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 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research 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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.