Paper title: A Rapid Method for Reliability Analysis of Composite Tophat Stiffened Structures Using a First Principles Method and Design Rules
A J Sobey, J I R Blake and R A Shenoi, University of Southampton, UK
Composite materials are increasingly being used within engineering, especially in low weight applications. A significant drawback that these materials exhibit is their variability. There is a growing trend towards stochastic analysis of marine structures and this is even more important for scenarios that have a high variability. To implement these new techniques it is important to be able to, rapidly and accurately, determine reliability during the design phase. Therefore, a reliability analysis, utilising a rapid implementation, has been performed on plates that have been designed using two different sets of design rules and a first principles method. The results show that whilst, under the limits investigated, the reliability of the design rules are slightly safer than those found using first principles; the sensitivity analysis shows that each of the design rules generates a different reaction from each variable, encouraging different types of structures through their idiosyncrasies. Furthermore the method shown allows a rapid analysis to be performed on complex composite structures in a relatively short time frame using either first principles methods or design rules.
Transactions RINA, Vol 156, Part A1, International Journal Maritime Engineering, Jan-Mar 2014
DOI No: 10.3940/rina.ijme.2014.a1.278
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