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Probabilistic and deterministic lower-bound design benchmarks for cylindrical shells under axial compression

Wagner, Ronald and Hühne, Christian (2019) Probabilistic and deterministic lower-bound design benchmarks for cylindrical shells under axial compression. Thin-Walled Structures. Elsevier. ISSN 0263-8231

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Abstract

This article contains examples to demonstrate the use of different design concepts for cylindrical shells under axial compression. The examples are based on shells which were manufactured according to electroplating, machining, welding (isotropic cylinders) and prepreg hand layup on a mandrel (composite cylinders). Three of the four shell series are characterized by pure elastic buckling and one shell series buckled in the elastic-plastic region. All relevant data for the numerical analysis are described in the article and summarized in the Elsevier repository of this article (geometry, material, measured imperfection data and Python-ABAQUS scripts). The design concepts are based on the geometric imperfection signatures, probabilistic and deterministic lowerbound methods. The design concepts are representative for the development of design approaches for imperfection sensitive shells from the early 1980 to the late 2010 and are validated with experimental data. Recently developed design lower-bound curves for axially loaded cylinders are presented and compared with currently used design criteria like the Eurocode EN 1993-1-6 and the NASA SP-8007. The results of this article show that the design of imperfection sensitive cylinders has been significantly improved in the last 30 years.

Item URL in elib:https://elib.dlr.de/130345/
Document Type:Article
Title:Probabilistic and deterministic lower-bound design benchmarks for cylindrical shells under axial compression
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wagner, RonaldRonald.Wagner (at) tu-braunschweig.dehttps://orcid.org/0000-0003-2749-1455
Hühne, ChristianDLR – Institut für Faserverbundleichtbau und Adaptronik, Braunschweighttps://orcid.org/0000-0002-2218-1223
Date:22 October 2019
Journal or Publication Title:Thin-Walled Structures
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Elsevier
ISSN:0263-8231
Status:Published
Keywords:Shell buckling Probabilistic design Knockdown factor Geometric imperfection Reduced stiffness analysis
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Leitprojekt - Forschungsverbund Oberstufe
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kafka, Elena
Deposited On:19 Nov 2019 05:23
Last Modified:20 Feb 2020 07:34

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