k g model 中文意思是什麼
k g model
解釋
k-g模型-
In chapter 3, by minimizing a quadratic model restricting next search direction to a subset of span { - g _ ( k ), d _ ( k - 1 ) }, we propose other formula of parameter ~ ( * ) k convergences of the new method and its hybrid formula are proved under monotone line search. their numerical results show that they are efficient
在第三章中,通過最小化一個限制下次搜索方向在span { - g _ k , d _ ( k - 1 ) }子集上的二次模型,我們提出了_ k ~ *取新形式或其雜交形式的共軛梯度法是有效的。 -
Using 3d 20 - node iso - parameter, 3d 12 - node infinite element and 3d 16 - node interface element, a coupled numerical approach for pile group - soil system under lateral loads is set up. a corresponding three - dimensional, nonlinear and elastic - plastic program ( epagpll ), include two materials and four nonlinear constitutive relations, is worked out by fortran 90 computer language. in the analysis the nonlinear e - model, k - g model and cambridge model with two yield surfaces are employed in the analysis of near - field soil, and the nonlinear analysis method is used in the piles - soil interface and distant - field soil
本人用有限元進行樁體和近域土的分析,對遠域土體採用無限單元,在樁土之間採用接觸面單元,建立了平面8節點環狀單元6節點無限元6節點接觸面單元相耦合的數值計算模型;針對豎直受力樁的流變分析,本人用內嵌于autocad的vba語言編制了前處理程序,可以快速形成包括網格、節點編號、單元編號在內的數據文件,供計算程序使用;同時在前人關于流變問題研究的基礎上,引進土體非線性流變本構模型,利用有限元、無限元、接觸面單元相結合的方法,用c + +語言編制了相應的計算程序。 -
All models can predict the attached and little separation flows. for the high angle - of - attack separated flows with distinct history effects, the j - k and k - g models perform better than b - l model. for multi - body and multi - block mesh system, model k - g, which does not need the distance normal - to - wall, performs much better adaptability for complex geometries
所有模型都可以很好地模擬附體及和小分離流動;對于具有明顯上游歷程效應的大迎角分離流動, j一k和k - s模型的模擬能力較強;對于多體干擾和多塊網格系統, k - s模型無需計算網格單元至物面的垂直距離,具有較強的適應能力,且計算效果最佳。
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