Uncertainty analysis of reliability prediction for cracked structure

Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia.

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Bibliographic Details
Main Authors:	Mohd Akramin, Mohd Romlay, Mohamad Mazwan, Mahat, Juliawati, Alias, A.H. Ahmad
Format:	Working Paper
Language:	English
Published:	Universiti Malaysia Perlis 2009
Subjects:	Fracture mechanics Finite element method Strains and stresses Materials > Cracking Structural reliability Structural design Materials > Testing Reliability (Engineering)
Online Access:	http://dspace.unimap.edu.my/xmlui/handle/123456789/7211
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Institution:	Universiti Malaysia Perlis
Language:	English

id	my.unimap-7211
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spelling	my.unimap-72112009-11-17T06:18:43Z Uncertainty analysis of reliability prediction for cracked structure Mohd Akramin, Mohd Romlay Mohamad Mazwan, Mahat Juliawati, Alias A.H. Ahmad Fracture mechanics Finite element method Strains and stresses Materials -- Cracking Structural reliability Structural design Materials -- Testing Reliability (Engineering) Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia. The uncertainties inherent in the loading and the properties of mechanical systems necessitate a probabilistic approach as a realistic and rational platform for analysis. Therefore, this paper presents a probabilistic approach in order to model the uncertainties in fracture mechanics analysis. The main focus is on uncertainties aspect which relates the nature of crack in materials. The objective of this work is to calculate the rigidity of cracked structures based on failure probability by using simulation technique. The methodology consists of cracked structures modelling, finite element calculation, generation of adaptive mesh, sampling of cracked structure including uncertainties factors and probabilistic analysis using Monte Carlo method. Probabilistic analysis represents the priority of proceeding either suitable to repair the structures or it can be justified that the structures are still in safe condition. Therefore, the hybrid finite element and probabilistic analysis represents the failure probability of the structures by operating the sampling of cracked structures process. The uncertainty in the crack size can have a significant effect on the probability of failure, particularly for the crack size with large coefficient of variation. The probability of failure caused by uncertainties relates to loads and material properties of the structure are estimated using Monte Carlo simulation technique. Numerical examples are presented to show that probabilistic analysis based on Monte Carlo simulation provides accurate estimates of failure probability. Verification of the predicted failure probability is validated with analytical solutions and relevant numerical results obtained from other previous works. The comparison show that the combination between finite element analysis and probabilistic analysis based on Monte Carlo simulation provides a simple and realistic of quantify the failure probability. 2009-11-06T09:03:15Z 2009-11-06T09:03:15Z 2009-10-11 Working Paper p.7E 1 - 7E 5 978-967-5415-07-4 http://hdl.handle.net/123456789/7211 en Proceedings of International Conference on Applications and Design in Mechanical Engineering 2009 (iCADME 2009) Universiti Malaysia Perlis
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Fracture mechanics Finite element method Strains and stresses Materials -- Cracking Structural reliability Structural design Materials -- Testing Reliability (Engineering)
spellingShingle	Fracture mechanics Finite element method Strains and stresses Materials -- Cracking Structural reliability Structural design Materials -- Testing Reliability (Engineering) Mohd Akramin, Mohd Romlay Mohamad Mazwan, Mahat Juliawati, Alias A.H. Ahmad Uncertainty analysis of reliability prediction for cracked structure
description	Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia.
format	Working Paper
author	Mohd Akramin, Mohd Romlay Mohamad Mazwan, Mahat Juliawati, Alias A.H. Ahmad
author_facet	Mohd Akramin, Mohd Romlay Mohamad Mazwan, Mahat Juliawati, Alias A.H. Ahmad
author_sort	Mohd Akramin, Mohd Romlay
title	Uncertainty analysis of reliability prediction for cracked structure
title_short	Uncertainty analysis of reliability prediction for cracked structure
title_full	Uncertainty analysis of reliability prediction for cracked structure
title_fullStr	Uncertainty analysis of reliability prediction for cracked structure
title_full_unstemmed	Uncertainty analysis of reliability prediction for cracked structure
title_sort	uncertainty analysis of reliability prediction for cracked structure
publisher	Universiti Malaysia Perlis
publishDate	2009
url	http://dspace.unimap.edu.my/xmlui/handle/123456789/7211
_version_	1643788759556161536

Uncertainty analysis of reliability prediction for cracked structure

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