首页> 外文期刊>Composites: mechanics, computations, applications >COMPARATIVE ANALYSIS OF NUMERICAL DISCRETE AND FINITE ELEMENT MODELS: THE CASE OF IN-PLANE LOADED PERIODIC BRICKWORK
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COMPARATIVE ANALYSIS OF NUMERICAL DISCRETE AND FINITE ELEMENT MODELS: THE CASE OF IN-PLANE LOADED PERIODIC BRICKWORK

机译:数值离散和有限元模型的比较分析:平面内加载周期砖的情况

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摘要

The use of refined models for investigating the in-plane behavior of periodic brickwork is an active field of research. A key aspect in modeling periodic brickwork is the identification of an appropriate scale of analysis suited for the effective characterization of the mechanical properties of structure. With this purpose, different models will be defined to simulate, with an appropriate accuracy, the behavior of masonry. Here, a comparison between a Discrete Element Method (DEM) and a combined Finite Element and Discrete Element Method (FEM/DEM) is performed. DEM and FEM models start from different assumptions and envisage different fields of application. The synergic development of the comparative analysis of two numerical models together with a reliable analysis allows developing a specific strategy suitable for investigating historical masonries (periodic brickwork) with a twofold aim: to calibrate the models at the beginning in a linear elastic field such as to propose a perspective dynamic analysis and to carry out a nonlinear analysis.
机译:使用精炼模型研究周期性砖砌的平面行为是一个活跃的研究领域。对周期性砖砌进行建模的一个关键方面是确定适合于有效表征结构力学性能的适当分析规模。为此,将定义不同的模型,以适当的精度模拟砌体的行为。在此,进行了离散元素方法(DEM)与有限元和离散元素组合方法(FEM / DEM)的比较。 DEM和FEM模型从不同的假设出发,并设想了不同的应用领域。通过两个数值模型的比较分析的协同发展以及可靠的分析,可以制定出一种适用于调查历史砌体(周期性砖砌)的特定策略,其目的是双重的:在线性弹性场中对模型进行初始校准,例如提出透视动态分析并进行非线性分析。

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