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On the post-processing of data obtained from cracked components

On the post-processing of data obtained from cracked components
On the post-processing of data obtained from cracked components
The use of a simple singular value decomposition (SVD) technique to post-process far-field data from cracked components is discussed. The technique employs the series expansion for stress or displacements ahead of the crack tip, which is available for a wide range of configurations. The use of higher-order terms, necessary for the post-processing, is beneficial for two reasons: (a) it permits the abstraction of the maximum usable amount of information; (b) it gives a better understanding of the fracture mechanics, especially regarding crack tip plasticity and dynamic propagation. Several numerical cases are examined and a comparison is made with analytical results, permitting an evaluation to be made of the pure numerical error in the post-processing.
post-processing, cracked, components, simple, singular, value, decomposition, technique, far-field, data
0309-3247
67-71
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Demelio, G.
cb38aabe-9837-4ab2-aa87-60028fd7b82c
Pappalettere, C.
f66a5900-44ec-435f-b05e-f0bd22a4519f
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Demelio, G.
cb38aabe-9837-4ab2-aa87-60028fd7b82c
Pappalettere, C.
f66a5900-44ec-435f-b05e-f0bd22a4519f

Ciavarella, M., Demelio, G. and Pappalettere, C. (1998) On the post-processing of data obtained from cracked components. The Journal of Strain Analysis for Engineering Design, 33 (1), 67-71.

Record type: Article

Abstract

The use of a simple singular value decomposition (SVD) technique to post-process far-field data from cracked components is discussed. The technique employs the series expansion for stress or displacements ahead of the crack tip, which is available for a wide range of configurations. The use of higher-order terms, necessary for the post-processing, is beneficial for two reasons: (a) it permits the abstraction of the maximum usable amount of information; (b) it gives a better understanding of the fracture mechanics, especially regarding crack tip plasticity and dynamic propagation. Several numerical cases are examined and a comparison is made with analytical results, permitting an evaluation to be made of the pure numerical error in the post-processing.

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More information

Published date: 1998
Keywords: post-processing, cracked, components, simple, singular, value, decomposition, technique, far-field, data

Identifiers

Local EPrints ID: 23257
URI: http://eprints.soton.ac.uk/id/eprint/23257
ISSN: 0309-3247
PURE UUID: 0b18697f-4646-4fc5-a395-42a08b4838a6

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Date deposited: 01 Feb 2007
Last modified: 19 Jul 2019 19:10

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Contributors

Author: M. Ciavarella
Author: G. Demelio
Author: C. Pappalettere

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