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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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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
score 13.222552

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