scholarly journals Simple Computational Methods in Predicting Limit Load of High-Strength Cold-Formed Sections due to Local Buckling: A Case Study

2018 ◽  
Vol 25 (4) ◽  
pp. 73-82
Author(s):  
Paweł Bielski ◽  
Leszek Samson ◽  
Oskar Wysocki ◽  
Jacek Czyżewicz
Keyword(s):  
Material Properties ◽  
Local Buckling ◽  
High Strength ◽  
Limit Load ◽  
Structural Members ◽  
Geometrical Imperfections ◽  
Manual Methods ◽  
Buckling Failure ◽  
Insight Into

Abstract Cold-formed thin-walled sections are prone to local buckling caused by residual stresses, geometrical imperfections and inconsistency of material properties. We present a real case of buckling failure and conduct a numerical and experimental study aimed to identify methods capable of predicting such failures. It is important because designers of structures are getting more FEA-oriented and tend to avoid lengthy procedures of cold-formed structures design. Currently adopted methods are complicated and require patience and caution from a designer which is reasonable in case of the most important structural members but not necessarily so in ordinary design. Since it is important, we offer an insight into several FEA and manual methods which were sufficient to predict the failure while remaining fairly simple. Using a non-uniform partial safety factor was still necessary. We hope that this paper will be of interest for people performing a lot of routine analyses and worrying about reliability of their computations.

scholarly journals Structural Assessment of the Hull Response of an FPSO Unit to Dropped Objects: A Case Study

2019 ◽  
Vol 26 (4) ◽  
pp. 39-46 ◽  
Author(s):  
Ozgur Ozguc
Keyword(s):  
Structural Damage ◽  
Local Buckling ◽  
Structural Response ◽  
Offshore Structures ◽  
Mechanical Equipment ◽  
Structural Members ◽  
Impact Area ◽  
Explicit Dynamic ◽  
The Impact

Abstract Offshore structures are exposed to the risk of damage caused by various types of extreme and accidental events, such as fire, explosion, collision, and dropped objects. These events cause structural damage in the impact area, including yielding of materials, local buckling, and in some cases local failure and penetration. The structural response of an FPSO hull subjected to events involving dropped objects is investigated in this study, and non-linear finite element analyses are carried out using an explicit dynamic code written LS-DYNA software. The scenarios involving dropped objects are based on the impact from the fall of a container and rigid mechanical equipment. Impact analyses of the dropped objects demonstrated that even though some structural members were permanently deformed by drop loads, no failure took place in accordance with the plastic strain criteria, as per NORSOK standards. The findings and insights derived from the present study may be informative in the safe design of floating offshore structures.

Local buckling failure analysis of high strength pipelines containing a plain dent under bending moment

2020 ◽  
Vol 77 ◽  
pp. 103266 ◽  
Author(s):  
Yi Shuai ◽  
Dao-Chuan Zhou ◽  
Xin-Hua Wang ◽  
Heng-Gang Yin ◽  
Shidong Zhu ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Local Buckling ◽  
Bending Moment ◽  
High Strength ◽  
Buckling Failure

scholarly journals Local buckling failure analysis of high-strength pipelines

2017 ◽  
Vol 14 (3) ◽  
pp. 549-559
Author(s):  
Yan Li ◽  
Jian Shuai ◽  
Zhong-Li Jin ◽  
Ya-Tong Zhao ◽  
Kui Xu
Keyword(s):  
Failure Analysis ◽  
Local Buckling ◽  
High Strength ◽  
Buckling Failure

scholarly journals Material properties and compressive local buckling response of high strength steel square and rectangular hollow sections

2017 ◽  
Vol 130 ◽  
pp. 297-315 ◽  
Author(s):  
J. Wang ◽  
S. Afshan ◽  
N. Schillo ◽  
M. Theofanous ◽  
M. Feldmann ◽  
...  
Keyword(s):  
Material Properties ◽  
High Strength Steel ◽  
Local Buckling ◽  
High Strength

Margins and Modernity: A Geocritical Approach to Anna Seward's Llangollen Vale

Romanticism ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 69-80
Author(s):  
Ruth Knezevich
Keyword(s):  
Analytic Approach ◽  
Romantic Era ◽  
Insight Into

The genre of annotated verse represents an under-explored form of transporting romanticism. In annotated, locodescriptive poems like those in Anna Seward's Llangollen Vale, readers are invited to read not only the spatiality of the landscapes depicted in the verse but also the landscape of the page itself. Seward's poems, with their focus on understanding geographical, political, and historical spaces both real and imaginary, provide geocritical insight into poetic productions of the early Romantic era. Likewise, geocriticism offers a fresh and useful – even necessary – analytic approach to such poems. I adopt Anna Seward as a case study in annotated verse and argue that attending to the materiality and paratextuality of her work allows us to access the complexities of her poetry and prose as well as her position within the wider framework of transporting Romanticism.

Transformative Encounters and Uncanny Intimacies: Biotechnology and Contemporary Art – A Practitioner's Approach and Perspective

Somatechnics ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 263-283 ◽  
Author(s):  
Svenja J. Kratz
Keyword(s):  
Tissue Culture ◽  
Human Skin ◽  
Contemporary Art ◽  
Skin Equivalent ◽  
Biomedical Innovation ◽  
Equivalent Models ◽  
Science Projects ◽  
Insight Into ◽  
Human Skin Equivalent

Abstract: Presented from an ArtScience practitioner's perspective, this paper provides an overview of Svenja Kratz's experience working as an artist within the area of cell and tissue culture at QUT's Institute of Health and Biomedical Innovation (IHBI). Using The Absence of Alice, a multi-medium exhibition based on the experience of culturing cells, as a case study, the paper gives insight into the artist's approach to working across art and science and how ideas, processes, and languages from each discipline can intermesh and extend the possibilities of each system. The paper also provides an overview of her most recent artwork, The Human Skin Equivalent/Experience Project, which involves the creation of personal jewellery items incorporating human skin equivalent models grown from the artist's skin and participant cells. Referencing this project, and other contemporary bioart works, the value of ArtScience is discussed, focusing in particular on the way in which cross-art-science projects enable an alternative voice to enter into scientific dialogues and have the potential to yield outcomes valuable to both disciplines.

A Novel Integrated Reliability Test System for BEOL TDDB Study

2012 ◽  
Author(s):  
Jifeng Chen ◽  
Peilin Song ◽  
Thomas M. Shaw ◽  
Franco Stellari ◽  
Lynne Gignac ◽  
...  
Keyword(s):  
Preliminary Analysis ◽  
Dielectric Breakdown ◽  
Test System ◽  
Accurate Information ◽  
Reliability Test ◽  
Electrical Measurements ◽  
Time Dependent Dielectric Breakdown ◽  
Microscopy Images ◽  
Insight Into

Abstract In this paper, we propose a new methodology and test system to enable the early detection and precise localization of Time-Dependent-Dielectric-Breakdown (TDDB) occurrence in Back-End-of-Line (BEOL) interconnection. The methodology is implemented as a novel Integrated Reliability Test System (IRTS). In particular, through our methodology and test system, we can easily synchronize electrical measurements and emission microscopy images to gather more accurate information and thereby gain insight into the nature of the defects and their relationship to chip manufacturing steps and materials, so that we can ultimately better engineer these steps for higher reliable systems. The details of our IRTS will be presented along with a case study and preliminary analysis results.

Radical Subject Acceleration for Gifted Students: One School's Response

2019 ◽  
pp. 29-46
Author(s):  
Kaye Chalwell ◽  
Therese Cumming
Keyword(s):  
Gifted And Talented ◽  
Gifted Students ◽  
Subject Area ◽  
Lessons Learned ◽  
Gifted Student ◽  
Learning Needs ◽  
Mathematically Gifted ◽  
Support Students ◽  
Insight Into

Radical subject acceleration, or moving students through a subject area faster than is typical, including skipping grades, is a widely accepted approach to support students who are gifted and talented. This is done in order to match the student’s cognitive level and learning needs. This case study explored radical subject acceleration for gifted students by focusing on one school’s response to the learning needs of a ten year old mathematically gifted student. It provides insight into the challenges, accommodations and approach to radical subject acceleration in an Australian school. It explored the processes and decisions made to ensure that a gifted student’s learning needs were met and identified salient issues for radical subject acceleration. Lessons learned from this case study may be helpful for schools considering radical acceleration.

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