yield criteria 中文意思是什麼
yield criteria
解釋
屈服準則-
This thesis briefly analyzes some yield criteria and instability criteria to the sheet metal forming first. then according to the transformation rule from ultimate strain to ultimate stress, it establishes the mathematical calculation models of the forming limit stress diagram for the software development according to hill48 、 hill79 and hosford yield criterion irrespectively
本文首先分析了板料成形的屈服準則和失穩準則，然後根據極限應變到極限應力的轉換關系，分別採用hill48屈服準則、 hill79屈服準則和hosford屈服準則，建立了用於軟體開發的成形極限應力圖的數學計算模型。 -
The programme can solve two - dimensional stresses, strains and axial symmetry problems with different yield criteria. a satisfying solution has been put forward to the contact boundary between reinforcements and soil. the special problem of two contact plane elements at the joint between plate and strip has been solved
該程序能同時考慮平面應力、平面應變和軸對稱問題，並能運用不同的屈服準則，使其更具有通用性和適用性，成功地解決了筋材與土介質界面的接觸問題，較好地解決了墻面板與筋帶連接處出現兩個接觸面單元的特殊問題。 -
Using the complex potential method in the plane theory of elasticity of an anisotropic body, a series solution to the stress field of a finite plate containing multiple cracks subjected to arbitrary loads is obtained by means of the faber series expansion, and the stress intensity factors at the crack tips are calculated based on the theories of fracture mechanics. equivalence yield stress is introduced in order to consider the effects of the plastic zones, with which the strip yield criteria is developed in the article so that the effects of structural size and the crack interactions on the stress distribution can be considered accurately. the effects of plate size, crack size and crack distributions on the stress intensity factors as well as the residual strength of the plate are studied detailedly
採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，得到了含多裂紋有限大板在任意載荷作用下應力場的級數解，並應用斷裂力學方法確定裂紋尖端的應力強度因子；引入當量屈服應力考慮裂尖塑性區的影響，提出基於帶屈服準則的剩餘強度分析模型，能夠充分考慮結構尺寸和裂紋之間相互作用對應力場的影響；通過數值計算詳細討論了結構尺寸和裂紋之間位置關系對應力強度因子和結構剩餘強度的影響規律，得到了一系列對工程應用具有實用價值的結論。 -
The effect of different yield criteria on the finite element simulation of deep drawing formability for different thickness tailor welded blanks
屈服準則對差厚鋁合金拼焊板拉深成形數值模擬的影響 -
In the model, johnson - cook strength is combined with gurson - tvergaard - needleman yield criteria, and random distribution of microvoids is used. results show that quasi - periodic axial fracture will appear, which obstructs the mirror current of the armature
在給定微孔洞的初始擾動時，計算結果解釋了鋁電樞表面將要形成的不穩定性，它導致了電樞外表面出現周期性的軸向裂紋，阻礙了鏡像電流，使fcg損耗增加。 -
This paper is to develop a model on synthesis reaction of methanol using material and thermodynamics balance, and to utilize matlab to solve multielement nonlinear equation set on proposed model, so calculate balance composition of reactions, parameters of various materials, various process criteria such as methanol output and consumption according to given operation conditions, thereby can quantitatively analyze the effect of various operation conditions on process criteria, so that direct the actual chemical operation, thus assist to determine the optimal operating conditions of synthesis, consequently could forecast various criteria such as yield and consumption according to given conditions of feeds
摘要通過物料平衡與勢力學平衡對甲醇合成反應過程進行建模，並採用matlab工具對所建模型進行多元非線性方程組的求解，以根據給定操作條件來計算反應平衡組成、各股物料參數、各主要工藝指標如甲醇?量、消耗等，並繼而定量分析各種操作條件對工藝指標的影響，以便指導實際化工生?操作，從而幫助確定最佳的合成操作工況條件，並可以根據給定的原料條件等參數預測合成?量與消耗等指標。 -
The stresses and strain are analyzed by marc software ; the safety factors evaluated based on displacement, yield region ( connected ) and total energy criteria
應力和應變由marc軟體分析計算得到；安全系數由位移變化、屈服區連通率和總應變能變化來評價。 -
Water saving and high yield irrigation models of rice and soil moisture potential control criteria
水稻節水高產灌溉模式及土壤水分能量調控標準研究 -
The thesis analyzes the inner cracking reason for the hot rolled sheet based on texture orientation transformation, simulates the forming process of drawing sheet by the barlat - lian anisotropic yield criteria, and discusses the cracking mechanism in the deforming and stress distribution
本文由該材料的微觀織構取向變化分析造成板開裂的內在原因，根據能夠準確描述塑性各向異性的材料模型，模擬了沖壓板開裂圓件成型過程，由其變形分佈和應力分佈探討開裂機理。
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