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Revisiting the moment distribution method: examples of a one-step approach

机译:再谈矩量分配方法:一步法的示例

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The moment distribution method (MDM) is revisited in this paper. A one-step analytical approach is presented herein for the moment distribution analysis of indeterminate structures, which is unlike the conventional MDM that requires numerical iteration until convergence. The one-step approach inherits the beauty and simplicity of the conventional MDM, yet it can largely reduce the time and effort spent on numerical iteration. The exact distribution of moments can be easily obtained with merely one cycle of balance and carry over. The presented approach provides a simple and physically intuitive tool for practising engineers to analyse structures at the preliminary design stage or to cross-check numerical results from commercial software. To illustrate the one-step approach, three examples are given herein, namely a continuous beam, a non-sway portal frame and a simple sway frame.
机译:本文重新讨论了矩分配方法(MDM)。本文介绍了一种用于不确定结构的弯矩分布分析的单步分析方法,它不同于需要数值迭代直至收敛的常规MDM。一步式方法继承了传统MDM的优点和简单性,但可以大大减少花费在数字迭代上的时间和精力。仅需一个平衡周期并结转即可轻松获得力矩的精确分布。所提出的方法为实践工程师提供了一个简单且物理上直观的工具,使工程师可以在初步设计阶段分析结构或对商业软件的数值结果进行交叉检查。为了说明一步法,本文给出了三个示例,即连续梁,非摇摆门架和简单摇摆架。

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