Improved two-dimensional cracked finite element for crack fault diagnosis
Journal Title: Computer Assisted Methods in Engineering and Science - Year 2012, Vol 19, Issue 3
Abstract
In this paper the two-dimensional finite element with an embedded edge crack proposed by Potirniche et al. (2008) is improved further for crack depth ratios ranging up to 0.9 and for predicting the natural frequency of a cracked beam more accurately. The element is implemented in the commercial finite element code ABAQUS as user element subroutine. The accuracy of the proposed improved cracked element is verified by comparing the predicted, first natural frequency with available experimental data. Subsequently, a methodology to detect the crack's location and size in conjunction with the proposed improved cracked element is also presented.
Authors and Affiliations
Aysha Kalanad, B. N. Rao
Numerical estimation of internal stress relieving in destructive test. (Received in the final form January 18, 2010)
The paper deals with the analysis of residual stress fields in the riveted joint and the estimation of the internal stress magnitude releasing by partial and complete removing of the rivet material. Stress relieving caus...
Root finding method for problems of elastodynamics. (Received in the final form February 24, 2010)
This paper presents a simple and efficient method for finding complex roots of dispersion equations occurring in many problems of elastodynamics. The method is characterized by high accuracy in root finding and absence o...
Coupling of CFD and lumped parameter codes for thermal-hydraulic simulations of reactor containment
The work deals with thermal-hydraulic analyses of a pressurized water reactor containment response to accidents caused by a rupture of primary circuit. The in-house system computer code HEPCAL-AD and CFD ANSYS Fluent hav...
Hybrid Monte Carlo method in the reliability analysis of structures
The paper develops the idea of [8], i.e., the application of Artificial Neural Networks (ANNs) in probabilistic reliability analysis of structures achieved by means of Monte Carlo (MC) simulation. In this method, a feed-...
Numerical analysis of radiant warmer
The main objective of this paper is to recognise the heat transfer phenomena between an infant placed in a radiant warmer and the surrounding environment. The influence of the parameters in the computational time during...