, the data of stress and displacement of points are analyzed in variable depth and load grade and terminal state. the spss software has been applied to the statistics of geometry parameter of failure surface, and the failure surface criterion is created by the linearity regression from d ( the longest horizontal distance between the failure surface and the side face of the slope ), ho ( the depth
此外，應用spss軟體對試驗破壞滑弧的幾何參數進行統計分析，並對滑弧的最大水平深入距離d及d處至坑底的高度h _ 0結合各水理指標進行多元線性回歸，建立滑面的判據，並對此判據進行修正，且用實際工程對其進行評價，通過反算已知滑面的c 、值，表明邊界條件對破壞形式有極大的干擾作用，所直接看到的破壞類型土體不是發生整體滑移破壞，而是剝落式的潰屈破壞。 -
Specifically, according to the w - w five parameters failure theory, the fracture criterion of crack is established, and the state of crack ( open or close ) is judged by the values of the crack strain. combining the two points, the predict - model about the failure of concrete material is established. this predict - model can predict 16 failure forms, and basing the different failure form predicted after crack, the stress - strain relationship matrix of concrete material is adjusted
具體來講，根據w - w的五參數混凝土破壞理論，建立混凝土的開裂準則，根據開裂應變值來判斷裂縫是張開還是閉合，從而在兩者基礎上建立了裂縫的開裂預測模式，總共有16種開裂模式；裂后根據具體的開裂模式及殘余抗剪能力來調整混凝土的本構關系矩陣，即用等效剛度代替原有剛度，考慮到垂直於裂縫方向的剛度為零，這樣會使裂后的總剛出現病態，為此文中通過引用鬆弛系數來對出現裂縫的單元進行預處理，一方面可解決因過大的舍入誤差導致計算結果的不可信問題，另一方面就是可加速收斂。 -
Especially for the longitudinal heat checking of tool joint, the hoop toughness criterion of tool joint material was put forward to prevent the heat checking. based on analysis for field failure cases, minimal hoop impact work by means of mechanical calculation has been obtained, which can be used to modify the relevant contents of api rp7g
特別針對鉆桿接頭縱向熱裂問題，提出了控制接頭材料的橫向韌性判據，並以現場失效案例分析為基礎，經力學計算初步確定了最低橫向沖擊功要求，可用於完善修訂apirp7g推薦做法的有關內容。 -
Using the failure criterion of maximum equivalent stress and the method of element birth and death, the space distribution features of small earthquakes ( micro cracks in rock ) before a strong earthquake are simulated
利用最高應力破裂準則、釋放破裂單元剛度生與死的方法，模擬強震前巖石的破裂和小震的空間分佈特徵。 -
Based on the malfunction datum of 328 power transformers ( 110kv or above ), the paper makes the following studies by both the analysis of the datum and lots of tentative tests and presents the corresponding research results : the research on the malfunction mode classification of power transformers by the failure tree analysis method ( fta ) ; the research on the status prediction criterion of running power transformer ; the research on detective methods and criterions of the disability of the power transformer ; the research on evaluation the life of the power transformer ; the research on the relationship between the status estimate system and status examination & repair of the power transformer
本論文以電力系統328臺110kv及以上電壓等級的電力變壓器事故和故障統計資料為基礎，通過對110kv及以上電壓等級電力變壓器故障數據的整理分析和大量探索性試驗，對以下方面開展研究並給出研究結果： 1採用fta （故障樹分析法）對電力變壓器的故障模式進行科學分類2電力變壓器運行中的狀態預測判據研究3 -
The thesis, in the probability analysis and computation, considers the failure history of space frames and trusses, adopts the bound criterion and algorithms on the base of system ' s critical strength, and introduces the soft self - adaptation control bound into the identification of dominant failure modes ; at the same time, with the incremental load method and differential equalized recursive method, computes the limit - state function of failure mode and probability index precisely under no leaking the dominant failure modes
文中在可靠性分析和計算部分，考慮空間剛桁架結構系統的失效演化歷程，採用基於系統臨界強度的約界準則和約界演算法，將柔性自適應控制邊界引入失效模式識別過程；同時，用荷載增量法和微分等價遞歸演算法相結合，確保在嚴格不遺漏主要失效模式的情況下，快速準確地求解失效模式的極限狀態方程和可靠度指標。 -
The rcd has three failure modes the reject - operation, the wrong - operation and the malfunction of handle. the reliability check should consider this characteristic and these failure modes. the success ratio r and the failure ratio a are applied as reliability criterion of rcd
首先，針對漏電保護器不頻繁動作的保護電器的工作特點以及發生拒動、誤動故障及操作故障三類故障的失效模式，採用保護成功率r和失效率作為可靠性特徵量，並給出了可靠性特徵量的估計方法。 -
All the possible operation states are rationally incorporated into a practical state framework. load curtailment is the major criterion to classify states, as well as severity of failure mode
認為各種故障形式和控制措施最後都以切負荷量的形式反映出來，因此將切負荷作為狀態定義的主要判據，兼顧個別嚴重故障模式和嚴重故障後果對系統運行的影響。 -
Based on fuzzy characteristics in durability failure criterion of concrete structures durable life was estimated, in which process survival analysis method was considered with fuzzy theory and the contribution of statement of truncation data was taken into account
結合混凝土結構在耐久性評價中包含許多模糊性因素的特點，將模糊數學的思想融入到生存分析法中。基於結構的耐久性失效準則，並考慮刪失數據的狀態對混凝土結構耐久壽命的貢獻，對混凝土結構的耐久壽命進行了統計分析。 -
The basal specialty of this method is just to consider static equilibrium and mohr - coulomb failure criterion of soils
它的基本特點就是，只考慮靜力平衡條件和土的摩爾?庫侖破壞準則。 -
In our country, most of bridges were built in 1960s or 1970s, which were based on that time traffic discharge and development planning, so design criterion of these bridges were very lower. in addition, it was inevitable to bring about cracks > concrete rupture, steel rust ^ honeycomb and water proof layer failure, because some established bridges were built by poor construction and maintenance during the course of operating period. all above mentioned lead to durability and bearing capacity could n ' t gain to design standard
由於我國很多橋梁建於上個世紀六、七十年代，基於當時的車流量和各方面的發展規劃，橋梁設計等級普遍偏低；另外，某些既有橋梁由於施工質量差和運營期間維護不到位，不可避免地會產生裂縫、混凝土破損、鋼筋銹蝕、蜂窩及防水層失效等缺陷，從而導致耐久性及承載力達不到設計要求。 -
Aiming at four analysis measures - spectrometric, ferro graphic, routine, and particulate counting, the author has established time - sequence model based on fuzzy estimation regulations, tentatively provided analysis standard criterion for failure analysis, and proposed fuzzy systematized model for diagnosis system of lubricant monitoring expert ; employing mathematical methods of fuzzy analysis, the author has established analytical synthetic evaluation model, analyzed the reasonability of analytical measures in lubricating oil and equipment condition evaluation, and provided extraction method model of information regulations for diagnosis system of lubricant monitoring expert by means of analyzing par ameters
針對光譜、鐵譜、常規理化、顆粒計數四種分析手段，建立了基於模糊判斷規則的時序模型，並建立了輪機油液監控專家診斷系統所需的模糊分類器模型；採用模糊分析的數學方法，建立了綜合分析評判模型，並對各分析手段在潤滑油評定和評判設備狀態時的合理性進行闡述，為輪機油液監控智能診斷專家系統提供了一種通過特徵參數分析與處理，建立的規則信息提取方法和模型。 -
The above provides theory bases for the establishment of failure criterion
以上工作為材料建立破壞準則提供理論依據。 -
6 ) the thermo - mechanical behaviors of sma fiber reinforced smart structures with damages have been analyzed by utilizing the shear lag model and variational principle. mathematical expressions on meso - displacement field, stress - strain field of typical element with damages have been presented, and a failure criterion of interface between sma wires and base material is established. a geometric characterization on the failure criterion has also been made via an example
6 ）運用剪滯模型和變分原理，對含損傷sma增強智能結構的熱、力學行為進行了分析，給出了含損傷典型單元體的細觀位移場、應力應變場的數學描述，建立了sma增強智能結構界面的失效判據，並通過算例對失效判據進行了直觀的幾何描述。
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