Probabilistic analysis of cylindrical shells under continuously varying load combinations

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-05-22 DOI:10.1016/j.tws.2025.113319

Niklas Reuter, Benedikt Kriegesmann

引用次数: 0

Abstract

This paper presents a probabilistic design method for cylindrical shells under combined loading without explicitly simulating each load combination. Exemplarily, the combination of axial compression and torsion is considered. The probabilistically motivated design load is a quantile of the buckling load distribution. The stochastic distribution of the buckling load (and hence any quantile) differs for each combination of axial load and torsion. The basic idea of the presented method is to consider the buckling response as a random field, where the parameter describing the load ratio is the field variable. When this random field is characterized, the stochastic distribution may be determined for any load combination without explicitly running a probabilistic analysis for this load combination. This approach is compared to a more simple and straightforward approach of interpolating stochastic moments or quantiles between different load combinations.

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连续变化荷载组合作用下圆柱壳的概率分析

本文提出了圆柱壳在组合载荷作用下的概率设计方法，无需对每种载荷组合进行显式模拟。例如，考虑轴向压缩和扭转的组合。概率激励设计荷载是屈曲荷载分布的一个分位数。屈曲载荷的随机分布（因此任何分位数）对于轴向载荷和扭转的每种组合都是不同的。该方法的基本思想是将屈曲响应视为一个随机场，其中描述载荷比的参数为场变量。当该随机场具有特征时，可以确定任意负荷组合的随机分布，而无需对该负荷组合进行显式的概率分析。该方法与在不同负载组合之间插入随机矩或分位数的更简单直接的方法进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.