Application of the homotopy analysis method to determine the analytical limit state functions and reliability index for large deflection of a cantilever beam subjected to static co-planar loading


Kimiaeifar, A., Lund, E., Thomsen, O.T. and Sørensen, J.D. (2011) Application of the homotopy analysis method to determine the analytical limit state functions and reliability index for large deflection of a cantilever beam subjected to static co-planar loading. Computers & Mathematics with Applications, 62, (12), 4646-4655. (doi:10.1016/j.camwa.2011.10.050).

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Description/Abstract

In this paper, the Homotopy Analysis Method (HAM) is applied to obtain the limit state function, probability of failure and reliability index based on all stochastic and deterministic variables for a cantilever beam subjected to co-planar loading for the first time. First, it is established that a few iterations in the series expansion are sufficient to obtain highly accurate results and a substantial convergence region. After showing the effectiveness of HAM, two limit state functions are introduced as the maximum deflection in the y direction and maximum allowable stress, respectively. Then the first order reliability method (FORM) is employed to obtain reliability index, and omission sensitivity factor analytically. It is shown that HAM is a promising tool to obtain limit state function, probability of failure and reliability index analytically for nonlinear problems. Finally, a sensitivity analysis is done to show that which parameters could be considered deterministic or stochastic variables.

Item Type: Article
ISSNs: 0898-1221 (print)
1873-7668 (electronic)
Keywords: reliability index, omission sensitivity factor, failure function, homotopy analysis method, geometrical nonlinearity
Subjects: Q Science > QA Mathematics
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering and the Environment > Engineering Sciences > Engineering Materials Surface Engineering
ePrint ID: 339108
Date Deposited: 23 May 2012 12:08
Last Modified: 27 Mar 2014 20:22
URI: http://eprints.soton.ac.uk/id/eprint/339108

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