Riks Method
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Riks Method的實例教程
關于弧長法的原理，推薦參考《非線性分析弧長法的讀書報告》、陸新征老師學生時代的作業：《基于預處理技術和弧長法的非線性方程通用求解子程序總結報告 》，以及Yusd的博文《弧長法（Riks Method）的基本原理》。喜歡編程的話，還可以參考他的另一篇文章《弧長法(Riks method)通用求解程序》。英文資料可閱讀蘇黎世聯邦理工學院結構工程研究所Prof. Dr. Eleni Chatzi的講稿：《The Finite Element Method for the Analysis of Non-Linear and Dynamic Systems》
在這里只強調一下弧長法的一個獨特的優勢：
見下圖，當微小荷載增量可以引起顯著的位移突躍，則成為荷載控制的急速通過(Snap though)；當微小位移增量可以產生顯著的荷載突躍，則成為位移控制的急速返回(snap back)——這種復雜的加載路徑，單純荷載或位移控制已經難以奏效，而弧長法則可輕松處理此類問題。
轉自公眾號——ANSYS學習與應用
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展開 Finite Element Analysis of Steel and Steel-Concrete
Composite Bridges 469
5.1 General remarks 469
5.2 Choice of finite element types for steel and steel-concrete composite
bridges 470
5.3 Choice of finite element mesh for the bridges and bridge components 496
5.4 Material modeling of the bridge components 501
5.5 Linear and nonlinear analyses of the bridges and bridge components 516
5.6 Riks method 527
5.7 Modeling of initial imperfections and residual stresses 540
5.8 Modeling of shear connection for steel-concrete composite bridges 543
5.9 Application of loads and boundary conditions on the bridges 551
References 553
6.
展開 The modified Riks method [9] was employed to solve the geometrically and materially non-linear stub column models, which enabled the unloading behaviour to be traced. The numerical failure mode of EHS 150 × 75 × 4-SC2 is illustrated in Fig. 16 and compared with the corresponding deformed test specimen. Results of the numerical simulations are tabulated in Table 4, in which, the ratios between the FE ultimate load and the experimental ultimate load are shown and compared for different imperfection levels.</p><p>Replication of test results has been found to be satisfactory with the numerical models able to successfully capture the observed stiffness, ultimate load, general load–end shortening response and failure patterns.
展開 
Riks Method的相關專題、標簽、搜索
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Riks Method的最新內容
The modified Riks method [9] was employed to solve the geometrically and materially non-linear stub column models, which enabled the unloading behaviour to be traced.
關于弧長法的原理，推薦參考《非線性分析弧長法的讀書報告》、陸新征老師學生時代的作業：《基于預處理技術和弧長法的非線性方程通用求解子程序總結報告 》，以及Yusd的博文《弧長法（Riks Method）的基本原理》。喜歡編程的話，還可以參考他的另一篇文章《弧長法(Riks method)通用求解程序》。英文資料可閱讀蘇黎世聯邦理工學院結構工程研究所Prof. Dr.
method 527
5.7 Modeling of initial imperfections and residual stresses 540
5.8 Modeling of shear connection for steel-concrete composite bridges 543
5.9 Application of loads and boundary conditions
