西西达砌体螺旋楼梯非线性有限元分析:精细化数值实例研究

IF 1.4 4区工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY

International Journal for Multiscale Computational Engineering Pub Date : 2022-01-01 DOI:10.1615/intjmultcompeng.2022042413

A. Cutolo, F. Guarracino, C. Olivieri, Ida Mascolo

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引用次数: 0

摘要

根据海曼(Heyman, J.， the Stone Skeleton, Int.)的说法，一些现任作者基于线性拱门静力分析(LASA)的先前工作，将砌体材料建模为无张力材料。J.固体结构。，第2卷，第2期。2, pp. 249-279, 1966)和极限分析的安全定理(LA)，在此通过精确有限元(FE)模型，对那不勒斯附近Nisida砌体螺旋楼梯的案例进行了深入的数值研究。利用ANSYS参数化设计语言(APDL)建立了非线性有限元模型，得到了所涉及的所有材料和边界条件的精确表示。结果证实，LASA可以替代更复杂的数值分析，如有限元，但它不能解释坍塌或应力重新分布的主要原因，在这些类型的结构，即下垂和沉降。本文对结果进行了详细的介绍和讨论。

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NONLINEAR FE ANALYSIS OF A MASONRY SPIRAL STAIRCASE IN NISIDA: A REFINED NUMERICAL CASE STUDY

Following previous work by some of the present authors based on the linear arch static analysis (LASA), which models the masonry material as a no-tension material according to Heyman (Heyman, J., The Stone Skeleton, Int. J. Solids Struct., vol. 2, no. 2, pp. 249-279, 1966) and on the safe theorem of the limit analysis (LA), an in-depth numerical study of a case study based on a masonry spiral staircase in Nisida, near Naples, is here presented by means of an accurate finite element (FE) model. The nonlinear FE model has been obtained by the use of the ANSYS Parametric Design Language (APDL), and a precise representation of all the material involved and of the boundary conditions, has been obtained. The results confirm that LASA can be an alternative to much more complex numerical analyses, such as FE, but it cannot account for the main cause of collapse or stress redistribution in these type of structures, that is sagging and subsidences. The results are presented and discussed in some detail.

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来源期刊

International Journal for Multiscale Computational Engineering 工程技术-工程：综合

CiteScore

3.40

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： The aim of the journal is to advance the research and practice in diverse areas of Multiscale Computational Science and Engineering. The journal will publish original papers and educational articles of general value to the field that will bridge the gap between modeling, simulation and design of products based on multiscale principles. The scope of the journal includes papers concerned with bridging of physical scales, ranging from the atomic level to full scale products and problems involving multiple physical processes interacting at multiple spatial and temporal scales. The emerging areas of computational nanotechnology and computational biotechnology and computational energy sciences are of particular interest to the journal. The journal is intended to be of interest and use to researchers and practitioners in academic, governmental and industrial communities.