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首页> 外文OA文献 >Non-linear finite element analysis of reinforced concrete panels and infilled frames under monotonic and cyclic loading. Structures under plane stress loading are analysed up to and beyond the peak load. Non-linear material properties including cracking, crushing and the non-linear behaviour at the interface of members are considered.
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Non-linear finite element analysis of reinforced concrete panels and infilled frames under monotonic and cyclic loading. Structures under plane stress loading are analysed up to and beyond the peak load. Non-linear material properties including cracking, crushing and the non-linear behaviour at the interface of members are considered.

机译：单调和循环荷载下钢筋混凝土面板和填充框架的非线性有限元分析。分析在平面应力载荷下达到和超过峰值载荷的结构。考虑了非线性材料特性，包括开裂，压碎和构件界面处的非线性行为。

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摘要

A non-linear finite element program to simulate the behaviour ofudinfilled frames and plane stress reinforced concrete members underudthe action of monotonic and cyclic loading has been developed. Steeludis modelled as a strain hardening plastic material, and in theudconcrete model cracking, yielding and crushing are considered. Theudseparation, sliding, and opening and closing of initial gaps at theudinterfaces between the frame and the infill panels are accounted forudby adjusting the properties of interface elements.udThe non-linear equations of equilibrium are solved using anudincremental-iterative technique performed under load or displacementudcontrol. The iterative techniques use the standard and modifiedudNewton-Raphson method or the secant Newton method. An automatic loadudincrementation scheme, line searches, and restart facilities areudincluded.udThe capabilities of the program have been examined anduddemonstrated by analysing five reinforced concrete panels, a deepudbeam, a shear wall, and eight infilled frames. The accuracy of theudanalytical results was assessed by comparing them with theudexperimental results and those obtained analytically by other workersudand shown to be good.udA study of the effects of some material and numerical parametersudon the results of analyses of reinforced concrete deep beam has beenudcarried out.udTwo techniques have been proposed and used to overcome numericaludproblems associated with local strain concentrations which occur withudthe displacement control, when path dependent incremental iterativeudprocedures are used for inelastic materials. The displacementudcontrol provided with these modifications has been shown to be moreudefficient than the load control.
机译：开发了一个非线性有限元程序，用于模拟单调和循环荷载作用下填充混凝土框架和平面应力混凝土构件的行为。将钢 udis建模为应变硬化塑料材料，并在 udconcrete模型中考虑开裂，屈服和破碎。通过调整界面元素的属性来计算框架和填充面板之间的ud接口处的初始缝隙的分离，滑动以及打开和关闭。通过使用增量变量来求解非线性平衡方程。 -在负载或位移 ud控制下执行的迭代技术。迭代技术使用标准和改进的 udNewton-Raphson方法或割线Newton方法。 ud包括自动加载 udcrementment方案，行搜索和重新启动工具。 ud通过分析五个钢筋混凝土面板，一个深 udbeam，一个剪力墙和八个填充框架，检查并演示了该程序的功能。通过将其与实验结果以及其他工作人员的分析结果进行比较，来评估分析结果的准确性，并被证明是很好的。 ud一些材料和数值参数的影响研究对分析结果的影响当对非弹性材料使用与路径有关的增量迭代/减量程序时，已经提出了两种技术，用于克服与位移控制时发生的局部应变集中相关的数值/溢价问题。与这些修改相比，提供了具有这些修改的置换/ udcontrol比负荷控制更有效。

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    Naji Jamal Hadi;

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  • 年度 1989
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  • 正文语种 en
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