plastic strain 中文意思是什麼
plastic strain
解釋
可塑性應變-
In order to fully refect the geo - tech basic mechanics behaviors and to rationally explain the strain localization, this paper establishes the theory framework of gradient - dependent plastic model based on the theory framework of gradient - dependent plastic mechanics and in considering the plastic strain ' s gradient - dependence in double yield function, offers a kind of possible concrete pattern of the generalized plastic gradient model and analyzes each parameter of the model, particularly with the physical sense of " localized parameters " and the elements producing possible effect upon the model
為了較全面地反映巖土的基本力學性質，同時合理解釋應變局部化現象，本文基於廣義塑性力學的理論框架，在雙重屈服函數中考慮了塑性應變的梯度依賴，建立了廣義塑性梯度模型的理論框架，並給出了廣義塑性梯度模型的一種可能的具體形式，分析了該模型的各個模型參數，尤其是其中的「局部化參數」的物理意義和可能對其產生影響的因素。 -
Test method for plastic strain ratio r for sheet metal
薄板金屬塑料應變比r試驗方法 -
Zircaloy - 4 sheet, which was cold - worked followed by recrystallization annealing, exhibits longer lcf life in the rolling direction than that in the transverse direction, and the fact that difference in lcf life between both directions becomes larger as the range of plastic strain becomes lower can be attributed to the texture effect, p - solution treatment deteriorates the alloy ' s lcf property because the treatment lowers the average value of alloy ' s schmid factors, and the subsequent annealing - treatment in a - phase range has a impact on the lcf properties, i. e. the subsequent annealing - treatment at 500 ? for 1. 5h results in better property than that at 750 for 1. 5h, which comes mainly from the fact that the alloy annealled at 500 for 1. 5h has lower amount of the precipitate particles than the alloy annealled at 750 for 1. 5h
對于冷加工后經再結晶退火處理的zr - 4合金，軋制方向的低周疲勞壽命比橫向要大。隨著_ p的降低，兩個方向的低周疲勞壽命的差別相應增加，這是由於合金中存在織構的緣故。冷加工后經再結晶退火處理的zr - 4合金在固溶處理后，抗疲勞性能明顯降低，這主要是由於固溶處理降低了合金的schmid因子；固溶處理后在相區的退火對疲勞性能有影響，即500 1 . 5h退火的抗疲勞性能要優於750 1 . 5h退火，這主要與500 1 . 5h退火的合金中沉澱相粒子的數量較少有關。 -
While cyclic deformation experiment under constant strain control is performed in 400, the material shows the continuous hardening until cyclic invalidation. ( 3 ) back stress attained by kwl " s method is used to analyse the bauschinger effect during an incremental step cyclic test and cyclic deformation test under constant strain control, it is shown that back stress increases with increasing plastic strain and the numbers of cycle, and the back stress is uniform, regardless of tension or compression conditions. ( 4 ) as far as recrystallized zircaloy - 4 plate is concerned, the back stress in transverse direction is higher than that in rolling direction due to the higher schmid factor in rolling direction
對于再結晶狀態的zr一4合金板材試樣來說， t方向（橫向）試樣的背應力要高於r方向（軋制方向）的背應力，原因在於r方向的schmid因子高於t方向的schmid因子; 400下， zr一4合金的背應力要明顯低於室溫下的背應力;含氫200pg / g的zr一4合金的背應力大小與無滲氫的zr一4合金背應力相比，無明顯區別;固溶處理后， zr一4合金的背應力大小發生了變化，在較高塑性應變下，背應力均高於固溶處理前的背應力。 -
In addition, the constitutive models included in flac - 3d are deep into research, and th e stress increments are corrected in terms of the plastic strain increment while occurrence of plasticity flow
此外，還對flac - 3d內嵌的本構模型深入研究，塑性流動發生時塑性應變增量對應力增量的修正。 -
The explicit finite element method ( fem ) based on the varying time - step was selected to analyse the dynamic roll - pass process ; the nodes on the leading face of the steady - state elements set was extracted and projected onto a plane to give the required mesh, also called the origin mesh ; the implicit fem was selected to analyses the inter - pass transient thermal process ; a geometric part from the mesh was generated and meshed by using the quadrilateral elements, a heat transfer analysis was selected to transfer the node temperature data ; a new model was created by using hexahedral elements, mapping the node temperature and the equivalent plastic strain on the integration points
利用基於變步長中心差分格式的顯式積分方法分析瞬態軋制過程；提取穩態單元集節點形成截面網格；利用隱式積分方法分析軋制道次間隙瞬態溫度場；對型鋼斷面進行平面四邊形網格劃分並映射節點溫度數據；利用六面體單元構建有限元分析模型，映射單元節點的溫度、積分點的等效塑性應變，進行數值分析。 -
Standard test method for plastic strain ratio r for sheet metal
金屬薄板塑性應變率的標準試驗方法 -
Method of determining the plastic strain ratio for metallic sheet and strip
測定金屬薄板材和帶材用塑性應變比試驗方法 -
( 1 ) the statistical damage constitutive model for rock is improved basing on the hypothesis that the strain in the rock without damage is ideal to that in the damage rock. the hypothesis that all of the stresses in damage evolution equation are effective stresses is realized, and the proplem how to couple plastic strain to damage is solved
主要工作內容如下： （ 1 ）在假設無損巖石的應變和巖石總應變相等的基礎上完善了巖石的統計損傷本構模型推導，實現了損傷演化方程中全部採用有效應力假設和探討了損傷和塑性變形耦合問題。 -
Regard yield function as temperature and plastic strain ' s function, the deflection of simply - supported slabs under fire are analyses by coordinate finite element. the computing results show in good agreement with the results of tests. it is demonstrated that the method and the computer programs are reliable
理論分析主要是採用二維有限元分析了構件截面溫度場；採用拖帶坐標描述法的有限元格式，在考慮了在時間步內屈服面是溫度和塑性的函數基礎上，分析了簡支板在火災作用下的變形規律，所得結果與試驗吻合較好。 -
R metallic materials - sheet and strip - determination of plastic strain ratio r - values
金屬薄板和薄帶塑性應變比 -
In this dissertation, the effect of texture, heat - treatment, and hydrogen on the lcf behavior of zircaloy - 4 and the cyclic deformation behavior for zircaloy - 4, n18 alloy and n36 alloy have been investigated systematically using fully - reversed tension - compression loading under strain control ( r = min / max = - 1 ), while the evolvement of the friction and back stresses versus the number of repeated working cycles and the plastic strain amplitude has been studied, and the thorough discussion combined with the analysis result of fatigue sub - structure, friction and back stresses, and fatigue fracture has been given to the mechanism underlying the lcf behavior of alloys
本文採用對稱拉壓循環變形方法（ r _ = _ （ min ） _ （ max ） = - 1 ） ，系統研究了織構、熱處理狀態、氫對zr - 4合金低周疲勞性能的影響， zr - 4合金、 n18合金和n36合金的循環變形行為，並研究了摩擦應力、背應力隨循環周次、塑性應變幅的變化規律。結合疲勞亞結構和疲勞斷口的分析結果，深入探討了影響合金低周疲勞行為的作用機制。 -
Plastic strain first starts from ambient of the porphyroblast, and then develops to rims of porphyroblast and gradually transfers to the centers of porphyroblasts. the brittle remains in the central parts of porphyroblasts come to be decreased through the plastic deformation development, which is accordance with the banding of intensity in many mylonitization zones on wild occurrences and observation in the fabrics of mylonitization rocks under microscope
長石眼球構造的形成主要是由長石與石英的韌性差決定的，塑性變形首先從斑晶的周圍部分開始，逐漸向斑晶發展，脆性殘斑核不斷減小，這與剪切帶內糜棱巖化強度分帶相一致。 -
Supposed the two nonreversible deformations both obey the drucker law, the plastic loading function was established based on experimental data and the plastic work was used as hardening parameter supposed loess damage is mostly due to shear and the damage potential function has the same form of the equivalent plastic strain line in the plastic part, the damage potential function was gained by fitting the test data
假定兩類不可逆變形都服從drucker公設，根據試驗數據確定以塑性功為硬化參數的塑性加載函數。認為損傷主要由於剪切產生，假定損傷勢函數與塑性部分的塑性剪應變等值線具有相同的形式，通過試驗數據擬合得到損傷勢函數，然後根據損傷理論推導建立q1黃土的彈塑性損傷本構模型。 -
Investigations showed that one of the most important characteristics of pearlitic materials is the decrease of ratcheting rate, the plastic shakedown capability, and the memory and recovery of the accumulated plastic strain under asymmetrical stress cycles. it was found that the interaction between phases plays an important role in the mechanical behavior of pearlitic materials, such as wearability and contact fatigue life
珠光體材料的重要特性之一是在非對稱應力循環下循環蠕變速率的減緩並趨于塑性安定以及材料對循環蠕變史的記憶與恢復；同時珠光體材料的宏觀力學性能與其細觀結構密切相關，在很大程度上取決于珠光體材料的微結構及其相互作用。 -
According to the result, the location of slip surface is confirmed by the plastic strain contour lines
並且利用有限元的計算成果，根據塑性區塑性應變等值線分佈情況來確定邊坡最危險滑面位置。 -
Plastic strain ratio calculation of metal sheet from low - resolution texture analysis
從低分辨織構計算金屬板材的塑性應變比 -
It can he used to compute many appropriate scalar quantities such as temperature, displacement, effective stress and effective plastic strain
重點研究此法在焊接的熱分析中的應用，得到了有益的結論。 -
Three - dimensional model of t - branch tube compound bulging has been established by using advanced explicit finite element codes ansys / ls - dyna with the research of distribution law of equivalent stress and plastic strain
摘要採用顯示動力分析軟體ansys / ls - dyna建立復合脹形三維有限元模型，深入研究了三通管液壓脹形過程中應力應變分佈規律，系統比較了軸向壓縮脹形和復合脹形過程中應力應變變化規律、脹形支管高度、壁厚分佈的差異。 -
If there are high temperature gradient between cool liner and hot liner, compressive plastic strain appear at that transient time, which lead to gas film wall bearing high tensile stress at high temperature. high tensile stress is one of main reasons which destroy combustor
分析表明，起動過程中由於熱傳導滯后引發的溫度梯度可以導致火焰筒氣膜唇邊在起動瞬間發生較大的壓縮塑性應變，進而使得該區域在工作時承受較高水平的拉伸應力，高的拉應力會導致火焰筒萌生裂紋。
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